Merge pull request #5 from SyncfusionExamples/ES-975464

ES-975464 - Resolve the ReadMe file length issue in this sample repository

Author: vijayarasan

README.md

@@ -1,7 +1,72 @@
-# How to show different context menu for each column in WPF DataGrid (SfDataGrid)?
+# How to Show Different Context Menu for each Column in WPF DataGrid?
+ 
+[WPF DataGrid](https://www.syncfusion.com/wpf-controls/datagrid) (SfDataGrid) allows you to set different [ContextMenu](https://learn.microsoft.com/en-us/dotnet/api/system.windows.controls.contextmenu?view=netframework-4.7.2) for each column using the [SfDataGrid.GridContextMenuOpening](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Grid.SfDataGrid.html#Syncfusion_UI_Xaml_Grid_SfDataGrid_GridContextMenuOpening) event.
 
-This example illustrates how to show different context menu for each column in [WPF DataGrid](https://www.syncfusion.com/wpf-ui-controls/datagrid) (SfDataGrid).
+Refer to the following code example to define different ContextMenu for each column based on the column index in **SfDataGrid.GridContextMenuOpening** event. Here, the first three columns have different ContextMenu and the rest of columns have different ContextMenu,
 
-[WPF DataGrid](https://www.syncfusion.com/wpf-ui-controls/datagrid) (SfDataGrid) allows you to set different ContextMenu for each column using the [SfDataGrid.GridContextMenuOpening](http://help.syncfusion.com/cr/cref_files/wpf/Syncfusion.SfGrid.WPF~Syncfusion.UI.Xaml.Grid.SfDataGrid~GridContextMenuOpening_EV.html) event.
+```csharp
+this.AssociatedObject.GridContextMenuOpening += AssociatedObject_GridContextMenuOpening;
+ 
+private void AssociatedObject_GridContextMenuOpening(object sender, GridContextMenuEventArgs e)
+{
+    e.ContextMenu.Items.Clear();
+    var columnIndex = this.AssociatedObject.ResolveToGridVisibleColumnIndex(e.RowColumnIndex.ColumnIndex);
 
-KB article - [How to show different context menu for each column in WPF DataGrid (SfDataGrid)?](https://www.syncfusion.com/kb/9840/how-to-show-different-context-menu-for-each-column-in-wpf-datagrid-sfdatagrid)
+    if (columnIndex < 0 && columnIndex >= this.AssociatedObject.Columns.Count)
+        return;
+    var column = this.AssociatedObject.Columns[columnIndex];
+    if (column == null)
+        return;
+
+    List<object> commandParameter = new List<object>();
+    commandParameter.Add(this.AssociatedObject);
+    commandParameter.Add(column);
+    CommandBinding binding = new CommandBinding();
+    this.AssociatedObject.CommandBindings.Add(binding);
+
+    if (columnIndex < 3)
+    {
+        e.ContextMenu.Items.Add(new MenuItem()
+        {
+            Header = "AddSort",
+            Command = ContextMenuCommands.AddSort,
+            CommandParameter = commandParameter
+        });
+        e.ContextMenu.Items.Add(new MenuItem()
+        {
+            Header = "AddGroup",
+            Command = ContextMenuCommands.AddGroup,
+            CommandParameter = commandParameter
+        });
+        e.ContextMenu.Items.Add(new MenuItem()
+        {
+            Header = "ClearSort",
+            Command = ContextMenuCommands.ClearSort,
+            CommandParameter = commandParameter
+        });
+        e.ContextMenu.Items.Add(new MenuItem()
+        {
+            Header = "ClearGroup",
+            Command = ContextMenuCommands.ClearGroup,
+            CommandParameter = commandParameter
+        });
+    }
+    else 
+    {
+        e.ContextMenu.Items.Add(new MenuItem()
+        {
+            Header = "Copy",
+            Command = ContextMenuCommands.Copy,
+            CommandParameter = commandParameter
+        });
+        e.ContextMenu.Items.Add(new MenuItem()
+        {
+            Header = "Paste",
+            Command = ContextMenuCommands.Paste,
+            CommandParameter = commandParameter
+        });
+    }
+}
+```
+
+![Showing context menu for each column in WPF DataGrid](ShowingContextMenu.png)