TreeViewAdv generates multiple DragItems when scrolling

Question

I''ve found that when I have AutoScrolling set to ScrollBars.Both so that dragging an item around in a tree view will cause scrolling to happen, as it scrolls the _DragItem event gets called again and again for the same item.

The problem is that when the drop happens and _DragDrop gets called it process the same item multiple times.  How can I prevent this?

Joshua Bouscher · Answer

In addition, what seems to be happening is that... in the _DragItem I call DoDragDrop.  But the actual _DragDrop doesn''t happen until I''m done dragging around, at which point it calls _DragDrop once for each time that _DragItem was called.  So I''m confused as to why _DragItem is called whenever I cause the scrollbars to move because of my dragging.

Vijayanand S · Answer

Hi Joshua,
  
I was able to reproduce the problem.We have logged a bug report  Defect #731 - ItemDrag event calls multiple time when we dragging an item around the TreeviewAdv control  on this issue and will try our very best to address the same at the earliest. 

Currently we have no workaround for this condition. If any update or workaround will be made by us regarding this issue, we will inform you. Please take a look at the Track of the bug in the open Issue.

Thanks for bringing this issue to our attention.
         

Best Regards 
Vijay

Joshua Bouscher · Answer

Hi, I was wondering if there was any status on this or when I could expect to see an update.  It looks like the defect hasn''t been looked at yet.

Thanks for your time.

Deepa TS · Answer

Hi Joshua,

The issue 



ItemDrag event calls multiple time when we dragging an item around the TreeviewAdv control has  been fixed internally and It will be available in our next release. 

I will get back to you with more information regarding the release, as soon as possible.

Thanks for your patience and continued interest in Syncfusion products.

Best regards,
Deepa.T.S

Deepa TS · Answer

Hi Joshua,

My sincere apologies for the inconvenience caused.
Defect #731 has been resolved. For the detailed solution please refer to the following link 

http://www.syncfusion.com/support/issues/tools/Default.aspx?ToDo=view&questId=731

or the sample
TreeViewAdvAutoScroll

which also illustrates the solution. Thanks for your patience. 

Regards,
Deepa.T.S