FdoToolbox.Base.FileDragAndDropHandler.OnDragEnter C# (CSharp) Method

        internal static void OnDragEnter(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                Array a = e.Data.GetData(DataFormats.FileDrop) as Array;
                if (a != null && a.Length > 0)
                {
                    e.Effect = DragDropEffects.Copy;
                }
                else
                    e.Effect = DragDropEffects.None;
            }
            else
                e.Effect = DragDropEffects.None;
        }