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[Tina]

How can i change the "+" (expand collapse icon) in treeview?

[Princy]

Hello,

You can try the following CSS.
CSS:

<style type="text/css">
   .RadTreeView .rtPlus
    {
     background:url("../Images/button_edit_grey.gif") ! important;
    }
</style>

Thanks,
Princy.