display contents on a textbox on clicking tree node value

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C#

ASP.NET

Javascript

Hi all,

I have a tree view with parent and child nodes. If i click on a nodes, I want the description about that node in a textbox. this should happen for all the nodes. how should I do this.

My code behind I have tried is:

private void fetchtreeview()
       {
           TVContent.Nodes.Clear();
           DataTable topics = dsSOW.Tables["Tableofcontents$"];
           drText = dsSOW.Tables["Tableofcontents" + "$"].Select("Mappingcode is NULL");
           if (drText.Length > 0)
           {
               foreach (DataRow drItem in drText)
               {
                   string ss = drItem.ItemArray[1].ToString();

                   string ss1 = drItem.ItemArray[0].ToString();
                   if (ss1 != string.Empty)
                   {
                       TreeNode node = new TreeNode(ss, ss1);
                       //txtArea.Text = node.Text;
                       node.PopulateOnDemand = false;
                       TVContent.Nodes.Add(node);

                       PopulateNode(node);
                   }
               }
           }
       }
       protected void PopulateNode(TreeNode node1)
       {
           decimal order = Convert.ToDecimal(node1.Value);
           drText = dsSOW.Tables["Tableofcontents" + "$"].Select("Mappingcode='" + order + "'");
            if (drText.Length > 0)
           {
               foreach (DataRow drItem in drText)
                {
                   string ss = drItem.ItemArray[1].ToString();
                   string ss1 = drItem.ItemArray[0].ToString();
                   //decimal order1 = Convert.ToDecimal(ss1.ToString());
                   TreeNode node = new TreeNode(ss, ss1);
                   DataRow[] drText1 = dsSOW.Tables["Content" + "$"].Select("contentcode='" + ss1 + "'");
                   if (drText1.Length > 0)
                   {
                      foreach (DataRow drItem1 in drText1)
                       {
                           txtArea.Text = txtArea.Text + drItem1.ItemArray[1].ToString();
                       }
                   }
                   node1.ChildNodes.Add(node);
                   snode = node.Value;
                   if (snode != string.Empty)
                   {
                       drText = dsSOW.Tables["Tableofcontents$"].Select("Mappingcode='" + snode + "'");
                       if (drText.Length > 0)
                       {
                           PopulateNode(node);
                       }
                   }
               }
             }
           TVContent.Attributes.Add("OnClick", "OnTreeClick(event)");
           //TVContent.Attributes.Add("onmouseover", "showToolTip(event)");
            }

On implementing this code, I am getting the descriptions about the nodes in page load itself.. I want that to appear only after i click the nodes. And i fetch values for description from a dataset.

Please Help.!
Thanku.!