GlobalErrorHandler: Class to handle global errors

Scrummer/Code/GlobalErrorHandler.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using Scrummer.Code.Pages;
+
+namespace Scrummer.Code
+{
+    public static class GlobalErrorHandler
+    {
+        #region Private methods
+
+        private static void ShowInternalError(HttpContext context, Exception ex)
+        {
+            context.Response.StatusCode = 500;
+            context.Response.Clear();
+            context.Response.Write("<h2>Internal error</h2>");
+            context.Response.Write(String.Format("<p><b>Message:</b> {0}</p>", ex.Message));
+            context.Response.Write(String.Format("<p><b>StackTrace:</b></p> <pre><code>{0}</code></pre>", ex.StackTrace));
+
+            // Fill response to 512 bytes to avoid browser "beauty" response of errors.
+            long fillResponse = 512 - (ex.Message.Length + ex.StackTrace.Length); ;
+            if (fillResponse > 0)
+            {
+                context.Response.Write("<!--");
+                for (int i = 0; i < fillResponse; i++)
+                {
+                    context.Response.Write("A");
+                }
+                context.Response.Write("-->");
+            }
+        }
+
+        #endregion
+
+        #region Public methods
+
+        public static void HandleError(HttpContext context,Exception ex){
+            try
+            {
+                IHttpHandler frmError = new FrmError(ex);
+                context.Response.Clear();
+                context.Handler = frmError;
+                frmError.ProcessRequest(context);
+            }
+            catch
+            {
+                ShowInternalError(context, ex);
+            }
+        }
+
+        #endregion
+    }
+}

Scrummer/Code/Pages/FrmError.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+using Scrummer.Code.Controls;
+
+namespace Scrummer.Code.Pages
+{
+    public class FrmError : Page
+    {
+        Exception _ex = null;
+
+        public FrmError(Exception ex)
+        {
+            _ex = ex;
+            Init += FrmError_Init;
+        }
+
+        void FrmError_Init(object sender, EventArgs e)
+        {
+            CLabel lblMessage = new CLabel { ID = "lblMessage", Text = _ex.Message, Tag = "P" };
+            Controls.Add(lblMessage);
+
+            CLabel lblStackTrace = new CLabel { ID = "lblStackTrace", Text = _ex.StackTrace, Tag = "P" };
+            Controls.Add(lblStackTrace);
+        }
+    }
+}

Scrummer/GlobalRouter.cs

@@ -1,4 +1,7 @@
-using System.Web;
+using System;
+using System.Web;
+using Scrummer.Code;
+using Scrummer.Code.JSON;
 
 namespace Scrummer
 {
@@ -10,8 +13,15 @@ namespace Scrummer
         }
 
         public void ProcessRequest(HttpContext context)
+        {
+            try
             {
                 context.Response.Write("Hello world!");
             }
+            catch (Exception ex)
+            {
+                GlobalErrorHandler.HandleError(context, ex);
+            }
+        }
     }
 }

Scrummer/Scrummer.csproj

@@ -72,10 +72,14 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Code\Controls\CLabel.cs" />
+    <Compile Include="Code\GlobalErrorHandler.cs" />
     <Compile Include="Code\JSON\ParserContext.cs" />
     <Compile Include="GlobalRouter.cs" />
     <Compile Include="Code\JSON\JSONParser.cs" />
     <Compile Include="Code\JSON\JSONWriter.cs" />
+    <Compile Include="Code\Pages\FrmError.cs">
+      <SubType>ASPXCodeBehind</SubType>
+    </Compile>
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <PropertyGroup>