i have action filter changes master/layout page @ runtime based on whether ajax call. fires system.web.httpexception when ajax call. actionfilter works fine webforms engine throw exception razorengine. exception:
the "renderbody" method has not been called layout page "~/views/xxxx/empty.cshtml"
the action filter:
public class ajaxactionfilterattribute : actionfilterattribute { public string masterpage { get; set; } public override void onresultexecuting(resultexecutingcontext filtercontext) { if (filtercontext.httpcontext.request.headers["x-requested-with"] != null && filtercontext.httpcontext.request.headers["x-requested-with"] == "xmlhttprequest") { var viewresult = filtercontext.result viewresult; if (viewresult != null) { viewresult.mastername = masterpage; } } } } my action marked attribute follows:
[ajaxactionfilter(masterpage = "empty")] [acceptverbs(httpverbs.get), actionname("index"), collectionaction] public override actionresult collectionaction() { ... } edit: , of course layout view being empty.cshtml follows:
<html xmlns="http://www.w3.org/1999/xhtml"> <head id="defaultmasterhead"> @rendersection("styles", false) </head> <body> <div> @renderbody() </div> @rendersection("scripts", false) </body> </html> if hit view non-ajax call fine if ajax call throws exception. again, works correctly webforms engine.
can explain might going on here?
tia
try overriding onactionexecuted instead of onresultexecuting:
public class ajaxactionfilterattribute : actionfilterattribute { public string masterpage { get; set; } public override void onactionexecuted(actionexecutedcontext filtercontext) { base.onactionexecuted(filtercontext); var result = filtercontext.result viewresult; if (filtercontext.httpcontext.request.isajaxrequest() && result != null) { result.mastername = masterpage; } } } 
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