I too had the same problems as you describe, and I noticed that
wasn't alone... No help to find online. I solved it, and after doin
so I sent the following email to:'DevDocs@microsoft.com'
[quoted text, click to view] >
> (subject: Documentation Feedback:HierarchicalDataSourceContro
Class
>
> You seem to have an error in your documentation for the example o
the HierarchicalDataSourceControl class
>
> In the bottom part of the example you state
> "The following code example demonstrates how to declaratively bind
TreeView control to file system data using the FileSystemDataSourc
example.
[quoted text, click to view] >
> And then you erroneously repeat a previously defined class (Publi
Class FileSystemDataSource) instead of showing the declarative synta
and binding
[quoted text, click to view] >
> Note: I had huge problems with getting your example working becaus
of this. I made a search on the internet, and it seems I am not th
only one to have problems. The reason for this is that since th
declarative sample is missing, people set it up themselves. And th
easiest declarative setup is to do as follows
[quoted text, click to view] >
>
> <csp:FileSystemDataSource runat="server
id="ds" /
> <asp:TreeView runat="server
id="CatSelector" DataSourceID="ds" /
>
>
> But, this fails miserably! The first level data gets repeated fo
each folder node, or sometimes worse you get a stack overflo
(depending on the amount of files and folders in the app-root). Btw
if you use a Menu instead of a TreeView it works. And that wa
actually the hint needed to nail this one. I was finally able t
narrow it down to the PopulateNodesFromClient property for th
treeview. PopulateNodesFromClient is true by default, which mean
that the Select will ask for each folder separately (dynamically)
Since the example doesn't use the viewPath for it's select, it alway
starts from the root. Given your example the solution is to explicitl
set PopulateNodesFromClient to false in the declaration, like this
[quoted text, click to view] >
> [code:1:1aa4889fea
> <csp:FileSystemSetDataSource runat="server
id="ds" /
> <asp:TreeView runat="server
id="CatSelector" DataSourceID="ds
PopulateNodesFromClient="false" /
[quoted text, click to view] > [/code:1:1aa4889fea
>
> BTW: It would be nice if you included an example of how to us
viewPath in combination with the select as well. Then it would b
easier to make hierarchical data-sources that allowed for dynamicall
adding nodes (which is after all the default for the TreeVie
control)
[quoted text, click to view] >
This email should explain all you need to get this working
Regards
Ronn
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http://community.ihostasp.ne
