public async Task AddSampleData()
 {
     foreach (var contact in ContactFactory.GetContactList(30))
     {
         await AddContact(contact);
     }
 }
        public async Task AddSampleData()
        {
            var client = await EnsureClientCreated();

            foreach (var contact in ContactFactory.GetContactList(30))
            {
                var newContact = new Microsoft.Office365.Exchange.Contact {
                    GivenName      = contact.GivenName,
                    Surname        = contact.Surname,
                    CompanyName    = contact.CompanyName,
                    EmailAddress1  = contact.EmailAddress1,
                    BusinessPhone1 = contact.BusinessPhone1,
                    HomePhone1     = contact.HomePhone1
                };
                await client.Me.Contacts.AddContactAsync(newContact);
            }
        }