[Solved] RadStyleSheetManager (v 2013.1.417.35) not combining embedded Telerik stylesheets

[Tim]

I have added RadStyleSheetManager to my page to combine all of the embedded CSS emitted for various Telerik controls (menu, grid, combobox, etc.) into a single request.

Here's what the control looks like in the master page:

<telerik:radstylesheetmanager runat="server" EnableStyleSheetCombine="true"></telerik:radstylesheetmanager>

In my Web.config I have these:

<system.web>
    <handlers>
        <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false"/>
    </handlers>
</system.web>

and 

<system.webServer>
    <handlers>
        <add name="Telerik_Web_UI_WebResource_axd" verb="*" preCondition="integratedMode" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource"/>
    </handlers>
</system.webServer>

Unfortunately when I look at HTTP requests in Fiddle or Dev Tools I still see a bunch of individual requests for Telerik control CSS, e.g.:

/WebResource.axd?d=s5NYJBI3nRAFreTQ7udQlKpAm2DSy9JAG88FYDPYUxF9i8rYngTROVT04Kc6cQFbg0elZBZAi-9MOFyZZXrIQPY8qxU7BLpExH2B449zx7DVia8sEcNgsjtoO2898ZLA7Ieljg2&t=635017187260000000

What am I doing wrong?

[Ivan Zhekov]

Hello, Tim.

The requests you are seeing are not necessarily stylesheets. They could be as well other embedded resources such as core scripts (I can think of at least one core asp.net script) and embedded images.

You can check the actual resources being loaded by using the approach explained in this blog post -- http://blogs.telerik.com/blogs/07-03-27/debugging-asp-net-2-0-web-resources-decrypting-the-url-and-getting-the-resource-name.aspx.

Regards,
Ivan Zhekov
Telerik

[Tim]

Hi Ivan,

Thanks for your reply. Actually I checked that the resources were indeed CSS stylesheets by individually opening them in Dev Tools and looking at their contents.

After a few changes to web.config that were seemingly unrelated to RadStyleSheetManager things somehow started working, i.e. the page now loads a single stylesheet with all Telerik CSS jammed together. I'm not sure what was it that fixed the problem but I'm happy as long as it works.

[Ivan Zhekov]

Hi, Tim.

The RadStylesheetManager has a property CombineStyleSheets, which is set to true by default. (That in terms is responsible for the combination of styles).

Anyway, if you experience any other issues with the Stylesheet Manager, or any other control for that matter, do contact us back.

Regards,
Ivan Zhekov
Telerik