Basic PDF file structure parsing

.gitignore

@@ -0,0 +1,27 @@
+#ignorar miniaturas creadas por windows
+Thumbs.db
+#Ignorar archivos construidos por Visual Studio
+*.obj
+*.exe
+*.pdb
+*.user
+*.aps
+*.pch
+*.vspscc
+*_i.c
+*_p.c
+*.ncb
+*.suo
+*.tlb
+*.tlh
+*.bak
+*.cache
+*.ilk
+*.log
+[Bb]in
+[Dd]ebug*/
+*.lib
+*.sbr
+obj/
+[Rr]elease*/
+_ReSharper*/

LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-2015 Valeriano Alfonso Rodriguez
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

VAR.PdfTools.Workbench/App.config

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <configSections>
+        <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
+            <section name="VAR.PdfTools.Workbench.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
+        </sectionGroup>
+    </configSections>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
+    </startup>
+    <userSettings>
+        <VAR.PdfTools.Workbench.Properties.Settings>
+            <setting name="LastPdfPath" serializeAs="String">
+                <value />
+            </setting>
+        </VAR.PdfTools.Workbench.Properties.Settings>
+    </userSettings>
+</configuration>

VAR.PdfTools.Workbench/FrmPdfInfo.Designer.cs

@@ -0,0 +1,134 @@
+namespace VAR.PdfTools.Workbench
+{
+    partial class FrmPdfInfo
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.lblOutputs = new System.Windows.Forms.Label();
+            this.lblInputs = new System.Windows.Forms.Label();
+            this.btnBrowse = new System.Windows.Forms.Button();
+            this.txtPdfPath = new System.Windows.Forms.TextBox();
+            this.txtOutput = new System.Windows.Forms.TextBox();
+            this.btnProcess = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // lblOutputs
+            // 
+            this.lblOutputs.AutoSize = true;
+            this.lblOutputs.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+            this.lblOutputs.Location = new System.Drawing.Point(12, 48);
+            this.lblOutputs.Name = "lblOutputs";
+            this.lblOutputs.Size = new System.Drawing.Size(51, 13);
+            this.lblOutputs.TabIndex = 11;
+            this.lblOutputs.Text = "Outputs";
+            // 
+            // lblInputs
+            // 
+            this.lblInputs.AutoSize = true;
+            this.lblInputs.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+            this.lblInputs.Location = new System.Drawing.Point(12, 9);
+            this.lblInputs.Name = "lblInputs";
+            this.lblInputs.Size = new System.Drawing.Size(42, 13);
+            this.lblInputs.TabIndex = 10;
+            this.lblInputs.Text = "Inputs";
+            // 
+            // btnBrowse
+            // 
+            this.btnBrowse.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
+            this.btnBrowse.Location = new System.Drawing.Point(323, 22);
+            this.btnBrowse.Name = "btnBrowse";
+            this.btnBrowse.Size = new System.Drawing.Size(75, 23);
+            this.btnBrowse.TabIndex = 9;
+            this.btnBrowse.Text = "Browse";
+            this.btnBrowse.UseVisualStyleBackColor = true;
+            this.btnBrowse.Click += new System.EventHandler(this.btnBrowse_Click);
+            // 
+            // txtPdfPath
+            // 
+            this.txtPdfPath.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.txtPdfPath.Location = new System.Drawing.Point(15, 25);
+            this.txtPdfPath.Name = "txtPdfPath";
+            this.txtPdfPath.Size = new System.Drawing.Size(302, 20);
+            this.txtPdfPath.TabIndex = 8;
+            // 
+            // txtOutput
+            // 
+            this.txtOutput.AcceptsReturn = true;
+            this.txtOutput.AcceptsTab = true;
+            this.txtOutput.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
+            | System.Windows.Forms.AnchorStyles.Left) 
+            | System.Windows.Forms.AnchorStyles.Right)));
+            this.txtOutput.Font = new System.Drawing.Font("Consolas", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+            this.txtOutput.Location = new System.Drawing.Point(15, 64);
+            this.txtOutput.Multiline = true;
+            this.txtOutput.Name = "txtOutput";
+            this.txtOutput.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
+            this.txtOutput.Size = new System.Drawing.Size(464, 355);
+            this.txtOutput.TabIndex = 7;
+            // 
+            // btnProcess
+            // 
+            this.btnProcess.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
+            this.btnProcess.Location = new System.Drawing.Point(404, 22);
+            this.btnProcess.Name = "btnProcess";
+            this.btnProcess.Size = new System.Drawing.Size(75, 23);
+            this.btnProcess.TabIndex = 6;
+            this.btnProcess.Text = "Process";
+            this.btnProcess.UseVisualStyleBackColor = true;
+            this.btnProcess.Click += new System.EventHandler(this.btnProcess_Click);
+            // 
+            // FrmPdfInfo
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(491, 431);
+            this.Controls.Add(this.lblOutputs);
+            this.Controls.Add(this.lblInputs);
+            this.Controls.Add(this.btnBrowse);
+            this.Controls.Add(this.txtPdfPath);
+            this.Controls.Add(this.txtOutput);
+            this.Controls.Add(this.btnProcess);
+            this.Name = "FrmPdfInfo";
+            this.Text = "PdfInfo";
+            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.FrmPdfInfo_FormClosing);
+            this.Load += new System.EventHandler(this.FrmPdfInfo_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.Label lblOutputs;
+        private System.Windows.Forms.Label lblInputs;
+        private System.Windows.Forms.Button btnBrowse;
+        private System.Windows.Forms.TextBox txtPdfPath;
+        private System.Windows.Forms.TextBox txtOutput;
+        private System.Windows.Forms.Button btnProcess;
+    }
+}

VAR.PdfTools.Workbench/FrmPdfInfo.cs

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+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace VAR.PdfTools.Workbench
+{
+    public partial class FrmPdfInfo : Form
+    {
+        public FrmPdfInfo()
+        {
+            InitializeComponent();
+        }
+
+        private void FrmPdfInfo_Load(object sender, EventArgs e)
+        {
+            txtPdfPath.Text = Properties.Settings.Default.LastPdfPath;
+        }
+
+        private void FrmPdfInfo_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            Properties.Settings.Default.LastPdfPath = txtPdfPath.Text;
+            Properties.Settings.Default.Save();
+        }
+
+        private void btnBrowse_Click(object sender, EventArgs e)
+        {
+            var dlgFile = new OpenFileDialog();
+            DialogResult result = dlgFile.ShowDialog();
+            if (result == DialogResult.OK)
+            {
+                txtPdfPath.Text = dlgFile.FileName;
+            }
+        }
+
+        private void btnProcess_Click(object sender, EventArgs e)
+        {
+            if (System.IO.File.Exists(txtPdfPath.Text) == false)
+            {
+                MessageBox.Show("File does not exist");
+                return;
+            }
+
+            PdfDocument doc = PdfDocument.Load(txtPdfPath.Text);
+
+            int nObjects = doc.Objects.Count;
+            List<PdfStream> streams = doc.Objects.Where(obj => obj.Data.Type == PdfElementTypes.Stream).Select(obj => (PdfStream)obj.Data).ToList();
+            int nStreams = streams.Count;
+            List<PdfStream> streamsWithFilters = streams
+                .Where(stream => stream.Dictionary.Values.ContainsKey("Filter"))
+                .ToList();
+            var streamFilters = new List<string>();
+            foreach(PdfStream stream in streamsWithFilters)
+            {
+                IPdfElement filter = stream.Dictionary.Values["Filter"];
+                if (filter is PdfArray)
+                {
+                    filter = ((PdfArray)filter).Values[0];
+                }
+                if (filter is PdfName)
+                {
+                    streamFilters.Add(((PdfName)filter).Value);
+                }
+            }
+
+            txtOutput.Lines = new string[]
+            {
+                string.Format("Number of Objects: {0}", nObjects),
+                string.Format("Number of Streams: {0}", nStreams),
+                string.Format("Stream Filters: {0}", string.Join(", ", streamFilters.Distinct().ToArray())),
+            };
+
+        }
+
+    }
+}

VAR.PdfTools.Workbench/FrmPdfInfo.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

VAR.PdfTools.Workbench/Program.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace VAR.PdfTools.Workbench
+{
+    static class Program
+    {
+        /// <summary>
+        /// The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+            Application.Run(new FrmPdfInfo());
+        }
+    }
+}

VAR.PdfTools.Workbench/Properties/AssemblyInfo.cs

@@ -0,0 +1,14 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+[assembly: AssemblyTitle("VAR.PdfTools.Workbench")]
+[assembly: AssemblyDescription("PdfTools Workbench")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("VAR")]
+[assembly: AssemblyProduct("VAR.PdfTools.Workbench")]
+[assembly: AssemblyCopyright("Copyright © VAR 2016")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: ComVisible(false)]
+[assembly: Guid("a5825d8e-9f81-49e0-b610-8ae5e46d02ea")]
+[assembly: AssemblyVersion("1.0.*")]

VAR.PdfTools.Workbench/Properties/Resources.Designer.cs

@@ -0,0 +1,71 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace VAR.PdfTools.Workbench.Properties
+{
+
+
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources
+    {
+
+        private static global::System.Resources.ResourceManager resourceMan;
+
+        private static global::System.Globalization.CultureInfo resourceCulture;
+
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources()
+        {
+        }
+
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager
+        {
+            get
+            {
+                if ((resourceMan == null))
+                {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("VAR.PdfTools.Workbench.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture
+        {
+            get
+            {
+                return resourceCulture;
+            }
+            set
+            {
+                resourceCulture = value;
+            }
+        }
+    }
+}

VAR.PdfTools.Workbench/Properties/Resources.resx

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

VAR.PdfTools.Workbench/Properties/Settings.Designer.cs

@@ -0,0 +1,38 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace VAR.PdfTools.Workbench.Properties {
+    
+    
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "14.0.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
+        
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+        
+        public static Settings Default {
+            get {
+                return defaultInstance;
+            }
+        }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("")]
+        public string LastPdfPath {
+            get {
+                return ((string)(this["LastPdfPath"]));
+            }
+            set {
+                this["LastPdfPath"] = value;
+            }
+        }
+    }
+}

VAR.PdfTools.Workbench/Properties/Settings.settings

@@ -0,0 +1,9 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)" GeneratedClassNamespace="VAR.PdfTools.Workbench.Properties" GeneratedClassName="Settings">
+  <Profiles />
+  <Settings>
+    <Setting Name="LastPdfPath" Type="System.String" Scope="User">
+      <Value Profile="(Default)" />
+    </Setting>
+  </Settings>
+</SettingsFile>

VAR.PdfTools.Workbench/VAR.PdfTools.Workbench.csproj

@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{A5825D8E-9F81-49E0-B610-8AE5E46D02EA}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>VAR.PdfTools.Workbench</RootNamespace>
+    <AssemblyName>VAR.PdfTools.Workbench</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Deployment" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="FrmPdfInfo.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="FrmPdfInfo.Designer.cs">
+      <DependentUpon>FrmPdfInfo.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <EmbeddedResource Include="FrmPdfInfo.resx">
+      <DependentUpon>FrmPdfInfo.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+      <SubType>Designer</SubType>
+    </EmbeddedResource>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\VAR.PdfTools\VAR.PdfTools.csproj">
+      <Project>{eb7e003a-6a95-4002-809f-926c7c8a11e9}</Project>
+      <Name>VAR.PdfTools</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

VAR.PdfTools.sln

@@ -0,0 +1,28 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25123.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VAR.PdfTools", "VAR.PdfTools\VAR.PdfTools.csproj", "{EB7E003A-6A95-4002-809F-926C7C8A11E9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "VAR.PdfTools.Workbench", "VAR.PdfTools.Workbench\VAR.PdfTools.Workbench.csproj", "{A5825D8E-9F81-49E0-B610-8AE5E46D02EA}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{EB7E003A-6A95-4002-809F-926C7C8A11E9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EB7E003A-6A95-4002-809F-926C7C8A11E9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EB7E003A-6A95-4002-809F-926C7C8A11E9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EB7E003A-6A95-4002-809F-926C7C8A11E9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A5825D8E-9F81-49E0-B610-8AE5E46D02EA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A5825D8E-9F81-49E0-B610-8AE5E46D02EA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A5825D8E-9F81-49E0-B610-8AE5E46D02EA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A5825D8E-9F81-49E0-B610-8AE5E46D02EA}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

VAR.PdfTools/PdfDocument.cs

@@ -0,0 +1,52 @@
+using System.Collections.Generic;
+using System.IO;
+
+namespace VAR.PdfTools
+{
+    public class PdfDocument
+    {
+        #region Declarations
+
+        private List<PdfObject> _objects = new List<PdfObject>();
+
+        #endregion
+
+        #region Properties
+
+        public List<PdfObject> Objects { get { return _objects; } }
+
+        #endregion
+
+        #region Life cycle
+
+        private PdfDocument() { }
+
+        #endregion
+
+        #region Public methods
+
+        public static PdfDocument Load(string filename)
+        {
+            byte[] fileBytes = File.ReadAllBytes(filename);
+            return Load(fileBytes);
+        }
+
+        public static PdfDocument Load(byte[] data)
+        {
+            var parser = new PdfParser(data);
+            var doc = new PdfDocument();
+            do
+            {
+                PdfObject obj = parser.ParseObject();
+                if (obj != null)
+                {
+                    doc.Objects.Add(obj);
+                }
+            } while (parser.IsEndOfStream() == false);
+            return doc;
+        }
+
+        #endregion
+
+    }
+}

VAR.PdfTools/PdfElements.cs

@@ -0,0 +1,96 @@
+using System.Collections.Generic;
+
+namespace VAR.PdfTools
+{
+    public enum PdfElementTypes
+    {
+        Undefined,
+        Boolean,
+        Integer,
+        Real,
+        String,
+        Name,
+        Array,
+        Dictionary,
+        Null,
+        ObjectReference,
+        Object,
+        Stream,
+    };
+
+    public interface IPdfElement
+    {
+        PdfElementTypes Type { get; }
+    }
+
+    public class PdfBoolean : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Boolean;
+        public bool Value { get; set; }
+    }
+
+    public class PdfInteger : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Integer;
+        public int Value { get; set; }
+    }
+
+    public class PdfReal : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Real;
+        public double Value { get; set; }
+    }
+
+    public class PdfString : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.String;
+        public string Value { get; set; }
+    }
+
+    public class PdfName : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Name;
+        public string Value { get; set; }
+    }
+
+    public class PdfArray : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Array;
+        private List<IPdfElement> _values = new List<IPdfElement>();
+        public List<IPdfElement> Values { get { return _values; } }
+    }
+
+    public class PdfDictionary : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Dictionary;
+        private Dictionary<string, IPdfElement> _values = new Dictionary<string, IPdfElement>();
+        public Dictionary<string, IPdfElement> Values { get { return _values; } }
+    }
+
+    public class PdfNull : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Null;
+    }
+
+    public class PdfObjectReference : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.ObjectReference;
+        public int ObjectID { get; set; }
+        public int ObjectGeneration { get; set; }
+    }
+
+    public class PdfStream : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Stream;
+        public PdfDictionary Dictionary { get; set; }
+        public byte[] Data { get; set; }
+    }
+
+    public class PdfObject : IPdfElement
+    {
+        public PdfElementTypes Type { get; private set; } = PdfElementTypes.Object;
+        public int ObjectID { get; set; }
+        public int ObjectGeneration { get; set; }
+        public IPdfElement Data { get; set; }
+    }
+}

VAR.PdfTools/PdfParser.cs

@@ -0,0 +1,748 @@
+using System;
+using System.IO;
+using System.Text;
+
+namespace VAR.PdfTools
+{
+    public class PdfParser
+    {
+        #region Declarations
+
+        private byte[] _stream = null;
+        private long _streamPosition = 0;
+
+        #endregion
+
+        #region Creator
+
+        public PdfParser(byte[] stream)
+        {
+            _stream = stream;
+        }
+
+        #endregion
+
+        #region Utility methods
+
+        private int ByteHexValue(byte character)
+        {
+            if (character >= 0x30 && character <= 0x39)
+            {
+                return (character - 0x30);
+            }
+            if (character >= 0x41 && character <= 0x46)
+            {
+                return 10 + (character - 0x41);
+            }
+            if (character >= 0x61 && character <= 0x66)
+            {
+                return 10 + (character - 0x61);
+            }
+            return 0;
+        }
+
+        private byte[] GetRawData(long length)
+        {
+            var memStream = new MemoryStream();
+            var byteArray = new byte[1];
+
+            for (long i = 0; i < length; i++)
+            {
+                byteArray[0] = PeekChar();
+                NextChar();
+                memStream.Write(byteArray, 0, 1);
+            }
+
+            return memStream.ToArray();
+        }
+
+        private byte PeekChar()
+        {
+            if (_streamPosition >= _stream.Length)
+            {
+                return 0;
+            }
+            return _stream[_streamPosition];
+        }
+
+        private byte PeekNextChar()
+        {
+            return PeekNextChar(1);
+        }
+
+        private byte PeekNextChar(int offset)
+        {
+            if ((_streamPosition + offset) >= _stream.Length)
+            {
+                return 0;
+            }
+            return _stream[_streamPosition + offset];
+        }
+
+        private bool NextChar()
+        {
+            _streamPosition++;
+            if (_streamPosition >= _stream.Length)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private bool IsWhitespace(byte character)
+        {
+            if (
+                character == 0x00 || // NULL
+                character == 0x09 || // Horizontal Tab (HT)
+                character == 0x0A || // Line Feed (LF)
+                character == 0x0C || // Form Feed (FF)
+                character == 0x0D || // Carriage Return (CR)
+                character == 0x20 || // Space (SP)
+                false)
+            {
+                return true;
+            }
+            return false;
+        }
+
+        private bool IsEndOfLine(byte character)
+        {
+            if (
+                character == 0x0A || // Line Feed (LF)
+                character == 0x0D || // Carriage Return (CR)
+                false)
+            {
+                return true;
+            }
+            return false;
+        }
+
+        private bool IsDelimiter(byte character)
+        {
+            if (
+                character == '(' ||
+                character == ')' ||
+                character == '<' ||
+                character == '>' ||
+                character == '[' ||
+                character == ']' ||
+                character == '}' ||
+                character == '{' ||
+                character == '%' ||
+                false)
+            {
+                return true;
+            }
+            return false;
+        }
+
+        private bool IsDigit(byte character)
+        {
+            if (character >= '0' && character <= '9')
+            {
+                return true;
+            }
+            return false;
+        }
+
+        private void SkipWhitespace()
+        {
+            while (IsWhitespace(PeekChar()))
+            {
+                _streamPosition++;
+                if (_streamPosition >= _stream.Length)
+                {
+                    // EOS
+                    break;
+                }
+            }
+        }
+
+        private void SkipEndOfLine()
+        {
+            byte lineFeed = 0x0A;
+            byte carriageReturn = 0x0D;
+            if (PeekChar() == carriageReturn)
+            {
+                NextChar();
+                if (_streamPosition < _stream.Length)
+                {
+                    if (_stream[_streamPosition] == lineFeed)
+                    {
+                        _streamPosition++;
+                    }
+                }
+                return;
+            }
+            if (PeekChar() != lineFeed)
+            {
+                NextChar();
+                return;
+            }
+        }
+
+        private void SkipToEndOfLine()
+        {
+            while (IsEndOfLine(PeekChar()) == false)
+            {
+                if (NextChar() == false)
+                {
+                    break;
+                }
+            }
+        }
+
+        private void SkipComment()
+        {
+            if (PeekChar() != '%') { return; }
+            SkipToEndOfLine();
+            SkipEndOfLine();
+        }
+
+        private string ParseComment()
+        {
+            if (PeekChar() != '%') { return string.Empty; }
+            NextChar();
+            StringBuilder sbComment = new StringBuilder();
+            while (IsEndOfLine(PeekChar()) == false)
+            {
+                sbComment.Append((char)PeekChar());
+                if (NextChar() == false)
+                {
+                    break;
+                }
+            }
+            SkipEndOfLine();
+            return sbComment.ToString();
+        }
+
+        private string ParseToken()
+        {
+            SkipWhitespace();
+            StringBuilder sbToken = new StringBuilder();
+            do
+            {
+                byte character = PeekChar();
+                if (char.IsLetter((char)character) == false)
+                {
+                    break;
+                }
+                sbToken.Append((char)character);
+                NextChar();
+            } while (IsEndOfStream() == false);
+            return sbToken.ToString();
+        }
+
+        private IPdfElement ParseElement()
+        {
+            IPdfElement obj = null;
+            byte character = PeekChar();
+            byte nextCharacter = PeekNextChar();
+
+            if (character == 't' || character == 'f')
+            {
+                obj = ParseBoolean();
+            }
+            if (character == 'n')
+            {
+                obj = ParseNull();
+            }
+            else if (IsDigit(character) || character == '+' || character == '-' || character == '.')
+            {
+                obj = ParseNumberOrReference();
+            }
+            else if (character == '(' || (character == '<' && nextCharacter != '<'))
+            {
+                obj = ParseString();
+            }
+            else if (character == '/')
+            {
+                obj = ParseName();
+            }
+            else if (character == '[')
+            {
+                obj = ParseArray();
+            }
+            else if (character == '<' && nextCharacter == '<')
+            {
+                obj = ParseDictionary();
+            }
+            return obj;
+        }
+
+        private PdfBoolean ParseBoolean()
+        {
+            if (
+                PeekNextChar(0) == 't' &&
+                PeekNextChar(1) == 'r' &&
+                PeekNextChar(2) == 'u' &&
+                PeekNextChar(3) == 'e'
+                )
+            {
+                NextChar();
+                NextChar();
+                NextChar();
+                NextChar();
+                return new PdfBoolean { Value = true };
+            }
+
+            if (
+                PeekNextChar(0) == 'f' &&
+                PeekNextChar(1) == 'a' &&
+                PeekNextChar(2) == 'l' &&
+                PeekNextChar(3) == 's' &&
+                PeekNextChar(4) == 'e'
+                )
+            {
+                NextChar();
+                NextChar();
+                NextChar();
+                NextChar();
+                NextChar();
+                return new PdfBoolean { Value = false };
+            }
+
+            return null;
+        }
+
+        private PdfNull ParseNull()
+        {
+            if (
+                PeekNextChar(0) == 'n' &&
+                PeekNextChar(0) == 'u' &&
+                PeekNextChar(0) == 'l' &&
+                PeekNextChar(0) == 'l'
+                )
+            {
+                NextChar();
+                NextChar();
+                NextChar();
+                NextChar();
+                return new PdfNull();
+            }
+
+            return null;
+        }
+
+        private IPdfElement ParseNumber()
+        {
+            long startPosition = _streamPosition;
+            bool valid = false;
+            int dotCount = 0;
+            StringBuilder sbNumber = new StringBuilder();
+            if (PeekChar() == '-')
+            {
+                sbNumber.Append('-');
+                NextChar();
+            }
+            else if (PeekChar() == '+')
+            {
+                NextChar();
+            }
+            while (IsDigit(PeekChar()) || PeekChar() == '.')
+            {
+                if (PeekChar() == '.')
+                {
+                    dotCount++;
+                }
+                sbNumber.Append((char)PeekChar());
+                NextChar();
+                valid = true;
+            }
+            if (valid && dotCount <= 1)
+            {
+                if (dotCount == 0)
+                {
+                    PdfInteger obj = new PdfInteger();
+                    obj.Value = Convert.ToInt32(sbNumber.ToString());
+                    return obj;
+                }
+                if (dotCount == 1)
+                {
+                    PdfReal obj = new PdfReal();
+                    obj.Value = Convert.ToDouble(sbNumber.ToString());
+                    return obj;
+                }
+            }
+            throw new Exception(string.Format("Expected number at {0}, found \"{1}\"", startPosition, sbNumber.ToString()));
+        }
+
+        private IPdfElement ParseNumberOrReference()
+        {
+            IPdfElement obj = ParseNumber();
+            PdfInteger number = obj as PdfInteger;
+            if (number == null)
+            {
+                return obj;
+            }
+
+            // Try to get an indirect object reference
+            long streamPosition = _streamPosition;
+            SkipWhitespace();
+            if (char.IsDigit((char)PeekChar()) == false)
+            {
+                _streamPosition = streamPosition;
+                return obj;
+            }
+            IPdfElement objectGeneration = ParseNumber();
+            SkipWhitespace();
+            if (PeekChar() != 'R')
+            {
+                _streamPosition = streamPosition;
+                return obj;
+            }
+            NextChar();
+            PdfObjectReference objRef = new PdfObjectReference();
+            objRef.ObjectID = number.Value;
+            objRef.ObjectGeneration = ((PdfInteger)objectGeneration).Value;
+            return objRef;
+        }
+
+        private PdfString ParseString()
+        {
+            if (PeekChar() == '(')
+            {
+                StringBuilder sbString = new StringBuilder();
+                int depth = 1;
+                NextChar();
+                do
+                {
+                    byte character = PeekChar();
+                    if (character == '(')
+                    {
+                        depth++;
+                        sbString.Append((char)character);
+                    }
+                    else if (character == ')')
+                    {
+                        depth--;
+                        sbString.Append((char)character);
+                        if (depth == 0)
+                        {
+                            break;
+                        }
+                    }
+                    else if (character == '\\')
+                    {
+                        if (NextChar() == false)
+                        {
+                            throw new Exception("Unexpected end of string and file");
+                        }
+                        character = PeekChar();
+                        if (character == 'n')
+                        {
+                            sbString.Append('\n');
+                        }
+                        else if (character == 'r')
+                        {
+                            sbString.Append('\n');
+                        }
+                        else if (character == 't')
+                        {
+                            sbString.Append('\t');
+                        }
+                        else if (character == 'b')
+                        {
+                            sbString.Append('\b');
+                        }
+                        else if (character == 'f')
+                        {
+                            sbString.Append('\f');
+                        }
+                        else if (character == '(')
+                        {
+                            sbString.Append('(');
+                        }
+                        else if (character == ')')
+                        {
+                            sbString.Append(')');
+                        }
+                        else if (character == '\\')
+                        {
+                            sbString.Append('\\');
+                        }
+                        else if (IsEndOfLine(character))
+                        {
+                            SkipEndOfLine();
+                            continue;
+                        }
+                        else if (IsDigit(character))
+                        {
+                            if (_streamPosition + 2 >= _stream.Length)
+                            {
+                                throw new Exception("Unexpected end of string and file");
+                            }
+                            StringBuilder sbOctal = new StringBuilder();
+                            sbOctal.Append((char)character);
+                            NextChar();
+                            sbOctal.Append((char)PeekChar());
+                            NextChar();
+                            sbOctal.Append((char)PeekChar());
+                            char newCharacter = (char)(Convert.ToInt32(sbOctal.ToString(), 8));
+                        }
+                    }
+                    else
+                    {
+                        sbString.Append((Char)character);
+                    }
+                    if (NextChar() == false)
+                    {
+                        throw new Exception("Unexpected end of string and file");
+                    }
+                } while (IsEndOfStream() == false);
+
+                PdfString obj = new PdfString();
+                obj.Value = sbString.ToString();
+                return obj;
+            }
+            else if (PeekChar() == '<')
+            {
+                StringBuilder sbString = new StringBuilder();
+                NextChar();
+                do
+                {
+                    byte character = PeekChar();
+                    if (character == '>') { break; }
+                    byte nextCharacter = PeekNextChar(1);
+                    byte realChar = (byte)(ByteHexValue(character) * 16 + ByteHexValue(nextCharacter));
+                    sbString.Append((Char)realChar);
+                    NextChar();
+                } while (IsEndOfStream() == false);
+                NextChar();
+
+                PdfString obj = new PdfString();
+                obj.Value = sbString.ToString();
+                return obj;
+            }
+            return null;
+        }
+
+        private PdfName ParseName()
+        {
+            if (PeekChar() != '/')
+            {
+                return null;
+            }
+            NextChar();
+            StringBuilder sbName = new StringBuilder();
+            do
+            {
+                byte character = PeekChar();
+                if (IsDelimiter(character) || character == '/')
+                {
+                    break;
+                }
+                else if (character == '#')
+                {
+                    StringBuilder sbHex = new StringBuilder();
+                    sbHex.Append((char)character);
+                    if (NextChar() == false)
+                    {
+                        throw new Exception("Unexpected end of string and file");
+                    }
+                    sbHex.Append((char)character);
+                    byte newChar = Convert.ToByte(sbHex.ToString(), 16);
+                    sbName.Append((char)newChar);
+                }
+                else if (character > 0x20 && character < 0x7F)
+                {
+                    sbName.Append((char)character);
+                }
+                else
+                {
+                    break;
+                }
+                if (NextChar() == false)
+                {
+                    throw new Exception("Unexpected end of name and file");
+                }
+            } while (IsEndOfStream() == false);
+
+            PdfName obj = new PdfName();
+            obj.Value = sbName.ToString();
+            return obj;
+        }
+
+        private PdfArray ParseArray()
+        {
+            if (PeekChar() != '[')
+            {
+                return null;
+            }
+            NextChar();
+            SkipWhitespace();
+
+            PdfArray array = new PdfArray();
+            do
+            {
+                byte character = PeekChar();
+
+                if (character == ']')
+                {
+                    NextChar();
+                    break;
+                }
+                else
+                {
+                    IPdfElement obj = ParseElement();
+                    array.Values.Add(obj);
+                }
+                SkipWhitespace();
+            } while (IsEndOfStream() == false);
+            return array;
+        }
+
+        private PdfDictionary ParseDictionary()
+        {
+            if (PeekChar() != '<' || PeekNextChar() != '<')
+            {
+                return null;
+            }
+            NextChar();
+            NextChar();
+            SkipWhitespace();
+
+            PdfName previousName = null;
+            PdfDictionary dict = new PdfDictionary();
+            do
+            {
+                byte character = PeekChar();
+                byte nextCharacter = PeekNextChar();
+
+                if (character == '>' && nextCharacter == '>')
+                {
+                    NextChar();
+                    NextChar();
+                    break;
+                }
+                else if (character == '/')
+                {
+                    PdfName name = ParseName();
+                    previousName = name;
+                    SkipWhitespace();
+                    IPdfElement obj = ParseElement();
+                    if (obj is PdfNull)
+                    {
+                        dict.Values.Remove(name.Value);
+                    }
+                    else
+                    {
+                        previousName = name;
+                        if (dict.Values.ContainsKey(name.Value))
+                        {
+                            dict.Values[name.Value] = obj;
+                        }
+                        else
+                        {
+                            dict.Values.Add(name.Value, obj);
+                        }
+                    }
+                    SkipWhitespace();
+                }
+                else
+                {
+                    throw new Exception(string.Format("Error parsing Dictionary at: {0}", _streamPosition));
+                }
+
+            } while (IsEndOfStream() == false);
+            return dict;
+        }
+
+        #endregion
+
+        #region Public methods
+
+        public PdfObject ParseObject()
+        {
+            PdfObject obj = null;
+            long startPosition = _streamPosition;
+            do
+            {
+                SkipWhitespace();
+                byte character = PeekChar();
+
+                if (character == '%')
+                {
+                    SkipComment();
+                }
+                else if (IsDigit(character))
+                {
+                    IPdfElement objectID = ParseNumber();
+                    SkipWhitespace();
+                    IPdfElement objectGeneration = ParseNumber();
+                    SkipWhitespace();
+                    string token = ParseToken();
+                    if (token == "obj")
+                    {
+                        SkipWhitespace();
+                        IPdfElement element = ParseElement();
+                        string endToken = ParseToken();
+
+                        // Intercept streams
+                        if (endToken == "stream")
+                        {
+                            PdfDictionary streamDict = element as PdfDictionary;
+                            if (streamDict == null)
+                            {
+                                throw new Exception(string.Format("Stream after a not dictionary element at: {0}", _streamPosition));
+                            }
+                            if (streamDict.Values.ContainsKey("Length") == false)
+                            {
+                                throw new Exception(string.Format("Dictionary of stream does not specify Lenght at: {0}", _streamPosition));
+                            }
+                            long length = ((PdfInteger)streamDict.Values["Length"]).Value;
+                            SkipEndOfLine();
+                            byte[] streamBody = GetRawData(length);
+                            SkipEndOfLine();
+                            endToken = ParseToken();
+                            if (endToken != "endstream")
+                            {
+                                throw new Exception(string.Format("Expected \"endstream\" token, \"{0}\" found at: {1}", token, _streamPosition));
+                            }
+                            SkipWhitespace();
+                            endToken = ParseToken();
+                            PdfStream stream = new PdfStream();
+                            stream.Dictionary = streamDict;
+                            stream.Data = streamBody;
+                            element = stream;
+                        }
+
+                        if (endToken == "endobj")
+                        {
+                            obj = new PdfObject();
+                            obj.ObjectID = ((PdfInteger)objectID).Value;
+                            obj.ObjectGeneration = ((PdfInteger)objectGeneration).Value;
+                            obj.Data = element;
+                            break;
+                        }
+                    }
+                }
+                else
+                {
+                    long streamPosition = _streamPosition;
+                    string token = ParseToken();
+                    if (token == "startxref")
+                    {
+                        // FIXME: Ignoring xref for now
+                        SkipEndOfLine();
+                        SkipToEndOfLine();
+                        SkipEndOfLine();
+                        SkipToEndOfLine();
+                        SkipEndOfLine();
+                        SkipWhitespace();
+                        continue;
+                    }
+                    throw new Exception(string.Format("Expected objectID at {0}", startPosition));
+                }
+            } while (IsEndOfStream() == false);
+            return obj;
+        }
+
+        public bool IsEndOfStream()
+        {
+            return _streamPosition >= _stream.Length;
+        }
+
+        #endregion
+    }
+}

VAR.PdfTools/Properties/AssemblyInfo.cs

@@ -0,0 +1,14 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+[assembly: AssemblyTitle("VAR.PdfTools")]
+[assembly: AssemblyDescription("PdfTools Library")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("VAR")]
+[assembly: AssemblyProduct("VAR.PdfTools")]
+[assembly: AssemblyCopyright("Copyright © VAR 2016")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: ComVisible(false)]
+[assembly: Guid("eb7e003a-6a95-4002-809f-926c7c8a11e9")]
+[assembly: AssemblyVersion("1.0.*")]

VAR.PdfTools/VAR.PdfTools.csproj

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{EB7E003A-6A95-4002-809F-926C7C8A11E9}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>VAR.PdfTools</RootNamespace>
+    <AssemblyName>VAR.PdfTools</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="PdfDocument.cs" />
+    <Compile Include="PdfElements.cs" />
+    <Compile Include="PdfParser.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>