照片选择与拍照

public partial class PhontosAndCameras : PhoneApplicationPage     {         CameraCaptureTask camera=new CameraCaptureTask();         PhotoChooserTask photo=new PhotoChooserTask();          public PhontosAndCameras()         {             InitializeComponent();                          camera.Completed += new EventHandler<PhotoResult>(photo_Completed);             photo.Completed += new EventHandler<PhotoResult>(photo_Completed);         }          void photo_Completed(object sender, PhotoResult e)         {             BitmapImage bitmap = new BitmapImage();             bitmap.SetSource(e.ChosenPhoto);             p_w_picpath2.Source = bitmap;             path.Text = e.OriginalFileName;         }            private void Button_Click(object sender, RoutedEventArgs e)         {             camera.Show();         }          private void Button_Click_1(object sender, RoutedEventArgs e)         {             photo.ShowCamera = true;             photo.Show();         }     } 

<Grid x:Name="LayoutRoot" Background="Transparent">         <Grid.RowDefinitions>             <RowDefinition Height="Auto"/>             <RowDefinition Height="Auto"/>             <RowDefinition Height="Auto"/>             <RowDefinition Height="Auto"/>         </Grid.RowDefinitions>         <TextBlock  Name="path" Text="显示路径"></TextBlock>         <Image  Name="p_w_picpath2" Grid.Row="1" ></Image>         <Button Content="拍照" Grid.Row="2" Width="200" Click="Button_Click"></Button>         <Button Content="选择照片" Grid.Row="3" Width="200" Click="Button_Click_1"></Button>     </Grid>