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AnneF

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Ajax collapsible panel not collapsing

I have a serie of collapsible panels in a form, that are collapsed when the form is first open.
I have added a link button to collapse or open the panels.  But for some reason I cannot make the panels collapse or open.

This is the code in my link button:
Protected Sub btnColPanel_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnColPanel.Click
        NVar.bCollapsed = Not NVar.bCollapsed

        If NVar.bCollapsed = True Then
            Me.btnColPanel.Text = "Display assessment information"
            Me.ColApp.Collapsed = True
            Me.ColSaving.Collapsed = True
            Me.ColCE.Collapsed = True
        Else
            Me.btnColPanel.Text = "Hide assessment information"
            Me.ColApp.Collapsed = False
            Me.ColCE.Collapsed = False
            Me.ColSaving.Collapsed = False
        End If
    End Sub
I have tried to set the Causevalidation of the button to true or false, it did not work.
I have moved the second part of the code where the (panel collapsed) to the init, load and prerender of the form, it did not work.

Thanks for your help.

Anne
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thaytu888888
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- Can you debug and tell me what's happen?
Avatar of AnneF
AnneF

ASKER

It looks like it go through the code only once, and the variable changes everytime, the name of the button changes as well but the panel does not collapse/open.
I have difficulty to debug since I have started using the ajax controls as I get the following message:
There is no source code available for the current location, and a button to show disassembly.
Avatar of rajeeshmca
Hello Annef,

Can u please let me know why do u want to do it in the code behind...

why dont u do somethig like the following:

<form id="form1" runat="server">
    <asp:ScriptManager ID="Sc1" runat="server"></asp:ScriptManager>
        <div>
            <asp:LinkButton ID="Lb1" runat="server" Text="Open" >
            </asp:LinkButton>
            <asp:Panel ID="Panel1" runat="server">
            Panel1
            </asp:Panel>
            <cc1:CollapsiblePanelExtender ID="TestColl1" runat="server" TargetControlID="Panel1" CollapseControlID="Lb1" ExpandControlID="Lb1"
            Collapsed="false"  >
            </cc1:CollapsiblePanelExtender>
            <asp:Panel ID="Panel2" runat="server">
            Panel2
            </asp:Panel>
            <cc1:CollapsiblePanelExtender ID="CollapsiblePanelExtender1" runat="server" TargetControlID="Panel2" CollapseControlID="Lb1" ExpandControlID="Lb1"
            Collapsed="false"  >
            </cc1:CollapsiblePanelExtender>
        </div>
    </form>

Avatar of AnneF

ASKER

I copied your code into a test form, however it does not recognise the asp:ScriptManager, message is: script manager is not a known element.

This is the html code I have:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Test.aspx.vb" Inherits="Test_Panel_Test" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>

<form id="form2" runat="server">

    <asp:ScriptManager ID="Sc1" runat="server"/>
        <div>
            <asp:LinkButton ID="Lb1" runat="server" Text="Open" >
            </asp:LinkButton>
            <asp:Panel ID="Panel1" runat="server">
            Panel1
            </asp:Panel>
            <ajaxToolkit:CollapsiblePanelExtender ID="TestColl1" runat="server" TargetControlID="Panel1" CollapseControlID="Lb1" ExpandControlID="Lb1"
            Collapsed="false"  >
            </ajaxToolkit:CollapsiblePanelExtender>
            <asp:Panel ID="Panel2" runat="server">
            Panel2
            </asp:Panel>
            <ajaxToolkit:CollapsiblePanelExtender ID="CollapsiblePanelExtender1" runat="server" TargetControlID="Panel2" CollapseControlID="Lb1" ExpandControlID="Lb1"
            Collapsed="false"  >
            </ajaxToolkit:CollapsiblePanelExtender>
        </div>
    </form>

</body>
</html>
Avatar of AnneF

ASKER

I managed to make the scriptmanager work, and I was able to test your solution, and it worked.

However, I have many collapsible panels, that can be open or closed separately. I want to be able to close/open them one a a time, when entering/viewing data, or all together at once.

In this case, your solution won't work for me, as the CollapseControlID and ExpandControlID is the link button at the top, so I won't be able to close/open one at a time.

Thanks for helping me finding a solution.
Anne
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rajeeshmca
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ASKER

Thank you very much for your help