DataGrid RightTapped Behaviour

Question

Hi,when I was using the Community Toolkit doing a right click was not automatically selecting a cell/row. Now I'm using  SfDataGrid with with SelectionMode="Extended" and a context menu. My problem right here is, that when selecting multiple items in my datagrid and doing a right click, it will deselect the rest of my previously selected items and only select the currently right clicked item. What I want to achieve is, that when multiple items are selected those items stay selected, so I can do some action my context menu like deleting those items. I tried using public override void HandlePointerOperations(GridPointerEventArgs args, Syncfusion.UI.Xaml.Grids.ScrollAxis.RowColumnIndex rowColumnIndex)but args.Operations only handles left clicks.Bascially what I want to achieve is, that a right click only selects a new item, when sfDataGrid.SelectedItems.Count <= 1, otherwise just open the context menu without (de-)selecting the current right clicked item.Best RegardsTom

Vijayarasan Sivanandham · Accepted Answer

Hi Thomas Potzel,Solution 1: If your SfDataGrid applied RowSelection. Your
requirement can be achieved by overriding the ProcessPointerPressed method
in GridSelectionController in SfDataGrid. Please refer to the below code
snippet,

//set the customized GridSelectionControllserExt to
  SfDataGrid.SelectionController when RowSelection applied in SfDataGrid
  this.dataGrid.SelectionController = new GridSelectionControllerExt(this.dataGrid);
   
   //Inherits the
  GridSelectionController Class
   public class GridSelectionControllerExt : GridSelectionController
   {
       public GridSelectionControllerExt(SfDataGrid dataGrid) : base(dataGrid)
       {
       }
   
       //overriding the ProcessPointerPressed method from
  GridSelectionController base class
       protected override void
  ProcessPointerPressed(PointerRoutedEventArgs args, RowColumnIndex
  rowColumnIndex)
       {
           //Here customize based on your scenario
   
           //here get the PointerPointProperties 
           var properties = args.GetCurrentPoint(DataGrid).Properties;
   
           //Here check the custom condition based on your scenario
           if (properties.IsRightButtonPressed &&
  !(DataGrid.SelectedItems.Count <= 1))
           {
               //Here handled the Selection
               args.Handled
  = true;
           }
           else
               base.ProcessPointerPressed(args, rowColumnIndex);            
       }
   }

UG Link: https://help.syncfusion.com/winui/datagrid/selection#customizing-selection-behaviorsSolution 2:If your SfDataGrid applied CellSelection. Your
requirement can be achieved by overriding the ProcessPointerPressed method
in GridCellSelectionController in SfDataGrid. Please refer to the below
code snippet,

//set the customized GridCellSelectionControllserExt to SfDataGrid.SelectionController
  when CellSelection applied in SfDataGrid
  this.dataGrid.SelectionController = new GridCellSelectionControllerExt(dataGrid);
   
  //Inherits the GridCellSelectionController Class
  public class GridCellSelectionControllerExt : GridCellSelectionController
  {
      public GridCellSelectionControllerExt(SfDataGrid datagrid)
        : base(datagrid)
      {
      }
   
      //overriding the ProcessPointerPressed method from
  GridCellSelectionController base class
      protected override void
  ProcessPointerPressed(PointerRoutedEventArgs args, RowColumnIndex
  rowColumnIndex)
      {
          //Here customize based on your scenario
   
          //here get the PointerPointProperties 
          var properties =
  args.GetCurrentPoint(DataGrid).Properties;
   
          //Here check the custom condition based on your scenario
          if (properties.IsRightButtonPressed &&
  !(DataGrid.SelectionController.SelectedCells.Count <= 1))
          {
              //Here handled the Selection
              args.Handled =
  true;
          }
          else
              base.ProcessPointerPressed(args, rowColumnIndex);
      }
  }

UG Link: https://help.syncfusion.com/winui/datagrid/selection#customizing-selection-behaviorsPlease find the sample in the attachment and let us know if
you have any concerns about this.Regards,Vijayarasan S

If this post is helpful, please consider Accepting it as the
solution so that other members can locate it more quickly.Attachment: SfDataGridDemo_1ffaad0e.zip

Tom · Answer

Thank you very much, exactly what I've been trying to achieve :)

Vijayarasan Sivanandham · Answer

Hi Thomas Potzel,

We are glad to know that the reported problem has been resolved at your end.
Please let us know if you have any further queries on this. We are happy to
help you😊.

Regards,Vijayarasan S