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How to change Accordion Pane Header Titles Dynamically

Posted on 2008-09-30
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Last Modified: 2012-05-05
I have a listbox of names in an AJAX Accordion Pane. The first pane's title is "SELECT EMPLOYEE". When they select an employee, i would like to change the title of that pane to listbox1.selectedvalue.tostring.
AccordionPane2.Page.Title = ListBox1.SelectedValue.ToString doesn't seem to work!

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Question by:wrwiii12
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carlnorrbom earned 2000 total points
ID: 22612374
Hi,

Problem is, the accordion pane does not have a title element. What You are accessing in your code is actually the System.Web.UI.Page.Title element, which makes no sence. What You need to do is to add a label for instance to the header template container of the accordion pane and reference that label and update it's text property from code behind in your ListBox.SelectedIndexChanged event. Please refer to the attached code snippet for a working example.

/Carl.
AccordionPage.aspx:
 
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="AccordionPage.aspx.vb" Inherits="AccordionPage" %>
 
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Accordion Page</title>
    <script language="javascript" type="text/javascript">
    </script>
    <style type="text/css">
        .Accordion
        {
            width: 250px;
            background-color: Silver;
            color: Black;
            font-family: Trebuchet MS;
            font-size: 10pt;
            border: solid 1px Black;
        }
        .AccordionPaneHeader 
        {
            background-color: Silver;
            padding: 3px 3px 3px 3px;
            border-top: solid 1px Black;
            border-bottom: solid 1px Black;
        }
        .SelectedAccordionPaneHeader 
        {
            background-color: Gray;
            font-weight: bold;
            padding: 3px 3px 3px 3px;
            border-top: solid 1px Black;
            border-bottom: solid 1px Black;          
        }
        .AccordionPaneContent 
        {
            padding: 3px 3px 3px 3px;
        }
        .ListBox
        {
            width: 180px;
            background-color: Silver;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">        
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
    <div>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" ChildrenAsTriggers="true" UpdateMode="Always">
            <ContentTemplate>
                 <cc1:Accordion ID="Accordion1" FadeTransitions="true" TransitionDuration="250" runat="server" CssClass="Accordion" HeaderCssClass="AccordionPaneHeader" ContentCssClass="AccordionPaneContent" HeaderSelectedCssClass="SelectedAccordionPaneHeader" >
                    <Panes>
                        <cc1:AccordionPane ID="Pane1" runat="server">
                            <Header>
                                <asp:Label ID="lblHeader1" runat="server" Text="SELECT EMPLOYEE" />
                            </Header>
                            <Content>
                                <asp:ListBox ID="ListBox1" runat="server" CssClass="ListBox" AutoPostBack="true">
                                    <asp:ListItem Value="Person One" Text="Person One" />
                                    <asp:ListItem Value="Person Two" Text="Person Two" />
                                    <asp:ListItem Value="Person Three" Text="Person Three" />
                                    <asp:ListItem Value="Person Four" Text="Person Four" />
                                    <asp:ListItem Value="Person Five" Text="Person Five" />
                                </asp:ListBox>
                            </Content>
                        </cc1:AccordionPane>
                        <cc1:AccordionPane ID="Pane2" runat="server">
                            <Header>
                                <asp:Label ID="lblHeader2" runat="server" Text="SELECT LOCATION" />
                            </Header>
                            <Content>
                                <asp:ListBox ID="ListBox2" runat="server" CssClass="ListBox" AutoPostBack="true">
                                    <asp:ListItem Value="Branch Office 1" Text="Branch Office 1" />
                                    <asp:ListItem Value="Branch Office 2" Text="Branch Office 2" />
                                    <asp:ListItem Value="Branch Office 3" Text="Branch Office 3" />
                                    <asp:ListItem Value="Branch Office 4" Text="Branch Office 4" />
                                    <asp:ListItem Value="Branch Office 5" Text="Branch Office 5" />
                                </asp:ListBox>
                            </Content>
                        </cc1:AccordionPane>
                    </Panes>
                </cc1:Accordion>           
            </ContentTemplate>
        </asp:UpdatePanel>
    </div>
    </form>
</body>
</html>
 
AccordionPage.asxp.vb:
 
Partial Class AccordionPage
    Inherits System.Web.UI.Page
 
    Protected Sub ListBox1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
        lblHeader1.Text = ListBox1.SelectedValue.ToString
    End Sub
 
    Protected Sub ListBox2_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox2.SelectedIndexChanged
        lblHeader2.Text = ListBox2.SelectedValue.ToString
    End Sub
End Class

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