How to Prevent Selection while Pressing Right-Click in WPF DataGrid?

You can prevent selection when right clicking in WPF DataGrid (SfDataGrid) by customizing the GridSelectionController and overriding the ProcessPointerPressed method.

Refer the below code example in which the row selection for DataGrid is skipped when clicking right mouse button.

protected override void ProcessPointerPressed(MouseButtonEventArgs args, RowColumnIndex rowColumnIndex)
{
    if (args.ChangedButton == MouseButton.Right)
    {
        args.Handled = true;
    }
    else
    {
        base.ProcessPointerPressed(args, rowColumnIndex);
    }
}