asp.net uses Global.asax to capture exception errors in the entire solution

   When I was working on a project before, I dealt with this different exception information in each page. One page was counted down, and there were many try{}catch{} statement blocks, which made the whole code structure a bit unsightly.

            I saw a post today about using the global application class to help get exception information, using server.Transfer('''') to specify the page that accepts errors; plus using server.GetLastError() in the accepting error page to get The previous exception source.

 

            The Application_Error function in Global.asax is as follows:

           

[c-sharp]  

 

1. protected void Application_Error(object sender, EventArgs e)  
2.        {  
3.            // Catch all exceptions under the entire solution  
4.            try  
5.            {  
6.                Server.Transfer("~/Error.aspx");  
7.            }  
8.            catch { }  
9.        }   

            The relevant code of the error acceptance page Error.aspx to obtain the exception information is as follows: 

[c-sharp]  

1. Exception ex = Server.GetLastError().GetBaseException();  //Get exception source  
2.                if (ex != null)  
3.                {    
4.                    Response.Write(ex.Message);      
5.                }  
6.                // clear the previous exception  
7.                Server.ClearError();   

            The test exception code in the test page Text.aspx is as follows:

           

[c-sharp]   

1. //Test whether the exception information is caught  
2.    //test1  
3.   //int UserID = Convert.ToInt32(Request["UserID"].ToString());  
4.   
5.   
6.   // test2  
7.   string Name = "aganar";  
8.   
9.   int UID = Convert.ToInt32(Name);