Solved

How to get ASP.Net TreeView Child Node Value

Posted on 2014-01-08
2
2,314 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 500 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

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
In threads here at EE, each comment has a unique Identifier (ID). It is easy to get the full path for an ID via the right-click context menu. However, we often want to post a short link within a thread rather than the full link. This article shows a…
Learn how to match and substitute tagged data using PHP regular expressions. Demonstrated on Windows 7, but also applies to other operating systems. Demonstrated technique applies to PHP (all versions) and Firefox, but very similar techniques will w…
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

751 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