public static void Run() { try { // Create instance of IEWSClient class by giving credentials IEWSClient client = EWSClient.GetEWSClient("https://exchange.aspose.com/ews/exchange.asmx", "asposeemail.test3", "Aspose2016", ""); string id = client.GetContacts(client.MailboxInfo.ContactsUri)[0].Id.EWSId; // ExStart:FetchContactUsingId Contact fetchedContact = client.GetContact(id); // ExEnd:FetchContactUsingId Console.WriteLine("Name: " + fetchedContact.DisplayName); } catch (Exception ex) { Console.WriteLine(ex.Message); } }