ASP. NET Add error log

In the development program, the error log is necessary. Add error logs to use today and log them for easy viewing later

Using the ASP. NET error handling mechanism

Application_Error

Paste the code

1     protected voidApplication_Error (Objectsender, EventArgs e)2         {3C:exception LastErr = Server.GetLastError (). GetBaseException ();//using the GetLastError method of the internal server object, the method returns an exception,4             Try5             {6                 stringPath ="/error/"+ DateTime.Today.ToString ("YYMMDD") +". txt";7                 stringMapPath = HttpContext.Current.Server.MapPath (path);//Specify the physical path corresponding to the virtual path using the MapPath method on the server side8                                                                           //if the path below the file does not exist9                 if(!file.exists (mapPath))Ten                 { OneFile.create (MapPath). Close ();//Create a file below the folder, and close the stream to release A                 } -                 //strength file stream for writing -                 using(StreamWriter writer =file.appendtext (MapPath))//append to file using Apperntext the                 { -Writer. WriteLine ("{0}", DateTime.Now.ToString ()); - writer. WriteLine (Lasterr.Message.ToString ()); -Writer. WriteLine ("-------------------------------"); +Writer. Flush ();//cleans up the buffer and inserts the data into -Writer. Close ();//Close after writing +                 } A             } at             Catch(Exception ex) -             { -                 GotoC; -}

ASP. NET Add error log