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Question

Environment: VS 2013 in Win 8.1

I tried the sample Store app in "Working with the code examples" (really for beginners as I am).

The code is:

        // Signs the user into their Microsoft account.
        private async void SignIn(object sender, RoutedEventArgs e)
        {
            try
            {
                LiveAuthClient auth = new LiveAuthClient();
                LiveLoginResult loginResult = await auth.LoginAsync(new string[] { "wl.basic" });
                if (loginResult.Status == LiveConnectSessionStatus.Connected)
                    this.infoTextBlock.Text = "Signed in";
            }
            catch (LiveAuthException exception)
            {
                this.infoTextBlock.Text = "Error signing in: " + exception.Message;
            }
        }

At the line .. loginResult = await auth.... I get an exception saying:

"An exception of type 'System.NullReferenceException' occurred in mscorlib.dll but was not handled in user code

Additional information: Object reference not set to an instance of an object."

Note that according to VS-locals the variable 'auth' is NOT null at this point!

What's wrong?

Answer 1

Can you explain on which line the exception is thrown?

---

Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 2

The line

LiveLoginResult loginResult = await auth.LoginAsync(new string[] { "wl.basic" });

throws the exception; as if 'auth' was null, however it is not.

I also tried the similar sample for Windows Phone in the same "Working with the code examples" document; in this case I get the message:

"Microsoft account is experiencing technical problems. Please try again later."