Add TreeNode in TreeView control
TreeViewAddNode.aspx
<%@ Page Language="C#" %>
<!DOCTYPE html>
<script runat="server">
protected void Button1_Click(object sender, System.EventArgs e)
{
TreeNode treeNode = new TreeNode();
treeNode.Text = TextBox1.Text;
treeNode.NavigateUrl = TextBox2.Text;
TreeView1.FindNode("Home/DataToolBox").ChildNodes.Add(treeNode);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>How to add tree node (TreeNode) in TreeView control programmatically</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h2 style="color:Green">TreeView Example: Add TreeNode</h2>
<asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" />
<asp:TreeView
ID="TreeView1"
runat="server"
DataSourceID="SiteMapDataSource1"
Width="250"
BorderWidth="2"
BorderColor="Crimson"
>
<LeafNodeStyle BackColor="Crimson" ForeColor="LightGoldenrodYellow" />
</asp:TreeView>
<br />
<asp:Label
ID="Label1"
runat="server"
Font-Bold="true"
ForeColor="SeaGreen"
Text="Node Text"
>
</asp:Label>
<asp:TextBox
ID="TextBox1"
runat="server"
BackColor="SeaGreen"
ForeColor="LightGoldenrodYellow"
>
</asp:TextBox>
<br />
<asp:Label
ID="Label2"
runat="server"
Font-Bold="true"
ForeColor="SeaGreen"
Text="Navigate Url"
>
</asp:Label>
<asp:TextBox
ID="TextBox2"
runat="server"
BackColor="SeaGreen"
ForeColor="LightGoldenrodYellow"
>
</asp:TextBox>
<br /><br />
<asp:Button
ID="Button1"
runat="server"
ForeColor="SeaGreen"
Text="Add Node To TreeView"
Height="45"
OnClick="Button1_Click"
Font-Bold="true"
/>
</div>
</form>
</body>
</html>
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