Telerik Controls Do Not Work If a Compression Module Is Used in the Project

Environment

Product

Progress® Telerik® UI for ASP.NET AJAX

Description

When working with Telerik UI for ASP.NET AJAX, the Telerik controls are not working if the project or website uses the Compression module.

Cause

The possible reason for this issue is that a double compression of web resources occurs. The web resources requested by the Telerik controls are compressed twice—once by the Script, RadScript, or RadStyleSheet Manager and a second time by the Compression module.

Solution

To solve this issue, skip the compression for the requested resource in the Compression module. If the OutputCompression property of the RadScriptManager or the RadStyleSheetManager is set to Disabled, you can configure the Compression module to compress Telerik.Web.UI.WebResource.axd.

Control	Requested Resources
ScriptManager	WebResource.axd, ScriptResource.axd
RadScriptManager	Telerik.Web.UI.WebResource.axd
RadStyleSheetManager	Telerik.Web.UI.WebResource.axd