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08/25/2009 at 10:55AM PDT, ID: 24680750
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7.7

Expand Treeview childnodes by clicking on parent node text

Asked by donaldef in Microsoft Visual Basic.Net, .NET, Programming for ASP.NET

Tags: Web Development Treeview VB NET

I am using a sitemap with a treeview that is 3 levels deep.  The treeview is embedded in a master page.  The treeview is set to show 2 levels by default. The user can click on the expansion node indicator to view the third level (childnodes) for that area.   However, I would like for the user to click on the parent node text (next to the expansion node indicator) to view the child nodes.  

In the example below, clicking on the "Message Center" text would show the URL for that selection and also show the childnodes of "View Messages" and "Create Messages". Any help would be appreciated.

> Home

      >> Message Center
            >>> View Messages
            >>> Create Message
      
      >> Account
            >>> Update Profile
            >>> Update Password
            >>> Update Billing


I have had difficulty with 1) looping through the childnodes of the selected parent and 2) expanding the childnodes during the loop process.  Nothing that I am trying seems to work.  I have been putting my code in the master page code behind.

Please note that I am using VB NET.   
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           <asp:TreeView ID="TreeView1" runat="server" 
                DataSourceId="nav1" 
                Nodeindent="10" 
                ShowExpandCollapse="true" 
                ExpandDepth="2"
                Imageset="Arrows" 
                EnableViewState="true"
                PopulateNodesFromClient="False"   >
                <LevelStyles>
                    <asp:TreeNodeStyle ChildNodesPadding="10" 
                        Font-Bold="true" 
                        Font-Size="10pt"
                        ForeColor="black" />
                    <asp:TreeNodeStyle 
                        ChildNodesPadding="5" 
                        Font-Bold="true"
                        Font-Size="10pt" 
                        ForeColor="black" />
                    <asp:TreeNodeStyle  
                        ChildNodesPadding="5"
                        Font-Size="10pt" 
                        ForeColor="DarkBlue" /> 
                    <asp:TreeNodeStyle  
                        ChildNodesPadding="5"
                        Font-Size="8pt" 
                        ForeColor="darkred" />                     
                </LevelStyles>
                <ParentNodeStyle 
                    Font-Bold="False" 
                    ForeColor="Black" />
                <HoverNodeStyle 
                    Font-Underline="True" 
                    ForeColor="#5555DD" />
                <SelectedNodeStyle 
                    Font-Underline="True" 
                    ForeColor="#5555DD" 
                    HorizontalPadding="0px" 
                    VerticalPadding="0px" />
                <RootNodeStyle 
                    ForeColor="Black" />
                <NodeStyle 
                    Font-Names="Verdana" 
                    Font-Size="8pt" 
                    ForeColor="Black" 
                    HorizontalPadding="0px" 
                    NodeSpacing="0px" 
                    VerticalPadding="0px" />
            </asp:TreeView>
[+][-]08/27/09 08:55 AM, ID: 25199670

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[+][-]08/27/09 09:54 AM, ID: 25200338

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About this solution

Zones: Microsoft Visual Basic.Net, .NET, Programming for ASP.NET
Tags: Web Development Treeview VB NET
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Solution Provided By: guru_sami
Participating Experts: 1
Solution Grade: B
 
 
[+][-]08/27/09 09:56 AM, ID: 25200352

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[+][-]08/27/09 10:20 AM, ID: 25200607

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[+][-]08/27/09 10:35 AM, ID: 25200748

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[+][-]08/27/09 10:46 AM, ID: 25200855

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[+][-]08/27/09 10:52 AM, ID: 25200909

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[+][-]08/27/09 11:14 AM, ID: 25201081

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