Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

How to get ASP.Net TreeView Child Node Value

Posted on 2014-01-08
2
Medium Priority
?
2,375 Views
Last Modified: 2014-01-19
Hi, Expert

I need to get selected child node value from TreeView Control through JavaScript
0
Comment
Question by:Asrar Azmi
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 4

Accepted Solution

by:
ravikantninave earned 1500 total points
ID: 39792521
Treeview declaration
    <asp:TreeView ID="TreeView1" Runat="server" DataSourceID="XmlDataSource1" onclick="client_OnTreeNodeChecked();" ShowCheckBoxes="all">
    <DataBindings>
    <asp:TreeNodeBinding DataMember="Category" ValueField="ID" TextField="Name"></asp:TreeNodeBinding>
    <asp:TreeNodeBinding DataMember="Description" ValueField="Value" TextField="Value"></asp:TreeNodeBinding>
    </DataBindings>
    </asp:TreeView>

Open in new window


property onclick="client_OnTreeNodeChecked();" event which actually is the JavaScript function which would accomplish this task.
Javascript

    <script language="javascript" type="text/javascript">
    function client_OnTreeNodeChecked()
    {
    var obj = window.event.srcElement;
    var treeNodeFound = false;
    var checkedState;
    if (obj.tagName == "INPUT" && obj.type == "checkbox") {
    var treeNode = obj;
    checkedState = treeNode.checked;
    do
    {
    obj = obj.parentElement;
    } while (obj.tagName != "TABLE")
    var parentTreeLevel = obj.rows[0].cells.length;
    var parentTreeNode = obj.rows[0].cells[0];
    var tables = obj.parentElement.getElementsByTagName("TABLE");
    var numTables = tables.length
    if (numTables >= 1)
    {
    for (i=0; i < numTables; i++)
    {
    if (tables[i] == obj)
    {
    treeNodeFound = true;
    i++;
    if (i == numTables)
    {
    return;
    }
    }
    if (treeNodeFound == true)
    {
    var childTreeLevel = tables[i].rows[0].cells.length;
    if (childTreeLevel > parentTreeLevel)
    {
    var cell = tables[i].rows[0].cells[childTreeLevel - 1];
    var inputs = cell.getElementsByTagName("INPUT");
    inputs[0].checked = checkedState;
    }
    else
    {
    return;
    }
    }
    }
    }
    }
    }
    </script>

Open in new window

0

Featured Post

Build and deliver software with DevOps

A digital transformation requires faster time to market, shorter software development lifecycles, and the ability to adapt rapidly to changing customer demands. DevOps provides the solution.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Nothing in an HTTP request can be trusted, including HTTP headers and form data.  A form token is a tool that can be used to guard against request forgeries (CSRF).  This article shows an improved approach to form tokens, making it more difficult to…
In this blog, we’ll look at how improvements to Percona XtraDB Cluster improved IST performance.
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…

721 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question