Comments on: Silverlight Drag and Drop API

By: Peter

Peter — Wed, 14 Dec 2011 16:53:23 +0000

I am trying to find a solution to drag and drop from Outlook to Silverlight App.
Can your plug-in do this? I tried running your source but it does not seem to handle this right now.

Any suggestions?
Thanks

By: Sujit

Sujit — Thu, 06 Jan 2011 06:27:17 +0000

How do i get the DragDropTarget to work only one way ?

I do not want the items to be dragged and dropped back to where they originated

By: Ning Zhang

Ning Zhang — Tue, 20 Jul 2010 04:41:55 +0000

@David Leisner
Hi David,

Yes, the behavior is pretty much the same in SL4 RTM: user will see the standard cursor change at plugin level, ie, if there is one control with AllDrop set to true, the whole plugin will display the allow drop cursor; but it is not control specific, and it is not customizable, ie, cursor won’t change for controls with AllDrop set to false, and there is no DragDropEffects to set in DragEventArgs. We may implement more DnD functionalities in future releases.

Thanks,

-Ning

By: David Leisner

David Leisner — Tue, 22 Jun 2010 19:35:23 +0000

Thank you for this extremely useful and easy-to-implement feature!

Question: in your original article you said that in the Silverlight 4 Beta “there is no visual for the dragged object or DragDropEffects.”

Is this also the case in the final Silverlight 4 release?

When dragging an image from Windows Explorer to a Silverlight ListBox, it will be extremely useful to customize the cursor appearance, and also have a different style cursor depending upon whether the target element has AllowDrop enabled or not.

Thanks!

By: spam-dev

spam-dev — Wed, 16 Jun 2010 06:10:50 +0000

Hi, thank you for sample code.

By: Steven Grigoleit

Steven Grigoleit — Thu, 03 Jun 2010 14:04:40 +0000

Hi,

is it possible to prevent the DataGridDragDropTarget from starting a drag-action?

What I whant is to use one DataGrid only as DragSource and another one only as DropTarget. And the DropTarget-only-DataGrid should not show this “StartDragShadow” when pressing and moving the mouse over an item.

Thanks!
Steven

By: silverlight

silverlight — Sat, 26 Dec 2009 05:47:01 +0000

@Rudy
I also want to know.thank you!
regards
silverlight

By: Ning Zhang

Ning Zhang — Sat, 19 Dec 2009 19:04:16 +0000

@Rudy Please see my other replies. The Silverlight Toolkit already has ListBoxDragDropTarget, so you can drag from ListBox. You do need to implement your own Canvas drag drop target container, for now.

By: Ning Zhang

Ning Zhang — Sat, 19 Dec 2009 18:22:28 +0000

@GB Right now SL4 runtime only supports SL plugin as a file drop target, and only exposes drop target properties (AllDrop) and events (DragEnter/Move/Leave, Drop), but not drag source events (GiveFeedback, QueryContinueDrag). It is not fully extensible via IDataObject either. If you can't wait, your best chance for now is to look at the toolkit implementation, which allows drag and drop to and from DataGrid within SL plugin. The code is in DataGridDragDropTarget.cs under source\Controls.Data.Toolkit project. Thanks.

By: GB

GB — Mon, 14 Dec 2009 01:04:46 +0000

hi, i want to know how to implement to drag&drop on datagrid?