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3.c Treeview

The document outlines the use of a TreeView control to perform operations such as displaying checked nodes in a DataList and handling node selection events. It includes a code example in C# demonstrating how to bind checked nodes to a DataList and respond to node selection. The main functionalities are implemented in the Page_Load and event handler methods for button clicks and node selection changes.

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fannyskylark2003
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11 views3 pages

3.c Treeview

The document outlines the use of a TreeView control to perform operations such as displaying checked nodes in a DataList and handling node selection events. It includes a code example in C# demonstrating how to bind checked nodes to a DataList and respond to node selection. The main functionalities are implemented in the Page_Load and event handler methods for button clicks and node selection changes.

Uploaded by

fannyskylark2003
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Aim: Demonstrate the use of TreeView control perform following

operations.

(a)Treeview control and datalist.

(b)Treeview Operations

Design:
Coding:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page


{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void Button1_Click(object sender, EventArgs e)
{
TreeNodeCollection T;
T = TreeView1.CheckedNodes;
DataList1.DataSource = T;
DataList1.DataBind();
DataList1.Visible = true;
}
protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
{
Response.Write("<b>You have selected the option:</b>"+TreeView1.SelectedValue);
}
}
Output:

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