处理应用程序级错误

Question

我有处理应用程序错误的代码（可以在互联网上找到）。我在事件日志中写道。

void Application_Error(object sender, EventArgs e)
       {
           Exception myError = null;
           if (HttpContext.Current.Server.GetLastError() != null)
           {
               string eventLog = "MySite";
               string eventSource = "www.mysite.com";
               string myErrorMessage = "";
               myError = Server.GetLastError();
               while (myError.InnerException != null)
               {
                   myErrorMessage += "Messagern" +
                      myError.Message.ToString() + "rnrn";
                   myErrorMessage += "Sourcern" +
                       myError.Source + "rnrn";
                   myErrorMessage += "Target sitern" +
                       myError.TargetSite.ToString() + "rnrn";
                   myErrorMessage += "Stack tracern" +
                       myError.StackTrace + "rnrn";
                   myErrorMessage += "ToString()rnrn" +
                       myError.ToString();
                   myError = myError.InnerException;
               }
               if (EventLog.SourceExists(eventSource))
               {
                   EventLog myLog = new EventLog(eventLog);
                   myLog.Source = eventSource;

                   myLog.WriteEntry("An error occurred in the Web application "
                     + eventSource + "rnrn" + myErrorMessage,
                       EventLogEntryType.Error);
               }
           }
        }

这是来自事件日志的行：

Type    Date         Time       Source         Event             Category
Error   03.04.2012 16:44:41 www.mysite.com  0   "An error occurred in the Web application www.mysite.com
"
Error   03.04.2012 16:43:31 www.mysite.com  0   "An error occurred in the Web application www.mysite.com
"
Error   03.04.2012 16:42:56 www.mysite.com  0   "An error occurred in the Web application www.mysite.com
"
Error   03.04.2012 16:42:56 www.mysite.com  0   "An error occurred in the Web application www.mysite.com
"
Error   03.04.2012 16:42:54 www.mysite.com  0   "An error occurred in the Web application www.mysite.com
"
Error   03.04.2012 16:37:27 www.mysite.com  0   "An error occurred in the Web application www.mysite.com

"

正如您所指出的，错误大约每秒发生一次。但是关于一个错误的信息是空的
这个代码出了什么问题
谢谢

Answer 1

问题出在这一行imo

while (myError.InnerException != null)

只有当存在内部异常时，才可以编写错误的详细信息，但这并不总是真正的

你还忘了打

Server.ClearError();

在处理结束时（但我想这是一个选择）