The XmlHttpPanel uses ASP.NET Callback mechanism to update its content. How the XmlHttpPanel will behave in such scenario (when app_offline.html is present in the root directory) will entirely depend on the ASP.NET Callback mechanism. The callback is initiated using the WebForm_DoCallback method
I tried several approaches to track whether the application is offline, in the code behind, but to no avail.
Here is what I tried:
sender, Telerik.Web.UI.RadXmlHttpPanelEventArgs e)
Response.StatusCode = 404;
(Response.StatusCode != 200)
I will continue investigating the issue, and if anything comes up I will follow-up in this thread. If you find a solution, could you please share it with us? I am sure it will be of help to other members of the community.
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