Asp Net Mvc 4 Application Error
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Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it asp net mvc 4 razor tutorial only takes a minute: Sign up ASP.NET MVC Custom Error Handling Application_Error Global.asax? up vote 82 down vote favorite 71 I have some basic code to determine errors in my MVC application. Currently in my project I have a controller called Error with action methods HTTPError404(), HTTPError500(), and General(). They all accept a string parameter error. Using or modifying the code asp net mvc 4 database first tutorial below. What is the best/proper way to pass the data to the Error controller for processing? I would like to have a robust solution as possible. protected void Application_Error(object sender, EventArgs e) { Exception exception = Server.GetLastError(); Response.Clear(); HttpException httpException = exception as HttpException; if (httpException != null) { RouteData routeData = new RouteData(); routeData.Values.Add("controller", "Error"); switch (httpException.GetHttpCode()) { case 404: // page not found routeData.Values.Add("action", "HttpError404"); break; case 500: // server error routeData.Values.Add("action", "HttpError500"); break; default: routeData.Values.Add("action", "General"); break; } routeData.Values.Add("error", exception); // clear error on server Server.ClearError(); // at this point how to properly pass route data to error controller? } } c# asp.net asp.net-mvc error-handling user-experience share|improve this question edited Sep 10 '14 at 17:54 Oualid KTATA 52138 asked Jul 23 '09 at 11:07 aherrick 7,6411770115 add a comment| 9 Answers 9 active oldest votes up vote 80 down vote accepted Instead of creating a new route for that, you could just redirect to your controller/action and pass the information via querystring. For instance: protected void Application_Error(object sender, EventArgs e) { Exception exception = Server.GetLastError(); R
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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, powerful search, integrations with Slack and HipChat, Visual Studio integration, https://dusted.codes/demystifying-aspnet-mvc-5-error-pages-and-error-logging API and much more. Custom error pages and global error logging are two elementary and yet very confusing topics in ASP.NET MVC 5. There are numerous ways of implementing error pages in ASP.NET MVC 5 http://devproconnections.com/aspnet-mvc/aspnet-mvc-tutorial-handling-errors-and-exceptions and when you search for advice you will find a dozen different StackOverflow threads, each suggesting a different implementation. Overview What is the goal? Typically good error handling consists of: Human friendly error pages asp net 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 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 asp net mvc 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 requests from different sources, it is almost exclusively used with IIS. It can be extended with HttpModules and HttpHandlers. HttpModules are plugged into the pipeline to process a request at any point of the ASP.NET life cycle. A HttpHandler is responsible for producing a response/output for a request. IIS (Microsoft's web server technology) will create an incoming request for ASP.NET,
DevelopmentASP.NET HTML5 JavaScript Mobile Development Database Development Windows Development Azure Development Visual Studio Advertisement Home > Development > Web Development > ASP.NET MVC > ASP.NET MVC Tutorial: Handling Errors and Exceptions ASP.NET MVC Tutorial: Handling Errors and Exceptions Common practices for handling errors and trapping exceptions Mar 4, 2012 Dino Esposito | Dev Pro EMAIL Tweet Comments 0 Advertisement RELATED: "Using Data Annotations for ASP.NET MVC 3 Input Validation" and "Exploring the Razor Syntax in ASP.NET MVC 3" In ASP.NET MVC, error handling can be split in two parts: handling errors and exceptions that occur within the code and handling exceptions at the framework level. You can easily deal with the first type of exceptions; however, you have to intervene in various places and use different tools to neutralize the impact of route exceptions and HTTP errors. In the end, you gain total control over runtime exceptions by writing error handlers within controllers and at least a global exception handler in global.asax. Let's find out the details and explore common practices for handling exceptions in ASP.NET MVC. Catching Exceptions in Controllers In controllers you write plain code, and in plain code you typically catch exceptions by using try/catch blocks. This approach gives you the most flexibility but at the cost of adding some noise to the code. Having a bunch of try/catch blocks scattered through a single method, though effective, makes reading the code a bit more difficult. The point here is not to question the importance of exception handling but simply to consider whether there's a better way of achieving the same results using easier-to-read code. Conveniently in this regard, Microsoft offers us the OnException overridable method and the HandleError filter attribute. Both methods -- and one method doesn't exclude the other -- allow us to trap any exceptions raised around the controller code without having to write any explicit try/catch blocks. In particular, the OnException method that's defined on the base controller class behaves like a predefined gl