Error handling in asp.net required
to handle any kind of error occurred. We all are using that in one or another scenario. But some errors are there which will occur in some specific scenario in production environment in this case We can’t show our programming errors
to the End user. So we are going
to put a error page over there or whatever best suited as per our requirement. But as a programmer we should know that error so we can track the scenario and we can solve that error or can handle error. In this kind of situation an Error Email comes handy. Whenever any occurs in system it will going
to send error in our email. Here I am going
to write a extension method which will send errors in email. From asp.net 3.5 or higher version of .NET framework its provides a unique way
to extend your classes. Here you can fine more information about extension method. So lets create extension method via implementing a static class like following. I am going
to use same code for sending email via my Gmail account from here. Following is code for that. using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net.Mail;
namespace Experiement
{
public static class MyExtension
{
public static void SendErrorEmail(this Exception ex)
{
MailMessage mailMessage =
new MailMessage(new MailAddress("
[email protected]")
,
new MailAddress("
[email protected]"));
mailMessage.Subject = "Exception Occured in your site";
mailMessage.IsBodyHtml = true;
System.Text.StringBuilder errorMessage =
new System.Text.StringBuilder();
errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>","Exception",ex.Message));
errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>", "Stack Trace", ex.StackTrace));
if (ex.InnerException != null)
{
errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>", " Inner Exception", ex.InnerException.Message));
errorMessage.AppendLine(string.Format("<B>{0}</B>:{1}<BR/>", "Inner Stack Trace", ex.InnerException.StackTrace));
}
mailMessage.Body = errorMessage.ToString();
System.Net.NetworkCredential networkCredentials =
new
System.Net.NetworkCredential("
[email protected]", "password");
SmtpClient smtpClient =
new SmtpClient();
smtpClient.EnableSsl = true;
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = networkCredentials;
smtpClient.Host = "smtp.gmail.com";
smtpClient.Port = 587;
smtpClient.Send(mailMessage);
}
}
}
After creating an extension method let us that extension method
to handle error like following in page load event of page.
using System;
namespace Experiement
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender,System.EventArgs e)
{
try
{
throw
new Exception("My custom Exception");
}
catch (Exception ex)
{
ex.SendErrorEmail();
Response.Write(ex.Message);
}
}
}
}
Now in above code I have generated custom exception for example but in production It can be any Exception. And you can see I have use ex.SendErrorEmail() function in catch block
to send email. That’s it.. Now it will throw exception and you will email in your email box like below.
That’s its. It’s so simple…Stay tuned for more.. Happy programming..
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