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Closing a CollapsiblePanelExtender from codebehind RSS

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Last post Oct 15, 2009 01:11 PM by celoftis

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Jason241

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Closing a CollapsiblePanelExtender from codebehind

May 23, 2006 01:20 AM|LINK

I have 5 panels where I would like only one open at a time. So I use a postback event to test and close the panel's as follows: Problem is that it has no effect. I used a update panel because surpressing the postback on the extender dosen't allow me to capture the event. Maybe I am going about it wrong.

Protected Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles LinkButton1.Click

Dim x As Integer

For x = 0 To CollapsiblePanelExtender.TargetProperties.Count - 1

If CollapsiblePanelExtender.TargetProperties.Item(x).Collapsed = False Then

CollapsiblePanelExtender.TargetProperties.Item(x).Collapsed = True

End If

Next

UpdatePanel1.Update()

End Sub
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sburke_msft

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Re: Closing a CollapsiblePanelExtender from codebehind

May 23, 2006 07:25 PM|LINK

This might be because the CollapsiblePanel is saving it's state before it closes. What happens if you add this line:

CollapsiblePanelExtender.TargetProperties(x).ClientState = ""

?

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Jason241

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Re: Closing a CollapsiblePanelExtender from codebehind

May 23, 2006 11:08 PM|LINK

Ok I added the above statment. Did not make a difference. When I step through it, it does change the property but reverts back when the page gets loaded. I also tried setting the updatePanel's EnableViewState to False. Same result. The panel that I am expanding get expanded prior to the postback event. Is it possible that it doesn't work due to it occuring to late in that cycle?
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sburke_msft

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Re: Closing a CollapsiblePanelExtender from codebehind

May 24, 2006 12:59 AM|LINK
Does this work without the UpdatePanel?

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Jason241

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Re: Closing a CollapsiblePanelExtender from codebehind

May 24, 2006 03:10 AM|LINK

When I took it out it didn't matter. I originally didn't have it in there.
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joseph111780

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Re: Closing a CollapsiblePanelExtender from codebehind

May 26, 2006 03:46 PM|LINK

Have you found a workaround/resolution yet for this issue?

I've tried both CollapsiblePanelExtender1.TargetProperties(0).Collapsed = True and I've tried CollapsiblePanelExtender1.GetTargetProperties(Panel1).Collapsed = True within my button click event and neither work. When I click the button it appears that it collapses the panel and then immediatly expands it again. I've tried setting the ClientState = "" but that didn't seem to help either.
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joseph111780

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Re: Closing a CollapsiblePanelExtender from codebehind

May 26, 2006 04:51 PM|LINK

Well, after messing a round for a couple more hours I've manage to accomplish what I desired. My button_click event now includes the following code and functions correctly.

If Me.CollapsiblePanelExtender1.GetTargetProperties(Me.Panel1).ClientState = "true" Then

Me.CollapsiblePanelExtender1.GetTargetProperties(Me.Panel1).Collapsed = False

Me.CollapsiblePanelExtender1.GetTargetProperties(Me.Panel1).ClientState = "false"

Else

Me.CollapsiblePanelExtender1.GetTargetProperties(Me.Panel1).Collapsed = True

Me.CollapsiblePanelExtender1.GetTargetProperties(Me.Panel1).ClientState = "true"

End If
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PureWeen

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Re: Closing a CollapsiblePanelExtender from codebehind

Nov 08, 2006 06:54 AM|LINK

alright so now how does this work?

it appears now that the AjaxControlToolkit.CollapsiblePanelExtender no longer has this property exposed in the code behind
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demwiz

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Re: Closing a CollapsiblePanelExtender from codebehind

Nov 08, 2006 11:41 AM|LINK
Here's an example of how I've been trying to do it, maybe it will work for you. Unfortunately, although it compiles and seems to run it doesn't actually seem to work for me. In my case I'm trying to force the category to expand when a user clicks a command button to add an item to the category.

My CollapsiblePanelExtender is defined in the ASP page like this:
```
<ajaxToolkit:CollapsiblePanelExtender ID="cpeCategory" runat="server" TargetControlID="CategoryContentPanel"
        Collapsed="true" ExpandControlID="CategoryToggleImage" CollapseControlID="CategoryToggleImage"
        ExpandDirection="Vertical" ImageControlID="CategoryToggleImage" ExpandedImage="~/images/expand.gif"
        CollapsedImage="~/images/collapse.gif" SuppressPostBack="true" />
```
And my code-behind (triggered on a LinkButton) is defined like this:
```
protected void Category_Command(object sender, FormViewCommandEventArgs e)
{
    if (e.CommandName == "AddItem")
    {
        cpeCategory.Collapsed = false;
        cpeCategory.ClientState = false.ToString().ToLower();
        //Other processing here..
    }
}
```
I've tried playing around with doing the ClientState set before, after, and both before and after setting the Collapsed property and it didn't make an impact. I've also tried doing this via javascript but haven't had much success that direction since I'm not very familiar with it.

Hopefully this code-example answers your question, and hopefully somebody else can point out what I'm doing wrong?
CollapsiblePanel CollapsiblePanelExtender Behavior clientstate properties persist postback
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David Anson

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Re: Closing a CollapsiblePanelExtender from codebehind

Nov 16, 2006 04:00 PM|LINK
I think this is work item 5688.

http://dlaa.me/
http://blogs.msdn.com/b/delay/

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