Asp Net Error Handling Global Asax
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Asp Net Global Asax Application_beginrequest
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Asp Net Global Asax Session Start
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 ExceptionUtility (to be put in the App_Code folder) global asax events in asp net 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 that you can error messages when you run the example in Visual Studio. In a
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Asp.net Application_error
us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is asp.net error handling best practices a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Catching errors in Global.asax up vote 8 down vote favorite 2 I have the https://msdn.microsoft.com/en-us/library/bb397417.aspx following in my Global.aspx which is meant for handling errors: void Application_Error(object sender, EventArgs e) { Exception exception = Server.GetLastError(); if (exception != null) { //Log if (HttpContext.Current.Server != null) { HttpContext.Current.Server.Transfer("/siteerror.aspx"); } } } This works for the most part, but sometimes does not get into Server.Transfer. For some reason HttpContext.Current.Server is null. I figured out where this happens: when errors occur in a user control and in my http://stackoverflow.com/questions/10061837/catching-errors-in-global-asax business logic classes. Am I missing something here? Thanks c# asp.net error-handling share|improve this question edited Apr 8 '12 at 11:43 svick 123k23194304 asked Apr 8 '12 at 9:36 Peuge 69311330 2 Any reason not using Response.Redirect rather? –leppie Apr 8 '12 at 9:41 1 Where in global.asax is this? –Marc Gravell♦ Apr 8 '12 at 9:42 @leppie I did not add this so not entirely sure why the previous person chose Server.Transfer, it shouldn't make a difference though should it? –Peuge Apr 8 '12 at 9:53 @MarcGravell I have updated the question to reflect this. –Peuge Apr 8 '12 at 9:54 Earlier you use Server.blah - does Server.Transfer(...) not work? (no HttpContext.Current) –Marc Gravell♦ Apr 8 '12 at 9:56 add a comment| 2 Answers 2 active oldest votes up vote 2 down vote Application_Error block can catch exception anytime between application life cycle. Application life cycle is parent of Session life cycle as you can understand there can be many sessions within a single application. Thus you may have HttpContext.Current null at certain errors occured before creating session or after expiring of sessions. If you want to write session specific error redirects you should check for Null of curren
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 http://stackoverflow.com/questions/434859/handling-application-error-in-asp-net-apps-global-asax the company Business Learn more about hiring developers or posting ads with us Stack Overflow http://www.codeproject.com/Articles/600466/ASP-NETplusApplicationplusErrorplusHandling 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 handling Application_Error in ASP.NET app's global.asax up vote 19 down vote favorite 2 I wish to send mail asp net to an administrator when the application crashes. So I simply do this in global.asax: void Application_error(object sender, EventArgs e) { SendMessageToAdministarator(Server.GetLastError().ToString()); } But actually many times Application_Error is called even though the application won't crash. And I wish to send mail to admin ONLY when the application crashed. Also, do I have a simple way to lift the application back on? I'm looking for the simplest solution. asp.net share|improve this question edited Nov asp net global 14 '11 at 14:57 Jason Plank 2,12242338 asked Jan 12 '09 at 9:06 Hanan 6973927 add a comment| 1 Answer 1 active oldest votes up vote 48 down vote accepted What kind of errors are send when the application is not crashed? You could check the type of exception and don't send emails on the exceptions that don't crash the app (for example a redirect can throw the ThreadAbortException which I manually filter in code): protected void Application_Error(Object sender, EventArgs e) { Exception ex = Server.GetLastError(); if (ex is ThreadAbortException) return; Logger.Error(LoggerType.Global, ex, "Exception"); Response.Redirect("unexpectederror.htm"); } You could add a redirect to an error page with a message for the user that an error has occured and some links to relevant pages in the site. This is for the 'lift the application back on' - I hope this is what you wanted. Also you might look into logging with log4net which can also log errors on the server and send emails on errors. share|improve this answer edited Oct 20 '11 at 15:43 Josh Stodola 54.5k33147204 answered Jan 12 '09 at 9:18 rslite 35.6k43444 Thank you very much. What do you mean by "manually filter in code" ? also, one error that I constanly getting is some System.Web.HttpException: File does not exist. at System.Web.Stat
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