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POBest practice error handling in Global asax
 

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  1. POBest practice error handling in Global asax
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    <p>I have code below in global asax now, I want to store exception log in database, is this good practice? because if sql error happens there, I want to log it too. So I am thinking changing the code below to write text log instead email, then on sql error, write text log. </p> <pre><code>void Application_Error(object sender, EventArgs e) { // Code that runs when an unhandled error occurs string testEnvironment = ConfigurationSettings.AppSettings["isTestEnvironment"]; if (testEnvironment == "0") { Exception ex = Server.GetLastError(); if (ex is HttpException &amp;&amp; ex.InnerException is ViewStateException) { Response.Redirect(Request.Url.AbsoluteUri) return } StringBuilder theBody = new StringBuilder(); theBody.Append("URL: " + Request.Url + "\n"); theBody.Append("Referer: " + Request.ServerVariables["HTTP_REFERER"] + "\n"); theBody.Append("IP: " + Request.ServerVariables["REMOTE_HOST"] + "\n"); theBody.Append("Error Message: " + ex.ToString() + "\n"); if (User.Identity.IsAuthenticated) theBody.Append("User: " + User.Identity.Name + "\n"); else theBody.Append("User is not logged in." + "\n"); theBody.Append("Form Values: " + "\n"); foreach (string s in Request.Form.AllKeys) { if (s != "__VIEWSTATE") theBody.Append(s + ":" + Request.Form[s] + "\n"); } theBody.Append("Session Values: " + "\n"); foreach (string s in Session.Keys) theBody.Append(s + ":" + Session[s] + "\n"); System.Net.Mail.MailMessage email = new System.Net.Mail.MailMessage(); email.IsBodyHtml = false; email.From = new System.Net.Mail.MailAddress("errors@karpach.com", "ErrorManager"); email.To.Add(new System.Net.Mail.MailAddress("errornotification@karpach.com", "Developer")); email.Subject = Request.Url.ToString().Split('/')[2] + " has ASP.NET error"; email.Body = theBody.ToString(); try { System.Net.Mail.SmtpClient emailProvider = new System.Net.Mail.SmtpClient(); emailProvider.Send(email); } catch (Exception anException) { } finally { if (Request.Url.Segments[Request.Url.Segments.Length - 1].ToLower() != "error.aspx") Response.Redirect("~/error.aspx?msg=4"); else { Response.Write(@"We encountered an internal error. We apologize for any inconvenience but know that our staff gets emailed EVERY error that occurs so that we can solve it promptly."); Response.End(); } } } } </code></pre>
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    1. COMy only real suggestion is to log errors to wherever someone will actually read them, wherever that is. At a previous job, we logged things both to file and to the DB, but no developer ever looked at them unless a customer called and complained, so it was all pretty worthless.
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      1. USCodingWithSpike
 

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