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Collapse a pane using Ajax Manager?

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Splitter

This is a migrated thread and some comments may be shown as answers.

Michael Dunbar asked on 17 Jan 2008, 04:46 PM

Hello,

I am attempting to change the state of a pane from expanded to collapsed with the following server side code:

    
            // Collapse the splitter if the selected item has no child 
        
            if (selectedItem.Items.Count == 0) 
        
            { 
        
              rpTopicSubMenuPane.Collapsed = true; 
        
            }

Basically, I have a splitter with 3 panes. The left pane contains a panelbar, which when clicked updates a treeview in the middle pane and the content in the right pane. I do all this using the Ajax manager and it works great. What I now need to do though with the above code is collapse the pane containing the treeview if the panelbar item clicked has no child nodes.

How do I update either the splitter itself or the pane I want to collapse using the Ajax manager? I currently do this for the treeview and the content:

    
            <telerik:RadAjaxManager ID="CksMasterAjaxManager" runat="server" EnablePageHeadUpdate="False"> 
        
            <AjaxSettings> 
        
            <telerik:AjaxSetting AjaxControlID="pbTopicMenu"> 
        
            <UpdatedControls> 
        
            <telerik:AjaxUpdatedControl ControlID="tvSectionTree" LoadingPanelID="lpLoading" /> 
        
            <telerik:AjaxUpdatedControl ControlID="rapContent" LoadingPanelID="lpLoading" /> 
        
            </UpdatedControls> 
        
            </telerik:AjaxSetting> 
        
            <telerik:AjaxSetting AjaxControlID="tvSectionTree"> 
        
            <UpdatedControls> 
        
            <telerik:AjaxUpdatedControl ControlID="rapContent" LoadingPanelID="lpLoading" /> 
        
            </UpdatedControls> 
        
            </telerik:AjaxSetting> 
        
            </AjaxSettings> 
        
            </telerik:RadAjaxManager>

But when I tried updating either the pane or the splitter directly in this manner it didn't like it. I also tried putting the splitter within an update panel, but it didn't seem to like this either. What's the best way to do this (and hoipe it makes sense!).

Thanks,

Michael

16 Answers, 1 is accepted

answered on 18 Jan 2008, 09:30 AM

Collapse_Pane_with_AjaxManager.zip

Hi Michael,

You shouldn't have problems updating the RadSplitter control with a RadAjax manager which has a setting with ControlID property set to the ID of the RadSplitter. I prepared for you a simple project which demonstrates this. When Button1 is clicked the RadSplitter is updated and the RadPane is collapsed server-side.

If you want to update the content of a RadPane you need to wrap its content in a standard asp panel and then update the panel.

More detailed explanation and sample downloadable projects demonstrating different scenarios of updating RadSplitter and RadPane controls with RadAjax manager and RadAjax panel can be found here.

In case this doesn't solve your problem, please send us a simple running application which illustrates it.

Sincerely yours,
Svetlina
the Telerik team

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answered on 18 Feb 2008, 02:38 PM

Ok,

I've solved the issue from my end. It was to do with my logic in populating the content and the page life cycle.

However, in fixing my issues I have found some quite serious problems with the splitter I would like you to resolve asap. I can't use it to it's full potential until you do.

1. the boolean property Collapsed on the pane only allows a setting of false. If you set this to true then it does not work. I'm not impressed that you have released this property in this state.

2. I cannot use the JavaScript client side work around as the splitter has a bug where you need a radsplitbar when using the middle pane. See here for details on this problem: http://www.telerik.com/community/forums/thread/b311D-bbdkbm.aspx

Please fix issue 1 as a priority.

Thanks,

Michael

answered on 13 Mar 2008, 11:31 AM

Hi Michael Dunbar,
We did our best to fix the problem with the Collapsed property of the RadPanes, but could not include the fix in SP2, as it turned out to be more complicated than we expected. In order to make sure that the changes that need to be done to the code will not break existing functionality, we decided it would be better to postpone the fix for the next update of the suite.

I hope you can use the workaround with javascript for the time being. As already mentioned, as soon as we have additional information on the problem, I will inform you.

Regards,
Tsvetie
the Telerik team

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