OnRowDrop e.HtmlElement=="undefined" instead of "" (Empty)

[Noonecares]

Hi everybody,

Iam starting this thread cause I couldnt find any answer to my problem in Google or this forum or somewhere else.
description:
I have got 3 Grids on my Page and want to drag a Item from Grid A and drop it on Grid B:
Grid A: source of drag
Grid B: target of drop
Grid C: test target of drop

My Grid C is an empty Grid without any special settings. Grid A is my source where I have some contact items listed. Grid B is wrapped into a telerik:RadAjaxPanel.
If I drag an item from Grid A and drop it on Grid C the eventargs in the codebehind in OnRowDrop looks like this:

? e
{Telerik.Web.UI.GridDragDropEventArgs}
    base {System.EventArgs}: {Telerik.Web.UI.GridDragDropEventArgs}
    DestDataItem: {Telerik.Web.UI.GridDataItem}
    DestinationGrid: {DotNetNuke.Web.UI.WebControls.DnnGrid}
    DestinationTableView: {Telerik.Web.UI.GridTableView}
    DraggedItems: Count = 1
    DropPosition: Above
    HtmlElement: ""

If I drag an item from Grid A and drop it on Grid B the eventargs looking like:

? e
{Telerik.Web.UI.GridDragDropEventArgs}
    base {System.EventArgs}: {Telerik.Web.UI.GridDragDropEventArgs}
    DestDataItem: null
    DestinationGrid: null
    DestinationTableView: null
    DraggedItems: Count = 1
    DropPosition: Above
    HtmlElement: "undefined"

This is only caused by the telerik:RadAjaxPanel if I remove the ajaxpanel it will work like in the first drag drop.
I alrdy read documentations here on telerik.com and looked into demos but couldnt find any answer to my problem.
I thought something about using the OnDragging method on client side to determine if the destination is wrapped by a telerik:RadAjaxPanel and react on this. For example setting the eventarg properties and filling it with the correct data on client side. (But this is just a guess I couldnt get it working)

It would be awesome if someone could help me with this problem.

best regards, noone.

[Daniel]

Hi,

I attached a simple demo to this post. Please give it a try and let me know what I'm doing wrong as I'm unable to reproduce the problem.

Thanks,
Daniel
the Telerik team

[Noonecares]

Hi Daniel,

thanks for your answer and your demo.
Its seams to be everything ok in your demo.
More information at this point concerning my problem and my infrastructure:
Iam using DNN 6.1.5 with Telerik 2011.3.1115.35.
Iam not using any implemented (easy) way of dragging and dropping items from one grid to another.
Ive got 2 Modules and want to drag an Item from module1 and drop it on module2. This is working cause I throw a InterModuleCommunication and reload the grid on the module2.
As I drop the item on the module2 I try to get all the information from the GridDragDropEventArgs to know what information I have insert in the module2.
If I wrapp the grid B into a telerik:RadAjaxPanel the GridDragDropEventArgs are empty as you can see from my first post.
RaisePostBackEvent("") is not possible to update this Panel. Iam not sure why. So I Think my problem why my GridDragDropEventArgs are empty is comming from the problem that I cant update the Panel.
A question at this point: does any ASP control concerning problems if its being wrapped into a telerik:RadAjaxPanel? cause if I use the ASP:UpdatePanel everything is working fine.
I have got a asp:multiview in the panel and the grid in this multiview. Maybe the multiview is the reason?
I am stuck here I cant see whats going on in that RadAjaxPanel and why its not updating.
Another question: is "RadAJAXPanel.RaisePostBackEvent("")" the same as "aspUpdatePanel.update()"?

thank you for any information. Iam searching for the reason meanwhile and hope I can find any to be able to post it here.

best regards, noone.

[Daniel]

Hi,

It would be hard to determine what causes the problem in your scenario judging by the provided information. My recommendation would be to make a backup copy of your project and start stripping all the unnecessary code/markup/controls until you find the root of the problem.
As to the second question, please examine the Out-of-Panel Update section in our RadAjaxPanel topic.

Regards,
Daniel
the Telerik team