Application Error Not Catching Exceptions
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Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a how to handle application error in global.asax in mvc community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error is not logged with Application_Error up vote 6 down vote favorite I have an Asp.Net how will you handle application error scenarios in restful web service 4.0 Web Forms application that throws following error certain times “Server Error in ‘/MySiteDev’ Application” . This error comes only at times. And this error is not firing the Application_Error event which is handled in Global.asax. Since this is not firing Application_Error, what all are the other possible places that will have a log of this error event? Anything other than event viewer available? Any way to find out the exceptions
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handled by the ASP.Net framework? Note: customErrors mode="Off". Also runAllManagedModulesForAllRequests="true" UPDATE Reference from How to: Handle Application-Level Errors An error handler that is defined in the Global.asax file will only catch errors that occur during processing of requests by the ASP.NET runtime. For example, it will catch the error if a user requests an .aspx file that does not occur in your application. However, it does not catch the error if a user requests a nonexistent .htm file. For non-ASP.NET errors, you can create a custom handler in Internet Information Services (IIS). The custom handler will also not be called for server-level errors. You cannot directly output error information for requests from the Global.asax file; you must transfer control to another page, typically a Web Forms page. When transferring control to another page, use Transfer method. This preserves the current context so that you can get error information from the GetLastError method. After handling an error, you must clear it by calling the ClearError method of the Server object (HttpServerUtility class). CODE protected void Application_Error(object sender, EventArgs e) { //Get the exception object Exception exception = Server.GetLastError().GetBaseException(); //Get the location of the exception string location = Request.Url.ToString(); if (!String.IsNullOrEmpty(location)) { string[] partsOfLocation = location.Split('/'); if (partsOfLocation != null) { if (partsOfLocation.Lengt
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings web api application_error and policies of this site About Us Learn more about Stack Overflow application_error not firing the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation
Application_error Not Firing Web Api
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; http://stackoverflow.com/questions/14876752/error-is-not-logged-with-application-error it only takes a minute: Sign up Application_Error firing even for handled exceptions up vote 3 down vote favorite I have some code to display a button if a URL exists: try { string dashboardURL = Config.RootUrl + "/Dashboard/Default.aspx"; WebRequest req = WebRequest.Create(dashboardURL); WebResponse response = req.GetResponse(); btnDashboard.Visible = true; } catch (Exception) { btnDashboard.Visible = false; } However, when http://stackoverflow.com/questions/11326192/application-error-firing-even-for-handled-exceptions debugging, req.getResponse() causes Application_Error to fire. I checked the exception being caught here and it is a System.Net.WebException. My understanding was that Application_Error is fired for unhandled exceptions. If I change the code to force an exception as follows: try { string dashboardURL = Config.RootUrl + "/Dashboard/Default.aspx"; WebRequest req = WebRequest.Create(dashboardURL); int j = 0; int i = 1 / j; WebResponse response = req.GetResponse(); btnDashboard.Visible = true; } catch (Exception) { btnDashboard.Visible = false; } then Application_Error is not fired, which is good. Is there something particular about handling errors with GetResponse() that always causes Application_Error to fire, even if the exception is handled? c# exception-handling webforms global-asax application-error share|improve this question edited Sep 28 '15 at 17:27 Mrchief 42.4k978140 asked Jul 4 '12 at 9:25 Andrew Jones 185 are you sure above exception is caught? –Rajesh Subramanian Jul 4 '12 at 9:28 As the name implies 'Application Error' is an error issued at the application level. –akhil Jul 4 '12 at 9:30 Is Config.RootUrl + "/Dashboard/Default.aspx" in the same server/
ASP.NET Community Standup Forums Help Home/ASP.NET Forums/General ASP.NET/State Management/Application_Error - does it catch exceptions from classes? Application_Error - does it catch exceptions from classes? [Answered]RSS 5 replies Last post Sep 24, http://forums.asp.net/t/1474061.aspx?Application_Error+does+it+catch+exceptions+from+classes+ 2009 03:35 PM by sukumarraju ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved Threads Support Options Advanced Search Reply asterix2008 Member 3 Points 36 Posts http://www.wduffy.co.uk/blog/using-application_error-in-asp-net-mvcs-global-asax-to-handle-errors/ Application_Error - does it catch exceptions from classes? Sep 23, 2009 02:40 PM|asterix2008|LINK I've got an Application_Error handler which does work when catching errors from pages. Then I've also got some classes that application error are built in my App_code folder. When I throw an exception from one of the classes, the application stops running -- how do I get Application_Error to catch those exceptions, or -- what's the equivalent of Page_Error when working with a class? Thanks! PS: I'm referring to error handling as described in this article: http://msdn.microsoft.com/en-us/library/aa479319.aspx Error Handling Reply sukumarraju Star 13042 Points 3197 Posts Re: Application_Error how to handle - does it catch exceptions from classes? Sep 23, 2009 04:28 PM|sukumarraju|LINK Application_Error() method in Global.asax is used to catch global exceptions in your app. It is important to distinguish between recoverable errors and un-recoverable errors. In other words 'Exceptions that can be recoverable and continue application execution and Exceptions that can not be recoverable(i.e., kills your application). To handle your class file exceptions, you can use traditional Try...Catch block as shown below. Try { //your c# code that is error prone } Catch(Exception ex) //you can specify exception here. { //out put the exception or the action you want to perform } Refer this article on exception handling best practices Let me know further Queries. Thanks, -- "Mark As Answer" if my reply helped you -- Application Architecture Guide 2.0 My Blog Twitter Reply asterix2008 Member 3 Points 36 Posts Re: Application_Error - does it catch exceptions from classes? Sep 24, 2009 01:37 AM|asterix2008|LINK Thanks Sukumarraju, for the info and the link. I was wondering if it's possible to centrally handle exceptions that occur in the class files (instead of using try..catch blocks)? Reply asterix2008 Member 3 Points 36 Posts Re: Application_Error - does it ca
1, 2011 • (7) ASP.NET MVC's controllers have great error handling capabilities and can be easily extended to cater for application specific requirements. However, many developer don't want to manage errors at a controller level and would rather manage 99 percent of errors from a single location. This allows for a single point of error logging, notification and handling. The Application_Error event within the global.asax is the perfect place for this, but there are a few issues to consider when used in an MVC project. Server.Transfer is not available to serve an error message as it requires a physical file to serve. Your MVC project more than likely doesn't have one of theses as it uses routes, controllers and views. We need to find a workaround for this in order to return suitable response headers. Reponse.Redirect is not suitable as '500: Internal Server Error' and '404: Not Found' pages should serve a suitable response header, not a 301 redirect. Response.Clear() should be called to ensure that any content written to the response stream before the error occurred is removed. Server.ClearError() must be called to stop ASP.NET from serving the yellow screen of death. With these points in mind the following steps can be coded into the Application_Error event for error handling and logging. Get the last error raised. Get the error code to respond with. Log the error (I'm ignoring 404′s). Clear the response stream. Clear the server error. Render the error handling controller without a redirect. Here is the Application_Error code… void Application_Error(object sender, EventArgs e) { var error = Server.GetLastError(); var code = (error is HttpException) ? (error as HttpException).GetHttpCode() : 500; if (code != 404) { // Generate email with error details and send to administrator // I'm using RazorMail which can be downloaded from the Nuget Gallery // I also have an extension method on type Exception that creates a string representation var email = new RazorMailMessage("Website Error"); email.To.Add("errors@wduffy.co.uk"); email.Templates.Add(error.GetAsHtml(new HttpRe