Asp.net C# Error Trapping
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Page_error Event In Asp.net C#
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 ExceptionUtility (to be put in the App_Code folder) GenericErrorPage.aspx HttpErrorPage.aspx Http404ErrorPage.aspx asp.net error page 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 that you can error messages when you run the example in Visual Studio. In a production environment, this setting would normal
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Asp.net Mvc Error Handling
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Asp.net Error Logging
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 This documentation is archived and is not https://msdn.microsoft.com/en-us/library/bb397417.aspx being maintained. This documentation is archived and is not being maintained. How to: Handle Page-Level Errors Other Versions Visual Studio 2010 .NET Framework 4 Visual Studio 2008 .NET Framework 3.0 Visual Studio 2005 If possible, you should handle errors in Try/Catch blocks within your code, because a problem is more easily corrected where it occurs. If the user can help correct a problem, the page needs to return to the same https://msdn.microsoft.com/en-us/library/ed577840.aspx place so the user has a context for understanding what to do. A page-level handler returns you to the page, but there is no longer anything on the page because instances of controls are not created. To provide the user any information, you must specifically write it to the page. You would probably use a page-level error handler to log unhandled errors or to take the user to a page that can display helpful information. This code example shows a handler for the Error event in an ASP.NET Web page. This handler catches all exceptions that are not already handled within Try/Catch blocks in the page. After you handle an error, you must clear it by calling the ClearError method of the Server object (HttpServerUtility class). Example This handler filters for specific kinds of exceptions. For an ArgumentOutOfRangeException exception, the handler writes some text on the page, provides a link back to the page, logs the error, and notifies system administrators. For an InvalidOperationException exception, the handler simply transfers the exception to the Generic Error Page. For any other kind of exception, the handler does nothing, which allows your site to automatically redirect to the generic page specified in the Web.config file. Your own code would filter for exceptions that are im
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 https://msdn.microsoft.com/en-us/library/aa479319.aspx APIs and reference Dev centers Retired content Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. Web Applications (ASP.NET) ASP.NET Infrastructure Infrastructure Rich Custom Error Handling with ASP.NET Rich Custom Error Handling with ASP.NET Rich Custom Error Handling with ASP.NET The ASP.NET HTTP Runtime The ASP.NET Page Object Model ASP.NET Performance asp.net error Monitoring, and When to Alert Administrators E Pluriblog Unum: Merging RSS Feeds Enterprise Localization Toolkit Finite State Machines, Wizards and the Web Globalization Architecture for ASP.NET One Site, Many Faces The Quest for ASP.NET Scalability Regular Expressions in ASP.NET Rich Custom Error Handling with ASP.NET Search Dynamically for Plug-Ins skmFAQs.NET: An ASP.NET FAQ Application Turn Your Log Files into asp.net c# error Searchable Data Using Regex and the XML Classes Understanding ASP.NET View State Using Visual SourceSafe for ASP.NET--Start to Finish Walkthrough: Tracking Server Progress from an ASP.NET Client Application Watching Your Server Processes TOC Collapse the table of content Expand the table of content This documentation is archived and is not being maintained. This documentation is archived and is not being maintained. Rich Custom Error Handling with ASP.NET By Eli Robillard January 2004 Applies to: Microsoft® ASP.NET Summary: Adding your own custom error handling to your ASP.NET Web applications can ease debugging and improve customer satisfaction. Eli Robillard shows how you can create an error-handling mechanism that shows a friendly face to customers and still provides the detailed technical information developers will need. (19 printed pages) Download the source code for this article. Contents Introduction Errors Raise Exceptions The Exception Class Try...Catch...Finally Page_Error global.asax: Application_Error Rich Custom Error Pages Implementation Introduction The quality of a site should be measured not only by how well it works, but by how gracefully it fails. While developers need