Question

I want to create a small windows application will go automatically every time period to my site and check if its running fine, if it found it down, not working or have an error ‘Examples: 404, network error, connection to db failed’ it will show a message on my screen.

How can i know that there is an error there programmaticly using any .NET language?

Answer 1

It’s pretty easy to do with a WebClient. It would look something like this:

    WebClient client = new WebClient();     try     {         string response =             client.DownloadString('http://www.example.com/tester.cgi');          // We at least got the file back from the server          // You could optionally look at the contents of the file         // for additional error indicators               if (response.Contains('ERROR: Something'))         {             // Handle         }     }     catch (WebException ex)     {         // We couldn't get the file.         // ... handle, depending on the ex         //         // For example, by looking at ex.Status:         switch (ex.Status)         {             case WebExceptionStatus.NameResolutionFailure:                 // ...             break;             // ...         }     } 

You could hook that up to a Timer‘s Tick event or something to periodically make the check.