FrmExec: Limpiar código y añadir soporte para generar inserts con imágenes y booleanos

ServerExplorer/UI/FrmExec.Designer.cs

@@ -62,15 +62,20 @@
             this.txtCommand.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
             this.txtCommand.Size = new System.Drawing.Size(604, 57);
             this.txtCommand.TabIndex = 1;
+            this.txtCommand.TabWidth = 8;
             // 
             // dgvDatos
             // 
+            this.dgvDatos.AllowUserToAddRows = false;
+            this.dgvDatos.AllowUserToDeleteRows = false;
+            this.dgvDatos.AllowUserToOrderColumns = true;
             this.dgvDatos.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.dgvDatos.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
             this.dgvDatos.Location = new System.Drawing.Point(3, 3);
             this.dgvDatos.Name = "dgvDatos";
+            this.dgvDatos.ReadOnly = true;
             this.dgvDatos.Size = new System.Drawing.Size(604, 338);
             this.dgvDatos.TabIndex = 2;
             this.dgvDatos.CellFormatting += new System.Windows.Forms.DataGridViewCellFormattingEventHandler(this.dgvDatos_CellFormatting);
@@ -117,7 +122,6 @@
             this.Controls.Add(this.splitContainer1);
             this.Name = "FrmExec";
             this.Text = "frmExec";
-            this.Load += new System.EventHandler(this.frmExec_Load);
             ((System.ComponentModel.ISupportInitialize)(this.dgvDatos)).EndInit();
             this.splitContainer1.Panel1.ResumeLayout(false);
             this.splitContainer1.Panel1.PerformLayout();

ServerExplorer/UI/FrmExec.cs

@@ -13,8 +13,13 @@ namespace ServerExplorer.UI
 {
     public partial class FrmExec : Form
     {
+        #region Declarations
+
         private string cnxString;
 
+        #endregion
+
+        #region Form life cycle
 
         public FrmExec(string cnxString)
         {
@@ -23,11 +28,54 @@ namespace ServerExplorer.UI
             this.cnxString = cnxString;
         }
 
-        private void frmExec_Load(object sender, EventArgs e)
+        #endregion
-        {
 
+        #region Events
+
+        private void btnExec_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                DataTable dt = Exec();
+                dgvDatos.DataSource = dt;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message);
+            }
         }
 
+        private void btnGenInserts_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                // Obtener el nombre de la tabla destino
+                string destTable = Microsoft.VisualBasic.Interaction.InputBox("Nombre de la tabla destino", "tabla destino", String.Empty,
+                    this.Top + (this.Height / 2), this.Left + (this.Width / 2));
+
+                DataTable dt = GenerarInserts(destTable);
+                dgvDatos.DataSource = dt;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message);
+            }
+        }
+
+        private void dgvDatos_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
+        {
+            if (e.DesiredType == typeof(Image))
+            {
+                if (e.Value is DBNull || (e.Value is byte[] && ((byte[])e.Value).Length <= 0))
+                {
+                    e.Value = new Bitmap(1, 1);
+                }
+            }
+        }
+
+        #endregion
+
+        #region Private methods
 
         private DataTable Exec()
         {
@@ -48,57 +96,24 @@ namespace ServerExplorer.UI
             return dt;
         }
 
-        private void btnExec_Click(object sender, EventArgs e)
+        private DataTable GenerarInserts(string destTable)
         {
-            try
+            DataTable dataTable = new DataTable();
-            {
+            DataTable destDataTable;
-                // Ejecutar consulta
+            NumberFormatInfo nfi = new NumberFormatInfo { NumberDecimalSeparator = "." };
-                DataTable dt = Exec();
 
-                // Mostrar resultados
+            dataTable = Exec();
-                dgvDatos.DataSource = dt;
-            }
-            catch (Exception ex)
-            {
-                MessageBox.Show(ex.Message);
-            }
-        }
-
-        private void btnGenInserts_Click(object sender, EventArgs e)
-        {
-            DataTable dt = new DataTable();
-            DataTable ddt;
-            string destname = String.Empty;
-            NumberFormatInfo nfi = new NumberFormatInfo();
-
-            // Preparar un conversor de formato numerico que use puntos para los decimales
-            nfi.NumberDecimalSeparator = ".";
-
-            // Obtener el nombre de la tabla destino
-            destname = Microsoft.VisualBasic.Interaction.InputBox("Nombre de la tabla destino", "tabla destino", String.Empty,
-                this.Top + (this.Height / 2), this.Left + (this.Width / 2));
-
-            try
-            {
-                // Ejecutar consulta
-                dt = Exec();
-            }
-            catch (Exception ex)
-            {
-                MessageBox.Show(ex.Message);
-            }
 
             // Preparar la datatable destino
-            ddt = new DataTable();
+            destDataTable = new DataTable();
-            ddt.Columns.Add("Comando", typeof(String));
+            destDataTable.Columns.Add("Comando", typeof(String));
-
 
             // Recorrer la tabla de datos
-            foreach (DataRow dr in dt.Rows)
+            foreach (DataRow dr in dataTable.Rows)
             {
                 string strColumns = String.Empty;
                 string strValues = String.Empty;
-                foreach (DataColumn dc in dt.Columns)
+                foreach (DataColumn dc in dataTable.Columns)
                 {
                     // El nombre de la columna
                     if (strColumns != String.Empty)
@@ -109,53 +124,55 @@ namespace ServerExplorer.UI
                     if (strValues != String.Empty)
                         strValues += ", ";
                     object valor = dr[dc];
-                    if (valor == DBNull.Value)
+                    if (valor == DBNull.Value || valor == null)
                     {
                         // NULOS
                         strValues += "NULL";
                     }
                     else
-                        if (dc.DataType.Name.ToLower() == "string")
+                    {
+                        string type = dc.DataType.Name.ToLower();
+                        if (type == "string")
                         {
                             // Cadenas
                             strValues += "'" + ((string)valor).Replace("'", "''") + "'";
                         }
-                        else
+                        else if (type == "decimal")
-                            if (dc.DataType.Name.ToLower() == "decimal")
                         {
                             // Decimales
                             strValues += ((decimal)valor).ToString(nfi);
                         }
+                        else if (type == "bit" || type == "bool" || type == "boolean")
+                        {
+                            // Booleanos
+                            strValues += ((bool)valor) ? "1" : "0";
+                        }
+                        else if (type == "byte[]" )
+                        {
+                            // Arrays de bytes (imagenes, archivos etc)
+                            strValues += "0x" + BitConverter.ToString(((byte[])valor)).Replace("-", "");
+                        }
                         else
                         {
                             // Otros
                             strValues += valor.ToString();
                         }
+
+                    }
                 }
 
                 // Insertar fila a la datatable destino
-                ddt.Rows.Add(new object[] { 
+                destDataTable.Rows.Add(
-                    "INSERT INTO " + destname + 
+                    new object[] { 
-                        " (" + strColumns + ") "+
+                        String.Format("INSERT INTO {0} ({1}) VALUES ({2})",
-                        "VALUES (" + strValues + ")" });
+                            destTable, strColumns, strValues)
+                    });
             }
 
-            // Establecer el resultado
+            return destDataTable;
-            dgvDatos.DataSource = ddt;
-        }
-
-        private void dgvDatos_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)
-        {
-            if (e.DesiredType == typeof(Image))
-            {
-                if (e.Value is DBNull || (e.Value is byte[] && ((byte[])e.Value).Length <= 0))
-                {
-                    e.Value = new Bitmap(1, 1);
-                }
-            }
         }
 
 
-
+        #endregion
     }
 }