You can register the RadProgressArea control in the Web.config as follows :
- Add the following declaration in the <httpHandlers> section in order to register the needed httpHandler :
|<add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false"/>
- Add the following declaration in the <httpModules> section in order to register the needed httpModule :
|<add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule"/>
After these steps you can implement your Custom Progress Monitoring in order to achieve the desired result.
When you open the RadWindow, it is moved to a specific location, where the RadProgressArea will appear. The area has bigger size and z-index than the upload RadWindow and it hides the upload window.
Could you please check the attached file and let me know whether it fits your requirements?
the Telerik team