海洋工作室——網站建設專家：VS.NET – ASP.NET -ToolTip per node in ASP.NET Treeview control

Synopsis:

Microsoft's Treeview Webcontrol does not have a tooltip which works on a per node level. Here are two solutions to the problem.

Solution: The first and easiest method is to put an <acronym> tag around the text in any node for which you want a tooltip:

Me.TreeView1.Nodes(0).Text = "<acronym title=""This is the tooltip"">" & _"This is the node text</acronym>"

Another method is to modify the htc file for the treeview control which should be located in a webctrl_client folder under the wwwroot folder.
Replace:

    if (nodeClass == "parent" && element.getAttribute("showToolTip") != false)        accessAnchor.title = textNode.innerText + " : " + L_strToolTip_Text;

With:

var tooltiptext= el.getAttribute("NodeData");    //if (nodeClass == "parent" && element.getAttribute("showToolTip") != false)        if (tooltiptext != null)        {        accessAnchor.title = tooltiptext;}

With this replacement the nodedata will be displayed a the tooltip.