Or maybe wanged...

- G

I got my PDC DVDs in the mail recently, and as such, I have gotten back into the swing of playing with the new features of ASP.Net.  The problem is, there are a few issues.  Of course there are, and I'm not upset about it... it's expected.  However, I'm starting to slowly go mad, as I just don't know which problems are bugs in the framework, and which problems are bugs in my code.

The most maddening one right now involves the treeview control, which I'm certain must work somewhat, as I've seen a number of people talking about how to modify the default behavior.  Me?  I'd be totally content with the default behavior.

Here's the situation:  I've got a master page, and on that master page I have both a TreeView and a SiteMapPath control.  I've also got a SiteMapDataSource, pointing to the app.sitemap file in the root of my application.  Simple drag & drops, nothing spectacular - that'll come once it all works (hopefully before 2005).  The problem is, I get a JavaScript error every time I try to expand or collapse a branch of the tree.

The error I get is: '_ctl0$tvLeftNav_Data' is undefined

My ASPX source looks like this:

<asp:treeview id=tvLeftNav datasourceid="smdMain" runat="server"
    initialexpanddepth="1" />
<asp:sitemapdatasource id=smdMain runat="server"
    sitemapviewtype="Tree" />

The resulting related hidden input fields look like this:

<INPUT type=hidden name=_ctl0$tvLeftNav_ExpandState value=ecnnnncnn>
<INPUT type=hidden name=_ctl0$tvLeftNav_SelectedNode>
<INPUT type=hidden name=_ctl0$tvLeftNav_PopulateLog>

Sure enough, the _Data field is missing.  So, am I doing something wrong, or is this just the way it is?  Any insight anyone can give would be great... I'm hoping to get past this before frustration gets the best of me, making me wait for Beta 1 before trying again.

- G