private async void btnContactBySms_Click(object sender, RoutedEventArgs e) { if (contactModel == null) { return; } if (contactModel.fromPhoneNumber != string.Empty && contactModel.toPhoneNumber != string.Empty && contactModel.toUserName != string.Empty && contactModel.taskTitle != string.Empty) { if (flagContactMode == Constants.FlagContactMode.AskTask) { await ContactHelper.ComposeSms(contactModel.toPhoneNumber, Constants.ContactContent.SmsBody_AskTask( contactModel.fromUserName, contactModel.fromPhoneNumber, contactModel.taskTitle)); } else if (flagContactMode == Constants.FlagContactMode.PublishTask) { await ContactHelper.ComposeSms(contactModel.toPhoneNumber, Constants.ContactContent.SmsBody_PublishTask( contactModel.fromUserName, contactModel.taskTitle)); } } }