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Editorial Team
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Asked: 2026-05-29T04:52:24+00:00

I’ve got a fairly simple treeview where the nodes are PopulateOnDemand and some of

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I’ve got a fairly simple treeview where the nodes are PopulateOnDemand and some of the nodes have a custom ImageUrl. When the tree is rendered, attempting to expand one of the nodes with the custom image results in the Javascript error: orgTree_tvOrgTreet1i’ is undefined.

The line of code that the error is from is a generated script block that looks like

TreeView_PopulateNode(orgTree_tvOrgTree_Data,1,orgTree_tvOrgTreen1,orgTree_tvOrgTreet1,orgTree_tvOrgTreet1i,'t','Node Text','2\\10001','f','','tf')

Is there a way to get around this?

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1 Answer

  1. Editorial Team

    This turns out to be a bug in the TreeView.

    If the node has an ImageURL AND is PopulateOnDemand AND has a SelectAction of None, this bug occurs. Easiest fix is to set the SelectAction to Expand, allowing the user to click the text to expand the tree as well.

    I finally found the answer in this forum post from 2006:

    http://forums.asp.net/t/995686.aspx

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