Mvc Error Handling Web.config
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you're not alone. It's surprisingly difficult to do this correctly, not helped by the fact that some errors are handled by ASP.NET and others by IIS. Ideally (and I expect such is the case with some other frameworks/servers) we would just configure our custom error pages in one place and it would just work, no matter how/where the error was raised. Something like:
404 Page Not Found
I created a new ASP.NET MVC 5 application using the standard template in Visual Studio. If I run the site and try to navigate to a resource that does not exist e.g. /foo/bar, I'll get the standard ASP.NET 404 page with the following information: Server Error in '/' Application. The resource cannot be found. Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /foo/bar Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.33440 Not exactly friendly, is it? In this case the error was raised by ASP.NET MVC because it could not find a matching controller and/or action that matched the specified URL. In order to set up a custom 404 error page add the following to web.config inside30, 2013 by trailmax | 3 Replies It is vital for your application security not to show any internals when error happen. And you should be able to replace all internal error messages to nice user-friendly pages. http://tech.trailmax.info/2013/08/error-handling-in-mvc-and-nice-error-pages/ It is a just nice for users - they are not getting splashes of oil, http://www.c-sharpcorner.com/uploadfile/618722/custom-error-page-in-asp-net-mvc/ when engine is exploded, also another measure to improve site security. There are lot of articles about error handling in ASP.Net MVC, but most of them do not cover the whole range. There is a very good resource on this, and I do recommend reading and understanding that first. With error handling there are a lot of edge cases, mvc error and for every single one of them you need to provide a solution, otherwise your error messages will talk too loud about your implementation and that can lead to security vulnerability. Upd 18/03/2016 There are a ton of similar articles on this topic. Here are some nice ones: Ben Foster - probably this one is the most comprehensive and worth reading first. Mahesh Sabnis Milevis Here is the list of edge cases I came up mvc error handling with: Exception thrown in controller Controller or controller action is not found Page not found, but outside of the MVC pipeline Exception in IIS pipeline Cases when IIS can't handle the request all together. Exception thrown in controller. When exceptions are thrown in your code, most of the time they will be thrown in MVC pipeline and handled by MVC error handling mechanisms. First of all you need enable CustomErrors in web.config:
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Sorry,anerroroccurredwhileprocessingyourrequest.
@Htm