Asp.net Global.asax Error Handler
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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 This documentation application_error not firing 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 words, all application_error mvc 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("
Global Page Error
\n"); Response.Write( "<Websites Community Support ASP.NET Community Standup ForumsHelp Web Forms:Guidance Videos Samples Forum Books Open Source Getting Started Getting StartedGetting Started with ASP.NET 4.5 Web Forms and Visual
How To Handle Application Error In Global.asax In Mvc
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with PayPal8. Membership and Administration9. URL Routing10. ASP.NET Error HandlingIntroduction to ASP.NET Web FormsCreating a Basic Web Forms Page in Visual Studio 2013Creating ASP.NET Web Projects in Visual Studio 2013Code Editing https://msdn.microsoft.com/en-us/library/24395wz3.aspx ASP.NET Web Forms in Visual Studio 2013ASP.NET Scaffolding in Visual Studio 2013ASP.NET Web Forms (dotnetConf 2014)Using Page Inspector for Visual Studio 2012 in ASP.NET Web FormsVisual Studio 2012 Hands On LabsWhat's New in ASP.NET and Web Development in Visual Studio 2012What's New in Web Forms in ASP.NET 4.5Using Page Inspector in Visual Studio 2012Monitoring and TelemetryRoutingASP.NET 4 - RoutingASP.NET 4 - Defining RoutesASP.NET http://www.asp.net/web-forms/overview/getting-started/getting-started-with-aspnet-45-web-forms/aspnet-error-handling 4 - Constructing URLs from RoutesASP.NET 4 - Accessing URL Parameters in a PageJavaScript and Client FrameworksASP.NET 4 - Microsoft Ajax OverviewASP.NET AJAX Control Toolkit (maintained by DevExpress)Working with Data Getting Started with ASP.NET 4.5 Web FormsModel Binding and Web Forms in Visual Studio 20131. Retrieving and Displaying Data2. Updating, Deleting, and Creating Data3. Sorting, Paging, and Filtering Data4. Integrating JQuery UI Datepicker5. Using Query String Values to Filter Data6. Adding Business Logic LayerASP.NET 4 Web Forms - Validating User Input in a PageASP.NET 4 Web Forms - State ManagementASP.NET Data Access - Recommended ResourcesServer Data ControlsASP.NET 4 Data-Bound ControlsASP.NET 4 Data Source Controls OverviewASP.NET 4.5 Chart ControlRecommended Resources for ASP.NET Data AccessSecurity, Authentication, and Authorization Getting Started with ASP.NET 4.5 Web FormsASP.NET IdentityCreate a secure ASP.NET Web Forms app with user registration, email confirmation and password reset (C#)Create an ASP.NET Web Forms app with SMS Two-Factor Authentication (C#)OWIN and KatanaPerformanceUsing Asynchronous Methods in ASP.NET 4.5[Build 2014] Deep Dive: Improving Performance in Your ASP.NET App (Levi Broderick)ASP.NET 4 - Web Forms Performance OverviewASP.NET 4 - Web Forms Caching OverviewASP.NET 4 - Caching Web Forms Pa
here for a quick overview of the site Help Center Detailed answers to any http://stackoverflow.com/questions/14612888/best-practice-error-handling-in-global-asax questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more http://odetocode.com/articles/69.aspx 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 error handling Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Best practice error handling in Global asax up vote 0 down vote favorite I have code below in global asax now, I want to store exception log in database, handling in asp is this good practice? because if sql error happens there, I want to log it too. So I am thinking changing the code below to write text log instead email, then on sql error, write text log. void Application_Error(object sender, EventArgs e) { // Code that runs when an unhandled error occurs string testEnvironment = ConfigurationSettings.AppSettings["isTestEnvironment"]; if (testEnvironment == "0") { Exception ex = Server.GetLastError(); if (ex is HttpException && ex.InnerException is ViewStateException) { Response.Redirect(Request.Url.AbsoluteUri) return } StringBuilder theBody = new StringBuilder(); theBody.Append("URL: " + Request.Url + "\n"); theBody.Append("Referer: " + Request.ServerVariables["HTTP_REFERER"] + "\n"); theBody.Append("IP: " + Request.ServerVariables["REMOTE_HOST"] + "\n"); theBody.Append("Error Message: " + ex.ToString() + "\n"); if (User.Identity.IsAuthenticated) theBody.Append("User: " + User.Identity.Name + "\n"); else theBody.Append("User is not logged in." + "\n"); theBody.Append("Form Values: " + "\n"); foreach (string s in Request.Form.AllKeys) { if (s != "__VIEWSTATE") theBody.Append(s + ":" + Request.Form[s] + "\n"); } theBody.Append("Session Values: " + "\n"); foreach
This article demonstrates a generic error handler in the global.asax which will be implemented for anyapplication error generated by the web application for whicha custom error handler has not been written. There are three parts to this error handling routine1.It writes the error message to the event log2.It sends the development team an email with the error details3.It has a ‘pretty’ message on the web page, letting the user know that an error occurred and that the development team has been notified. We are going to use the Application_Error event of the global.asax file. The HttpApplication class in the System.Web namespace implements this Error event handler, so make sure to add a reference to this namespace. We also need to add a reference to the System.Diagnosistics namespace --- protected void Application_Error(Object sender, EventArgs e) { // declare an exeception object and get the original exception Exception exception = Server.GetLastError().GetBaseException(); // now we are going to be nice to ourselves and format that stack trace. // It would be easy tojust do a string stackTrace = exception.StackTrace, but after// you’ve tried to read a fewof these spending time formatting it – is time well spent string stackEntryDelimiter = " at "; string topStackEntry = String.Empty; string stackTrace = exception.StackTrace; try { int nextStackEntry = stackTrace.IndexOf(stackEntryDelimiter, stackEntryDelimiter.Length); if(nextStackEntry > 0) { topStackEntry = stackTrace.Substring(0, nextStackEntry); } else { topStackEntry = stackTrace; } } catch(Exception ex) { // if for whatever reason our error handler decides to generate an error – well we just eat it Debug.Write(ex.Message); } try {string eventLogFormat = "Error in {0} User: {1} Error Message: {2} Line: {3}";string[] eventLogArgs = { Request.Url.ToString(), Context.User.Identity.Name, exception.Message, topStackEntry }; string eventLogMessage = String.Format(eventLogFormat, eventLogArgs); EventLog objLog = new EventLog(); objLog.Source = "appname"; // change this to the application name for which you’re trapping errors objLog.WriteEntry(eventLogMessage, EventLogEntryType.Error); // write to the event log } catch(Exception ex) { // just eat it Debug.Write(ex.Message); } try { // Again we want to format our error message in the email string mailFormat = "" + "Error at: {0}
" + "User: