Hi Wilfred,
Thanks for using Syncfusion products.
You could do so by handling the BeforePopup event associated with the TreeViewAdv.ToolTipControl as shown below
this.treeViewAdv1.ToolTipControl.BeforePopup += new CancelEventHandler (Tooltip_BeforePopup);
private void Tooltip_BeforePopup (object sender, CancelEventArgs args)
{
args.Cancel = true;
}
Please refer to the test sample attached that illustrates this and let me know if this meets your requirements.
Regards,
Deepa.T.S
treeview_tooltip.zip