Asp.net Error Handling Library
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resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Retired asp.net error handling best practices content Samples We’re sorry. The content you requested has been removed. You’ll be asp.net application_error auto redirected in 1 second. MSDN Library MSDN Library MSDN Library MSDN Library Design Tools Development Tools and Languages exception handling in asp.net c# Mobile and Embedded Development .NET Development Office development Online Services Open Specifications patterns & practices Servers and Enterprise Development Speech Technologies Web Development Windows Desktop App Development TOC Collapse the table of page level error handling in asp.net example content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Complete Example for Error Handlers Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 This code example includes elements for both page-level and application-level exception handling. Code Example Files The example consists of the following files: Web.config Global.asax Default.aspx
How To Handle Application Error In Global.asax In Mvc
ExceptionUtility (to be put in the App_Code folder) GenericErrorPage.aspx HttpErrorPage.aspx Http404ErrorPage.aspx DefaultRedirectErrorPage.aspx Web.config The following example shows the Web.config file. The customErrors section specifies how to handle errors that occur with file types that are mapped to ASP.NET, such as .aspx, .asmx, and .ashx files. (In IIS 6.0 and in IIS 7.0 in classic mode, static content files such as .html and .jpg files are not mapped to ASP.NET.) The settings in the example customErrors section cause any unhandled HTTP 404 (file not found) errors to be directed to the Http404ErrorPage.aspx file. These HTTP 404 errors would occur if a request were made for an .aspx file, .asmx file, and so on and if the requested file did not exist. All other unhandled errors in ASP.NET files are directed to the DefaultRedirectErrorPage.aspx file. If static content files are not handled by ASP.NET, a request for a nonexistent .html or .jpg file does not cause a redirect to the Http404ErrorPage.aspx file. If you want ASP.NET to handle requests for all file types, you can configure IIS to map file-name extensions to ASP.NET. Note In the example, the mode attribute is set to "On" so
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Retired content Samples We’re
Asp.net Custom Error Page
sorry. The content you requested has been removed. You’ll be auto redirected in asp.net error logging 1 second. MSDN Library MSDN Library MSDN Library MSDN Library Design Tools Development Tools and Languages Mobile and Embedded Development .NET asp.net mvc error handling Development Office development Online Services Open Specifications patterns & practices Servers and Enterprise Development Speech Technologies Web Development Windows Desktop App Development TOC Collapse the table of content Expand the table of content https://msdn.microsoft.com/en-us/library/bb397417.aspx This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. How to: Handle Application-Level Errors Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 .NET Framework 3.0 Visual Studio 2005 This code example shows how to create an error handler in the Global.asax file that will catch all unhandled ASP.NET errors while processing a request — in other https://msdn.microsoft.com/en-us/library/24395wz3.aspx words, all the errors that are not caught with a Try/Catch block or in a page-level error handler. In the example, the handler transfers control to a generic error page named GenericErrorPage.aspx, which interprets the error and displays an appropriate message. Example The following example is from a complete code sample in Complete Example for Error Handlers. Security Note Never set customErrors to Off in your Web.config file if you do not have an Application_Error handler in your Global.asax file. Potentially compromising information about your Web site can be exposed to anyone who can cause an error to occur on your site. C#VB Copy void Application_Error(object sender, EventArgs e) { // Code that runs when an unhandled error occurs // Get the exception object. Exception exc = Server.GetLastError(); // Handle HTTP errors if (exc.GetType() == typeof(HttpException)) { // The Complete Error Handling Example generates // some errors using URLs with "NoCatch" in them; // ignore these here to simulate what would happen // if a global.asax handler were not implemented. if (exc.Message.Contains("NoCatch") || exc.Message.Contains("maxUrlLength")) return; //Redirect HTTP errors to HttpError page Server.Transfer("HttpErrorPage.aspx"); } // For other kinds of errors give the user some information // but stay on the default page Response.Write("
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company http://stackoverflow.com/questions/5522155/c-sharp-and-asp-net-error-handling-best-practices Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation 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 only takes a minute: Sign up C# and asp.net error handling best practices? [duplicate] up vote 0 down vote favorite Possible Duplicate: Best practices for exception management in error handling JAVA or C# I am using class libraries and I try to put maximum code in class libraries so that it can be reused in other projects. Please advice me where I should put try catch blocks in class library functions or in front end forms (aspx pages) ? Kindly also share what are best practices for handling errors. c# .net asp.net c#-3.0 c#-2.0 share|improve this question asked Apr 2 '11 at 8:40 user576510 asp.net error handling 1,77574791 marked as duplicate by Darin Dimitrov, Danny Chen, slugster, Andrew Orsich, Alejandro Apr 2 '11 at 21:29 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. Is some kind of global exception handler not enough? –driushkin Apr 2 '11 at 9:31 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote Answering exactly to what you are asking, try-catch blocks are used to handle exceptions, so you should put them where you will actually be handling the exception. This can be a bit subtle, so let me put some example: imagine you have some method to do something with a file, and the path to the file is given as an argument. There may happen many bad things on that situation: If the file can't be found, or it can't be open (ex: permissions issues, blocked by some procoess, etc), then it's the caller's and not the callee's fault, and the exception produced is already a description of the problem: let it propagate. If the file is not in the expected format (for example, you get some int.Parse() calls failing because there should be a number but there isn't), it's still the caller's fault (it passed y