Question

I want to create a custom error page to handle all unhandled exceptions.

I want to redirect to it from the Application_Error(object sender, EventArgs e) method located in Global.asax.cs. How can I show in it some detailed information from the exception which throws the application error?

Answer 1

I’ve done the same thing you are talking about. I created an ErrorPage that displays info to the user. I also created a function that writes the error info into the Event Logs…

For the page, this is what I’m doing. Just put the labels on there somewhere…

protected void Page_Load(object sender, EventArgs e) {     Exception ex = Server.GetLastError().GetBaseException();     this.lblMessage.Text = ex.Message;     this.lblSource.Text = ex.Source;     this.lblStackTrace.Text = ex.StackTrace;     if (AppProperties.AppEnv != AppEnvironment.PROD)     {         this.ErrorDetails.Visible = true;     }     else     {         this.ErrorDetails.Visible = false;     }     Utility.LogError();     Server.ClearError(); } 

This is what the LogError function looks like…

public static void LogError() {     LogError(HttpContext.Current.Server.GetLastError().GetBaseException()); }  public static void LogError(Exception ex) {     EventLog log = new EventLog();     if (ex != null)     {         log.Source = ConfigurationManager.AppSettings['EventLog'].ToString();         StringBuilder sErrorMessage = new StringBuilder();         if (HttpContext.Current.Request != null && HttpContext.Current.Request.Url != null)         {             sErrorMessage.Append(HttpContext.Current.Request.Url.ToString() + System.Environment.NewLine);         }         sErrorMessage.Append(ex.ToString());         log.WriteEntry(sErrorMessage.ToString(), EventLogEntryType.Error);     } }