Windows Phone 學習 直接保存聯繫人到手機上

  <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <StackPanel>
                <TextBlock>輸入要保存的電話號碼：</TextBlock>
                <TextBox Name="txtPhoneNo">
                    <TextBox.InputScope>
                        <InputScope>
                            <InputScopeName NameValue="NameOrPhoneNumber"/>
                        </InputScope>
                    </TextBox.InputScope>
                </TextBox>
                <Button Content="確定" Click="onOK" HorizontalAlignment="Left"/>
            </StackPanel>
        </Grid>

  public MainPage()
        {
            InitializeComponent();
            MyTask = new SavePhoneNumberTask();
            MyTask.Completed += new EventHandler<TaskEventArgs>(MyTask_Completed);
        }

        void MyTask_Completed(object sender, TaskEventArgs e)
        {
            // 檢測是否出錯
            if (e.Error!= null)
            {
                MessageBox.Show("錯誤：\n" + e.Error.Message);
                return;
            }
            switch (e.TaskResult)
            {
                case TaskResult.Cancel:
                    break;
                case TaskResult.None:
                    break;
                case TaskResult.OK:
                    MessageBox.Show("保存成功。");
                    break;
                default:
                    break;
            }
        }

        private void onOK(object sender, RoutedEventArgs e)
        {
            if (txtPhoneNo.Text != "")
            {
                MyTask.PhoneNumber = txtPhoneNo.Text;
                MyTask.Show();
            }
        }