C# + как я могу использовать перетаскивание для datagridview в windows forms также с сенсорным экраном?

---

Drag and drop with a Datagrid in Windows Forms works perfectly with mouse operation. If I try it with Touch it does not work. Does anyone have any tips on which direction I can look or what I should do?

Thanks for the help

Что я уже пробовал:

private void DgvBeschallung_DragDrop(object sender, DragEventArgs e)
{
   // The mouse locations are relative to the screen, so they must be 
   // converted to client coordinates.
   Point clientPoint = DgvBeschallung.PointToClient(new Point(e.X, e.Y));

   // Get the row index of the item the mouse is below. 
   rowIndexOfItemUnderMouseToDrop = DgvBeschallung.HitTest(clientPoint.X, clientPoint.Y).RowIndex;

   if (rowIndexOfItemUnderMouseToDrop > -1)
   {
       // If the drag operation was a move then remove and insert the row.
       if (e.Effect == DragDropEffects.Move)
       {
           DataGridViewRow rowToMove = e.Data.GetData(typeof(DataGridViewRow)) as DataGridViewRow;
           DgvBeschallung.Rows.RemoveAt(rowIndexFromMouseDown);
           DgvBeschallung.Rows.Insert(rowIndexOfItemUnderMouseToDrop, rowToMove);
       }
   }
}

private void DgvBeschallung_DragOver(object sender, DragEventArgs e)
{
   e.Effect = DragDropEffects.Move;
}

private void DgvBeschallung_MouseDown(object sender, MouseEventArgs e)
{
   // Get the index of the item the mouse is below.
   rowIndexFromMouseDown = DgvBeschallung.HitTest(e.X, e.Y).RowIndex;

   if (rowIndexFromMouseDown != -1)
   {
       // Remember the point where the mouse down occurred. 
       // The DragSize indicates the size that the mouse can move 
       // before a drag event should be started.                
       Size dragSize = SystemInformation.DragSize;

       // Create a rectangle using the DragSize, with the mouse position being
       // at the center of the rectangle.
       dragBoxFromMouseDown = new Rectangle(
                 new Point(
                   e.X - (dragSize.Width / 2),
                   e.Y - (dragSize.Height / 2)),
             dragSize);
   }
   else
       // Reset the rectangle if the mouse is not over an item in the ListBox.
       dragBoxFromMouseDown = Rectangle.Empty;
}

private void DgvBeschallung_MouseMove(object sender, MouseEventArgs e)
{
   if ((e.Button & MouseButtons.Left) == MouseButtons.Left)
   {
       // If the mouse moves outside the rectangle, start the drag.
       if (dragBoxFromMouseDown != Rectangle.Empty &&
       !dragBoxFromMouseDown.Contains(e.X, e.Y))
       {
           // Proceed with the drag and drop, passing in the list item.                    
           DragDropEffects dropEffect = DgvBeschallung.DoDragDrop(
                 DgvBeschallung.Rows[rowIndexFromMouseDown],
                 DragDropEffects.Move);
       }
   }
}

---