Hi there,

 I have a website where I'm linking a treeview control to a sitemapdatasource in order for the users to navigate the site.

It works perfectly, however when I try validating the page in the W3C validator it displays an error:

<script>
<!--
    function TreeView_PopulateNodeDoCallBack(context,param) {
        WebForm_DoCallback(context.data.treeViewID,param,TreeView_ProcessNodeData,context,TreeView_ProcessNodeData,false);
    }
// -->
</script> 

required attribute "type" not specified...

and it is absolutely right!! I tried searching the forum but did not find any thing usefull. I even added "<xhtmlConformance mode="Transitional"/>" in the web.config file but still nothing.

does anyone know how to fix this??

Thanks, Adam

adam_jcm:

does anyone know how to fix this??

Hi Adam,

Have you checked out the ASP.NET css-friendly control adapters kit? There's a TreeView adapter.

http://www.asp.net/cssadapters/

The markup rendered by the kit's adapters is "designed to work on pages adhering to the XHTML 1.1 Strict or earlier standards. "

Tks for the answer.

I had seen this on the forum search I had done earlier. I'm looking for a simpler solution, some piece of code or something.

It is my opinion that MS should provide XHTML compliant controls with asp.net. I find a least a litle bit strange, that the only control that does not support XHTML transitional is Treeview!!

If that is the case I think I will have to use some other navigational control...

If anybody has other suggestions they will be appreciated....

Hi Adam,

As for this problem, it is like that there is no the "type" attribut in the head section of the script.

You could instead of the "script"(which is deprecated), you need to use like this: <script type="text/javascript">