DataGridView.DragRowOver Event

Occurs each time a row is over another row when being dragged.

Namespace: DevExpress.Maui.DataGrid

Assembly: DevExpress.Maui.DataGrid.dll

NuGet Package: DevExpress.Maui.DataGrid

Declaration

public event EventHandler<DropRowEventArgs> DragRowOver

Event Data

The DragRowOver event's data class is DropRowEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.
DragItem	Gets a data source item that corresponds to the dragged row. Inherited from DragRowEventArgs.
DropItem	Gets a data source item that corresponds to the drop target row.
DropRowHandle	Gets the grid’s dropped row handle.
RowHandle	Returns the handle of the processed row. Inherited from CancelRowEventArgs.

Remarks

The DragRowOver event allows you to manage the drag-and-drop action on stage of moving the row over another rows.

You can prevent dropping the row to specific positions. In this case, no place for row drop is allocated.

1. Subscribe to the DragRowOver event.

   Xaml

   <dxg:DataGridView AllowDragDropRows="True" 
                     DragRowOver="grid_DragRowOver"/>
   

2. In the event handler, use the RowHandle property to identify the dragged row, and the DropRowHandle property to identify the drop position. Set the e.Cancel property to true to prohibit row drop.

   The following example shows how to prevent users from dropping a row in a lower position:

   C#

   using DevExpress.Maui.DataGrid;
   
   // ...
   private void grid_DragRowOver(object sender, DropRowEventArgs e) {
          if (e.DropRowHandle > e.RowHandle) e.Cancel = true;
   }