protected override void ProcessDragDrop(Point dropLocation, ISupportDrag dragObject)
{
GroupFieldDragDropContext dataContext1 = dragObject.GetDataContext() as GroupFieldDragDropContext;
if (dataContext1 != null)
{
dataContext1.ViewTemplate.GroupDescriptors.Remove(dataContext1.GroupDescription);
}
else
{
GridViewRowInfo dataContext2 = dragObject.GetDataContext() as GridViewRowInfo;
if (dataContext2 != null)
{
if (this.RowInfo.ViewTemplate.SortDescriptors.Count > 0 || this.RowInfo.ViewTemplate.GroupDescriptors.Count > 0)
{
return;
}
bool isDroppedAtLeft = RadGridViewDragDropService.IsDroppedAtTop(dropLocation, this.Size.Height);
GridViewTemplate viewTemplate = this.Data.ViewTemplate;
int targetIndex = viewTemplate.Rows.IndexOf(this.Data);
int draggedItemIndex = viewTemplate.Rows.IndexOf(dataContext2);
RadGridViewDragDropService.CalculateTargetIndex(isDroppedAtLeft, viewTemplate.RowCount, ref targetIndex, ref draggedItemIndex);
viewTemplate.Rows.Move(draggedItemIndex, targetIndex);
}
else
{
base.ProcessDragDrop(dropLocation, dragObject);
}
}
}
public override Point GetDragHintLocation(ISupportDrop dropTarget, Point mousePosition)
{
GridRowElement gridRowElement = dropTarget as GridRowElement;
Rectangle screen = this.GridViewElement.ElementTree.Control.RectangleToScreen(gridRowElement.ControlBoundingRectangle);
Size size = this.DragHint.Image.Size;
Padding margins = this.DragHint.Margins;
int num = RadGridViewDragDropService.IsDroppedAtTop(gridRowElement.PointFromScreen(mousePosition), gridRowElement.Size.Height) ? screen.Y : screen.Bottom;
return(new Point(screen.X - margins.Left, num - size.Height / 2));
}