Windows Phone 學習 啓動器來啓動短信

   <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <StackPanel>
                <TextBlock>接收人列表：</TextBlock>
                <TextBox Name="txtTo">
                    <TextBox.InputScope>
                        <InputScope>
                            <InputScopeName NameValue="NameOrPhoneNumber"/>
                        </InputScope>
                    </TextBox.InputScope>
                </TextBox>
                <TextBlock Margin="0,15,0,0">內容：</TextBlock>
                <TextBox Name="txtBody" Height="200"/>
                <Button Content="發送短信" Click="OnSendClick"/>
            </StackPanel>
        </Grid>
    </Grid>

        private void OnSendClick(object sender, RoutedEventArgs e)
        {
            // 1、實例化組件
            SmsComposeTask SMS = new SmsComposeTask();
            // 2、設置相關屬性
            SMS.To = txtTo.Text;
            SMS.Body = txtBody.Text;
            // 3、顯示UI界面
            SMS.Show();
        }