Adding nodes programmatically to the TreeView control (C#) : TreeView « Asp Control « ASP.Net

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ASP.Net » Asp Control » TreeView 
Adding nodes programmatically to the TreeView control (C#)

<%@ Page Language="C#" %>

<script runat="server">    
    protected void Button1_Click(object sender, System.EventArgs e)
    {
        TreeView1.ExpandAll();
    }
    
    protected void Button2_Click(object sender, System.EventArgs e)
    {
        TreeView1.CollapseAll();
    }
    
    protected void Button3_Click(object sender, System.EventArgs e)
    {
       TreeNode myNode = new TreeNode();
       myNode.Text = TextBox1.Text;
       myNode.NavigateUrl = TextBox2.Text;
       TreeView1.FindNode("Home/Finance/Markets").ChildNodes.Add(myNode);
    }

</script>


<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>TreeView Control</title>
</head>
<body>
    <form id="Form1" runat="server">
            <asp:Button ID="Button1" 
                        Runat="server" 
                        Text="Expand Nodes" 
                        OnClick="Button1_Click" />
            <asp:Button ID="Button2" 
                        Runat="server" 
                        Text="Collapse Nodes" 
                        OnClick="Button2_Click" /></p>
            <strong>Text of new node:</strong>
            <asp:TextBox ID="TextBox1" runat="server">
            </asp:TextBox>
            <strong>Desination URL of new node:</strong>
            <asp:TextBox ID="TextBox2" Runat="server">
            </asp:TextBox>
            <br />
            <br />
            <asp:Button ID="Button3" Runat="server" Text="Add New Node" 
             OnClick="Button3_Click" />
        <asp:TreeView ID="TreeView1" runat="server" 
         DataSourceId="SiteMapDataSource1">
        </asp:TreeView></p>
        <asp:SiteMapDataSource ID="SiteMapDataSource1" Runat="server" /></p>
    </form>
</body>
</html>

File: Web.sitemap

<?xml version="1.0" encoding="utf-8" ?>
    
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
   
   <siteMapNode title="Home" description="Home Page" url="Default.aspx">
      <siteMapNode title="News" description="The Latest News" url="News.aspx">
         <siteMapNode title="U.S." description="U.S. News" url="News.aspx?cat=us" />
         <siteMapNode title="World" description="World News" url="News.aspx?cat=world" />
         <siteMapNode title="Technology" description="Technology News" url="News.aspx?cat=tech" />
         <siteMapNode title="Sports" description="Sports News" url="News.aspx?cat=sport" />
      </siteMapNode>
      <siteMapNode title="Weather" description="The Latest Weather" url="Weather.aspx" />
   </siteMapNode>
</siteMap>

 
Related examples in the same category
1. A basic TreeView control
2. A TreeView control with the MSDN style applied to it
3. Binding a TreeView control to the Data.xml file
4. Add check boxes to leaf nodes (C#)
5. Add check boxes to leaf nodes (VB)
6. Applying custom images to the TreeView control
7. Expanding and collapsing the nodes of the TreeView control programmatically (C#)
8. Expanding and collapsing the nodes of the TreeView control programmatically (VB)
9. Expanding specific nodes programmatically
10. Expanding nodes programmatically using the Expanded property
11. Displaying database data with a TreeView control.
12. Using Populate On Demand and AJAX
13. Formatting the TreeView Control
14. Using Styles with the TreeView control.
15. Applying styles to different TreeView node levels.
16. Adding nodes programmatically to the TreeView control (VB)
17. Custom TreeView Control
18. Database tree
19. TreeView Populate On Demand
20. Test TreeView
21. TreeView DataBindings
22. Dynamic tree view
23. ParentNodeStyle in a TreeView
24. DirectoryInfo TreeView
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