Global.asax Error Handling In Iis7
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Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Custom Error Handling in web.config / asp.net mvc error handling Global.asax not handling non-existant directory up vote 7 down vote favorite 5 Question is: Why is custom Error handling not working for non-existing paths/directories? Updated with fixed code (thanks to everyone for you input): * Updated code for web.config and global.asax *
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Forums Home IIS.NET Forums IIS 7 and Above Configuration & asp.net mvc custom error page Scripting IIS 7 and 404 error handling IIS 7 and 404 error handling [Answered]RSS
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3 replies Last post Feb 23, 2011 03:08 AM by Lloydz ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads http://stackoverflow.com/questions/5664689/custom-error-handling-in-web-config-global-asax-not-handling-non-existant-dire Unanswered Threads Unresolved Threads Advanced Search Reply cicotti 2 Posts IIS 7 and 404 error handling Feb 18, 2011 09:33 AM|cicotti|LINK Guys hi. Recently I migrated a web application from a Windows Server 2003/IIS 6.0 to a brand new Windows Server 2008/IIS 7.0 and after that I noticed https://forums.iis.net/t/next/1175891 that my small snippet (1) located on Web.config file stopped to redirect when folders/files are not found: Snippet 1 [customErrors mode="On" defaultRedirect="~/errors/default.aspx"> [error statusCode="404" redirect="~/errors/page-not-found.aspx"/> [/customErrors> So I updated the snippet (2) on Web.config as below: Snippet 2 [customErrors mode="On" defaultRedirect="~/errors/default.aspx" redirectMode="ResponseRewrite"> [error statusCode="404" redirect="~/errors/page-not-found.aspx"/> [/customErrors> And added to Global.asax the code: void Application_Error(object sender, EventArgs e) { if (Context == null || !Context.IsCustomErrorEnabled) return; Exception exception = Server.GetLastError(); if (exception is HttpException) { int statuscode = ((HttpException) exception).GetHttpCode(); if (statuscode == 404) Server.ClearError(); Response.Clear(); Response.TrySkipIisCustomErrors = true; Response.StatusCode = statuscode; CustomErrorsSection errorSection = (CustomErrorsSection) WebConfigurationManager.GetSection("system.web/customErrors"); if (statuscode == 404) Response.Redirect(errorSection.Errors["404"].Redirect, false); else Response.Redirect(errorSection.DefaultRedirect, false); } } Now my web application is redirecting when an aspx pages isn't found. But, IIS 7.0 still hijacks redirection of folders and non-aspx pages, showing up its default 404 page. How can I set up my ap
October 02, 2009 3:21 PM As mentioned at the end of my previous post on handling errors with ASP.NET, handling "404 Not Found" errors are particularly problematic http://www.andornot.com/blog/post/Handling-404-errors-with-ASPNET.aspx (if you haven't read it yet, please do so). And looking around, the vast majority of information out there on it is not complete, misinformed, or flat-out wrong (but I greatly appreciate all http://www.devcurry.com/2012/06/aspnet-mvc-handling-exceptions-and-404.html efforts!). And I would argue that this is because ASP.NET implementation of 404 error handling is flat-out-wrong. So with my super hero cape on, here I come to wobbly save the day! The typical error handling ASP.NET way to handle 404 errors is to put something like the following in your Web.config:
the default HandleError Attribute in MVC. In this article, we will see how we can use the HandleError attribute to quickly put together an exception handling mechanism that helps hide the ‘dark' underbelly of your application but helps you debug with the same configuration. We will also look at a solution to handle 404 errors gracefully. Overall we try to achieve the following on IIS 7+ Goal 1 - Use MVCs HandleError action filter to take care of Unhandled/Unexpected errors Goal 2- See only user friendly messages at Runtime Goal 3 - See exception stack traces at debug time Goal 4- Manage 404 error with a proper error message Goal 5 - Keep a 404 Response status The HandleError Attribute The HandleError attribute helps mark controller classes for ‘Unhandled Error' exceptions. The HandleErrorAttribute() attribute filter will pipe the Unhandled exceptions to this attribute filter enabling you to take appropriate exception. The attribute filter is put in place by the default MVC template in the Global.asax (or for MVC4 in the App_Start\FilterConfig.cs) by adding the Action filter as follows: public static void RegisterGlobalFilters(GlobalFilterCollection filters) { filters.Add(new HandleErrorAttribute()); } By default, if you turn on CustomErrors, the behavior of the HandleErrorAttribute is to redirect you to the default Error page. Setting up the Custom Errors page Setup of the Custom Errors page is easy. We simply turn on the CustomErrors in the web.config. To Test the setting we throw an exception in the ‘About' action method of the Home Controller public ActionResult About() { ViewBag.Message = "Your app description page."; throw new ApplicationException("Testing default ErrorHandler attribute"); //return View(); } Now when we run the application and click on ‘About' we see the following This is the default output from Errors.cshtml in the Shared folder of a default MVC project. As we can see, it returns a correct 500 status message. At this stage, we have achieved the first and second goals we set out to achieve. However we have lost