Merge pull request #1 from SyncfusionExamples/ES-975464

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

Author: vijayarasan

README.md

@@ -1,2 +1,36 @@
-# How to prevent the selection while pressing right click in wpf and uwp treegrid?
-This example illustrates how to prevent the selection while pressing right click in wpf and uwp treegrid
+# How to Prevent the Selection While Pressing Right Click in WPF / UWP TreeGrid?
+
+This example illustrates how to prevent the selection while pressing right click in [WPF TreeGrid](https://www.syncfusion.com/wpf-controls/treegrid) and [UWP TreeGrid](https://www.syncfusion.com/uwp-ui-controls/treegrid) (SfTreeGrid).
+
+## For WPF:
+
+You can prevent the selection when right-clicking in TreeGrid by customizing the [SelectionController](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.TreeGrid.SfTreeGrid.html#Syncfusion_UI_Xaml_TreeGrid_SfTreeGrid_SelectionController) and overriding the [ProcessPointerPressed](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.TreeGrid.TreeGridRowSelectionController.html#Syncfusion_UI_Xaml_TreeGrid_TreeGridRowSelectionController_ProcessPointerPressed_System_Windows_Input_MouseButtonEventArgs_Syncfusion_UI_Xaml_ScrollAxis_RowColumnIndex_).
+
+``` csharp
+protected override void ProcessPointerPressed(MouseButtonEventArgs args, RowColumnIndex rowColumnIndex)
+{
+    if (args.ChangedButton == MouseButton.Right)
+    {
+        args.Handled = true;
+    }
+    else
+        base.ProcessPointerPressed(args, rowColumnIndex);
+}
+```
+
+## For UWP:
+
+You can prevent the selection when right-clicking in TreeGrid by customizing the [SelectionController](https://help.syncfusion.com/cr/uwp/Syncfusion.UI.Xaml.TreeGrid.TreeGridRowSelectionController.html) and overriding the [ProcessPointerPressed](https://help.syncfusion.com/cr/uwp/Syncfusion.UI.Xaml.TreeGrid.TreeGridRowSelectionController.html#Syncfusion_UI_Xaml_TreeGrid_TreeGridRowSelectionController_ProcessPointerPressed_Windows_UI_Xaml_Input_PointerRoutedEventArgs_Syncfusion_UI_Xaml_ScrollAxis_RowColumnIndex_).
+
+``` csharp
+protected override void ProcessPointerPressed(PointerRoutedEventArgs args, RowColumnIndex rowColumnIndex)
+{
+    var properties = args.GetCurrentPoint(TreeGrid).Properties;
+    if (properties.IsRightButtonPressed)
+    {
+        args.Handled = true;
+    }
+    else
+        base.ProcessPointerPressed(args, rowColumnIndex);
+}
+```