I noticed there are two overloads for GetWebResourceUrl, one allows htmlEncode boolean property and one that defaults to htmlEncode = false.  Of course the only public method is the one that sets htmlEncode = false.  So when I put out a web resource in an atlas update panel it renders the link as:

<script src=”WebResource.axd?d=[value]&t=[value]></script>

This is not valid Xml because the & remains unencoded.  However all of the runtimes resource emissions use the internal GetWebResourceUrl method that DOES the html encoding

<script src=”WebResource.axd?d=[value]&amp;t=[value]></script>

The only way I have found to get a web resource url through an update panel is to use "hack" code.

string url = [x].GetWebResourceUrl( ... ).Replace( "&t=", "&amp;t=" )

which is clearly not good.  When I don't use the replace logic on it, the xml is invalid so the xml DOM is empty, therefore the altas client script blanks out the Panel's UI.

Is there another workaround I could do?  I think I could get the internal GetWebResourceUrl method called up through reflection, but I shouldn't have to.

Thanks for responding, but UrlEncode will encode the entire string using % chars.

WebResource.axd?f=asdfasdf&t=00001

Will be encoded as

WebResource.axd%3ff%3dasdfasdf%26t%3d00001

which is not a valid url for my application.

hello.

how about using registerclientresource?