void PreviewDragOver(object sender, Telerik.WinControls.RadDragOverEventArgs e)
{
Point mousePos = MousePosition;
Point panoramaPoint = this.panUsingPlayingBoards.PointToClient(mousePos);
TileGroupElement groupElement = GetItemGroup((RadTileElement)e.DragInstance);
e.CanDrop = groupElement.ControlBoundingRectangle.Contains(panoramaPoint);
}
private void OnPreviewDragOver(object sender, Telerik.WinControls.RadDragOverEventArgs e)
{
GridDataCellElement dataCell = e.HitTarget as GridDataCellElement;
if (dataCell != null)
{
TreeNodeElement element = e.DragInstance as TreeNodeElement;
object value = null;
e.CanDrop = RadDataConverter.Instance.TryParse(dataCell as IDataConversionInfoProvider,
element.Data.Name, out value) == null;
}
}
