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.NET Forum / .NET Framework / New Users / May 2004Application_Error in Global.asax
I have an ASP.NET application developed in Visual Studio .NET 2003. The Application_Error in Global.asax never gains control. If the following is in Global.asax and I cause a Divide-by-zero the message never appears. protected void Application_Error( Object sender, EventArgs e ) { Response.Write("Error" ); Server.ClearError( ); } What am I overlooking?  Signature-- Thom Little -- www.tlaNET.net -- Thom Little Associates, Ltd. -- Try naming your handler Application_OnError > I have an ASP.NET application developed in Visual Studio .NET 2003. > [quoted text clipped - 8 lines] > > What am I overlooking? Thanks but that didn't help. I am hoping someone who uses the Global.asax will point out the obvious thing I am overlooking. Signature-- Thom Little -- www.tlaNET.net -- Thom Little Associates, Ltd. -- > Try naming your handler Application_OnError > [quoted text clipped - 11 lines] > > > > What am I overlooking? Hi, Well, looks like I confused VS NET with Web Matrix. Marek > Thanks but that didn't help. > [quoted text clipped - 17 lines] > > > > > > What am I overlooking? Typically, the error is not in the global asax file but in the page. You most likely have hooked up your error event at the page level (I believe vb does that by default, not sure). Have a look at your initializateComponent routine. Look for this line Page.Error += .... This prevents run-time errors from percolating up the stack to the global level. In effect, exceptions are swallowed at the page level if they aren't caught. You can choose to remove it or transfer your code in global asax to the page level error event handler. SignatureRegards, Alvin Bruney [ASP.NET MVP http://mvp.support.microsoft.com/default.aspx] Got tidbits? Get it here... http://tinyurl.com/27cok >I have an ASP.NET application developed in Visual Studio .NET 2003. > [quoted text clipped - 9 lines] > > What am I overlooking? Hi, In C# ASP.NET Web Application project error handling is not done at page level by default. The problem can be that by default several handlers are exposed in Global asax.cs but they are NOT assigned to events. If error handling is supposed to be at the HttpApplication level access property editor for Global.asax.cs[Design] select events tab and assign a proper handler to the Error event. This can be also done manually in InitializeComponent(). regards, Marek > Typically, the error is not in the global asax file but in the page. You > most likely have hooked up your error event at the page level (I believe vb [quoted text clipped - 18 lines] > > > > What am I overlooking? I created a new C# project. I added a button. The button issues a throw ... throw new Exception("AAAAAAAA" ); Global.asax contains one change ... protected void Application_Error(Object sender, EventArgs e) { Response.Write("Application_Error" ); } When I run the application and click the button I get the default error excepting message page. I can find no way to manipulate any event properties in Global.asax using the Designer. Signature-- Thom Little -- www.tlaNET.net -- Thom Little Associates, Ltd. -- > Hi, > [quoted text clipped - 35 lines] > > > > > > What am I overlooking? Hi Thom, I am not sure if this is the real problem you're facing but try the folowing: When editing Global.asax.cs press shift-F7. You should get Global.asax.cs[Design] designer. Then access property editor and assign Application_Error handler to Error event. Marek > I created a new C# project. I added a button. The button issues a throw > ... [quoted text clipped - 55 lines] > > > > > > > > What am I overlooking? But ... the light is so much better over here ... Thanks. That was the problem. I was putting out the message and then it was getting overlaid by the default error page. When I added Context.ClearError() in the Application_Error the default page stopped overlaying my message. Thank you both for the help. BTW I am using Visual Studio .NET 2003 and can find no way to access event assignments from the designer. I did nothing special to make an assignment and the Application_Error gained control as it should. Signature-- Thom Little -- www.tlaNET.net -- Thom Little Associates, Ltd. -- > Hi Thom, > [quoted text clipped - 69 lines] > > > > > > > > > > What am I overlooking? If you don't want the default error page to show up you need to clean up those execution errors. Just add Context.ClearError() call to the error handler. And the error handle has to be named Application_OnError. Jerry > I created a new C# project. I added a button. The button issues a throw > ... [quoted text clipped - 55 lines] > > > > > > > > What am I overlooking? Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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