Asp Net Mvc Custom Error Page
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4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to make custom error pages work in ASP.NET MVC 4 up vote 168 down vote favorite
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82 I want a custom error page shown for 500, 404 and 403. Here's what I have done: Enabled custom errors in the web.config as follows:
it as part of our official documentation for implementing custom error pages, we've decided to sponsor it. Visit elmah.io - Error Management for .NET web applications using ELMAH,
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powerful search, integrations with Slack and HipChat, Visual Studio integration, API and asp net mvc error handling much more. Custom error pages and global error logging are two elementary and yet very confusing topics in mvc custom error page 500 ASP.NET MVC 5. There are numerous ways of implementing error pages in ASP.NET MVC 5 and when you search for advice you will find a dozen different StackOverflow threads, each http://stackoverflow.com/questions/13905164/how-to-make-custom-error-pages-work-in-asp-net-mvc-4 suggesting a different implementation. Overview What is the goal? Typically good error handling consists of: Human friendly error pages Custom error page per error code (e.g.: 404, 403, 500, etc.) Preserving the HTTP error code in the response to avoid search engine indexing Global error logging for unhandled exceptions Error pages and logging in ASP.NET MVC 5 There are https://dusted.codes/demystifying-aspnet-mvc-5-error-pages-and-error-logging many ways of implementing error handling in ASP.NET MVC 5. Usually you will find solutions which involve at least one or a combination of these methods: HandleErrorAttribute Controller.OnException Method Application_Error event customErrors element in web.config httpErrors element in web.config Custom HttpModule All these methods have a historical reason and a justifyable use case. There is no golden solution which works for every application. It is good to know the differences in order to better understand which one is applied best. Before going through each method in more detail I would like to explain some basic fundamentals which will hopefully help in understanding the topic a lot easier. ASP.NET MVC Fundamentals The MVC framework is only a HttpHandler plugged into the ASP.NET pipeline. The easiest way to illustrate this is by opening the Global.asax.cs: public class MvcApplication : System.Web.HttpApplication Navigating to the implementation of HttpApplication will reveal the underlying IHttpHandler and IHttpAsyncHandler interfaces: public class HttpApplication : IComponent, IDisposable, IHttpAsyncHandler, IHttpHandler ASP.NET itself is a larger framework to process incoming requests. Even though it could handle incoming re
the default HandleError Attribute in MVC. In this article, we will see how we can use the HandleError attribute to quickly put together an http://www.devcurry.com/2012/06/aspnet-mvc-handling-exceptions-and-404.html exception handling mechanism that helps hide the ‘dark' underbelly of your application but http://devproconnections.com/development/mvc-routing-iis-seo-and-custom-errors-oh-my 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 asp net 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 asp net mvc 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 the stack trace. Let us fix that withou
DevelopmentASP.NET HTML5 JavaScript Mobile Development Database Development Windows Development Azure Development Visual Studio Advertisement Home > Development > MVC Routing, IIS, SEO, and Custom Errors – Oh My! MVC Routing, IIS, SEO, and Custom Errors – Oh My! Jul 21, 2015 Michael K. Campbell EMAIL Tweet Comments 0 Advertisement For all of its amazing strengths, it’s surprising how tedious it can be to get ASP.NET MVC applications to properly handle custom errors – especially if SEO is a concern. Part of this sadly stems from the fact that ASP.NET applications sometimes end up being subordinate to IIS in terms of error handling. But part of the problem also stems from the MVC routing problem itself. In this post I’ll outline some goals or expectations for error handling, cover some reasons why achieving these goals can sometimes be such a pain with MVC applications, provide some examples of how to get this working, and share a number of links to some great resources that shed additional light on the subject. Caller Beware, Caller Confuse, Caller Inform Handling HTTP errors should, ideally, conform to the age old development mantra that dictates that there are effectively three different ways to handle exceptions when they arise. Either you can do nothing and just let things ‘explode’ – potentially leaving things in an unstable state (i.e., Caller Beware), or, ideally, you’ll handle the error and inform the caller (be it an actual user sitting in front of a browser – or a bot) of the problem and some options to try and remedy the situation as per Caller Inform. Then, anything that falls between those two approaches amounts to Caller Confuse – and usually results from developers ‘bungling’ the error handling routine to some degree or another and making things possibly better or possibly worse than Caller Beware. Out of the box, I’d argue that ASP.NET and IIS both default more or less t