Asp.net Mvc Error Handling Tutorial
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Effectively in ASP.NET MVC 10 April 2014Handling Errors Effectively in ASP.NET MVCASP.NET MVC gives you more options in the way that you handle exceptions. Error handling isn't intrinsically exciting,
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but there are many ways of avoiding the classic yellow page of death, even mvc application_error getting ELMAH to manage error handling for you. 79 3 Dino Esposito Years ago, ASP.NET's error handling was one of the major mvc error logging things that made me wonder if ASP.NET MVC could give me something that ASP.NET Web Forms couldn't. Web Forms is based on pages; so if something goes wrong, all that you can do is to http://www.codeproject.com/Articles/850062/Exception-handling-in-ASP-NET-MVC-methods-explaine redirect the user to another page and explain what the error was or just be generically sorry. ASP.NET Web Forms allow you to map an error page for each possible HTTP status code. You control the mapping through the
- Architecture MVC Framework - ASP.NET Forms MVC Framework - First Application MVC Framework - Folders MVC Framework - Models MVC Framework - Controllers MVC Framework - Views MVC Framework - Layouts MVC https://www.tutorialspoint.com/mvc_framework/mvc_framework_exception_handling.htm Framework - Routing Engine MVC Framework - Action Filters MVC Framework - Advanced Example MVC Framework - Ajax Support MVC Framework - Bundling MVC Framework - Exception Handling MVC Framework Useful Resources http://www.dotnetcurry.com/aspnet-mvc/1068/aspnet-mvc-exception-handling MVC Framework - Questions and Answers MVC Framework - Quick Guide MVC Framework - Resources MVC Framework - Discussion Selected Reading Developer's Best Practices Questions and Answers Effective Resume Writing HR Interview Questions asp.net mvc Computer Glossary Who is Who MVC Framework - Exception Handling Advertisements Previous Page Next Page In ASP.NET, error handling is done using the standard try catch approach or using application events. ASP.NET MVC comes with built-in support for exception handling using a feature known as exception filters. We are going to learn two approaches here: one with overriding the onException method and another by defining mvc error handling the HandleError filters. Override OnException method This approach is used when we want to handle all the exceptions across the Action methods at the controller level. To understand this approach, create an MVC application (follow the steps covered in previous chapters). Now add a new Controller class and add the following code which overrides the onException method and explicitly throws an error in our Action method: Now let us create a common View named Error which will be shown to the user when any exception happens in the application. Inside the Views folder, create a new folder called Shared and add a new View named Error. Copy the following code inside the newly created Error.cshtml: If you try to run the application now, it will give the following result. The above code renders the Error View when any exception occurs in any of the action methods within this controller. The advantage of this approach is that multiple actions within the same controller can share this error handling logic. However, the disadvantage is that we cannot use the same error handling logic across multiple controllers. HandleError Attribute The HandleError Attribute is one of the action filt
Interview Q&A .NET Product Reviews Download .NET Magazines .NET Magazines Write For Us About Contact .NET & JavaScript Tools ASP.NET MVC 5 - Handling Exceptions with some simpler ways Posted by: Mahesh Sabnis , on 1/7/2015, in Category ASP.NET MVC Views: 65891 Tweet Abstract: ASP.NET MVC provides various ways of handling exceptions. This article helps you decide which exceptions handling mechanism to choose for your requirements. While developing Line-of-Business (LOB) applications using ASP.NET MVC, we come across various requirements varying from doing Model Validations to handling Exceptions. MVC already provides Action Filter feature for implementing add-on application logic e.g. request Logging, authorization, HandlerError etc. HandlerError is used to handle exceptions while executing action methods. We are habitual to make use of try-catch-finally block to handle exceptions, but in case of ASP.NET MVC, while working with action methods we generally write code to redirect to the Index View using RedirectToAction(“Index”). However what if our code encounters an exception and we need to redirect to the Error View? This may be needed with various action methods across various controllers. In the implementation below, I will demonstrate various ways of handling exceptions. Step 1: Open Visual Studio 2013, (the implementation uses VS 2013 Ultimate with Update 4 although you can very well use the Free Visual Studio Community Edition) and create a new MVC 5 application. Name it as ‘MVC5_Exceptions’. This creates a MVC project with folders for Models, View, App_Data and Controllers etc. The Views folder has a Shared subfolder with Error.cshtml in it. This is the error view with HandleErrorInfo as model class. This class contains parameterized constructor as shown here: public HandleErrorInfo(Exception exception, string controllerName, string actionName); This can be used to pass Exception type, controller and action names to the Error View to display error details. The class also provides properties for Exception, Controller and Action Name. We can make use of these properties to implement logic at view level. (We will anyways see it in the following steps.) Step 2: In the App_Data folder add a new Sql Server Database of the name Application and create an EmployeeInfo table in it: CREATE TABLE [dbo].[EmployeeInfo] ( [EmpNo] INT NOT NULL, [EmpName] VARCHAR (50) NOT NULL, [DeptNam