Customize System.NullReferenceException: Object reference not set to an instance of an object.

[Anton]

Hello.

I want to customize exception messages when element not found.
For example i want to write an element path.
Is it possible?

[Asta]

Yes, by using try catch

try{
// Some code

                    }

                    catch (NullReferenceException)

                    {

                     s.Write("Element not found"); 

                    }

[Anton]

Hello Asta,
I know this way, but it applicable only for one FindElement.
I want to catch all exceptions.

For example:

AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(
               OnException);

public static void OnException(object sender, UnhandledExceptionEventArgs e)
        {
            Exception exception = (Exception)e.ExceptionObject;
            Console.Error.WriteLine(exception.Message);
            Environment.Exit(1);
        }

[Asta]

There you go...

DoAction(Action action){
try{ action();}
catch{ a.Write("Errror!");}
}

[Test]
public void Add(){
DoAction(Add);
}

 
And google could help you Click Here

[Anton]

Probably did you mean smth like this?

public static void DoAction(Action action)
        {
            try
            {
                action();
            }
            catch(NullReferenceException e)
            {
                Console.WriteLine("adfadfaf");
            }

        }

[Test]
        public void Test0001()
        {
            DoAction(Test001WrongLogin);
         }

[Test]
        public void Test001WrongLogin()
        {
            ActiveBrowser.NavigateTo(Configuration.Instance.Url);
            Find.ByExpression<HtmlInputText>(LoginActions.LoginField).Text = "asd321";
        }

It's work but i need to rewrite all my tests and it's not a global handling. I can also use try{} catch{} in main test but it's not solving my problem.

I'm searching in google but found only Application.ThreadException event wich available only for WebForms.
AppDomain.CurrentDomain.UnhandledException  as i wrote above handle only Gallio(MbUnit) exceptions.

[Asta]

Be smart.. Use google :)

[Anton]

Seriously? )

I'm google it for a 5 hours and i didn't find solutions even for Selenium or another tool.

I'm find some solutions for Nunit using EventListener but i'm using Gallio.

[Asta]

What Gallio have that NUnit don't have?

[Anton]

Asta, I think that it is not place for "holly war".

I have few thousand of tests and Framework written with MbUnit using XML data binding and other feautures.
I thnik swith to NUnit and rewrite framework and tests is not good for first solution.

[Asta]

You can create script whose will refactor the code.