static void Main(string[] args) { Console.WriteLine("Welcome to the C# Console Connect Sample!\n"); try { //********************************************************************* // setup Microsoft Graph Client for user. //********************************************************************* if (Constants.ClientId != "ENTER_YOUR_CLIENT_ID") { graphClient = AuthenticationHelper.GetAuthenticatedClient(); if (graphClient != null) { bool sendMail = true; while (sendMail) { var user = graphClient.Me.Request().GetAsync().Result; string userId = user.Id; string mailAddress = user.UserPrincipalName; string displayName = user.DisplayName; Console.WriteLine("Hello, " + displayName + ". Would you like to send an email to yourself or someone else?"); Console.WriteLine("Enter the address to which you'd like to send a message. If you enter nothing, the message will go to your address."); string userInputAddress = Console.ReadLine(); string messageAddress = String.IsNullOrEmpty(userInputAddress) ? mailAddress : userInputAddress; MailHelper.ComposeAndSendMailAsync("Welcome to Microsoft Graph development with C# and the Microsoft Graph Connect sample", Constants.EmailContent, messageAddress); Console.WriteLine("\nEmail sent! \n Want to send another message? Type 'y' for yes and any other key to exit."); ConsoleKeyInfo userInputSendMail = Console.ReadKey(); sendMail = (userInputSendMail.KeyChar == 'y') ? true : false; Console.WriteLine(); } } else { Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine("We weren't able to create a GraphServiceClient for you. Please check the output for errors."); Console.ResetColor(); Console.ReadKey(); return; } } else { Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine("You haven't configured a value for ClientId in Constants.cs. Please follow the Readme instructions for configuring this application."); Console.ResetColor(); Console.ReadKey(); return; } } catch (Exception ex) { Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine("Sending an email failed with the following message: {0}", ex.Message); if (ex.InnerException != null) { Console.WriteLine("Error detail: {0}", ex.InnerException.Message); } Console.ResetColor(); Console.ReadKey(); return; } }