Asp.net Treeview Control

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I Have 2 frames. In one frame I have add Tree view control and set its property

XML

<asp:TreeView ID="tvOrg" runat="server"  onclick="fnOnClick()" oncontextmenu="ShowTreeviewContextMenu(this, event);"   PopulateNodesFromClient="true" OnTreeNodePopulate="PopulateNode"   ShowLines="true"  ExpandDepth="0" EnableClientScript="true" HoverNodeStyle-Font-Italic="true" HoverNodeStyle-BackColor="Aqua">
                      </asp:TreeView>

on the another frame I have one textbox and one button. when I click on this button . A new node has added in the left frame. But my problem is when I click on this button 2 new nodes have been added in left frame Because "OnTreeNodePopulate" event called automatically .

Could you please help me on this How can I avoid these duplicate records in treeview.

Its an request, please sort out this issue asap.

Posted 6-May-13 1:50am

Member 9947782

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Sukanta Dey · Answer 1 · 2013-05-08T20:25:00

Hi,

Can you try to set PopulateOnDemand property for a node is set to false and check if the node is added twice.

// Create the new
TreeNode NewNode = new TreeNode(row["ProductName"].ToString());

// Set the PopulateOnDemand property to false, because these are leaf nodes and
// do not need to be populated.
NewNode.PopulateOnDemand = false;