MainActivity.cs

// Client ID
public static string clientId = "2a6ce4df-f26f-4864-bb28-7f806abbcc67";
public static string commonAuthority = "https://login.windows.net/common";

// Redirect URI
public static Uri returnUri = new Uri("http://rememberit-redirect");

// Graph URI
const string graphResourceUri = "https://graph.windows.net";
public static string graphApiVersion = "2013-11-08";

// AuthenticationResult will hold the result after authentication completes
AuthenticationResult authResult = null;