將圖像從一個頁面傳遞到另一個Windows Phone 7

Question

我試圖將一張圖像控件中的圖像傳遞到另一頁面。 例如，我在Page1.xaml中有一個名爲「image1」的圖像控件，我希望「image1」中顯示的圖像可以通過/顯示在Page2.xaml ink canvas中。 你能幫我解決這個問題嗎？ 謝謝。

Answer 1

第一頁將圖像保存爲獨立存儲作爲文件'photo.jpg'。第二頁閱讀。

第1頁：

public partial class Page1 : PhoneApplicationPage 
{ 
    PhotoChooserTask PhotoChooser; 
    int ImageWidth, ImageHeight; 
    // Constructor 
    public Page1() 
    { 
     InitializeComponent(); 

     ImageWidth = (int)PageImage.Width; 
     ImageHeight = (int)PageImage.Height; 

     PhotoChooser = new PhotoChooserTask(); 
     PhotoChooser.PixelWidth = ImageWidth; 
     PhotoChooser.PixelHeight = ImageHeight; 
     PhotoChooser.ShowCamera = true; 

     PhotoChooser.Completed += new EventHandler<PhotoResult>(PhotoChooser_Completed); 
    } 

    void PhotoChooser_Completed(object sender, PhotoResult e) 
    { 
     if (e.TaskResult == TaskResult.OK) 
     { 
      IsolatedStorageFile Store = IsolatedStorageFile.GetUserStoreForApplication(); 
      IsolatedStorageFileStream Stream = new IsolatedStorageFileStream("photo.jpg", FileMode.Create, FileAccess.Write, Store); 

      WriteableBitmap myImage = new WriteableBitmap(ImageWidth, ImageHeight); 
      myImage.SetSource(e.ChosenPhoto); 
      PageImage.Source = myImage; 
      PageImage.InvalidateArrange(); 
      myImage.SaveJpeg(Stream, ImageWidth, ImageHeight, 0, 100); 

      Stream.Close(); 
     } 
    } 

    protected override void OnNavigatedTo(NavigationEventArgs e) 
    { 
     base.OnNavigatedTo(e); 

     if (IsolatedStorageFile.GetUserStoreForApplication().FileExists("photo.jpg")) 
     { 
      IsolatedStorageFile Store = IsolatedStorageFile.GetUserStoreForApplication(); 
      IsolatedStorageFileStream Stream = new IsolatedStorageFileStream("photo.jpg", FileMode.Open, FileAccess.Read, Store); 

      WriteableBitmap myImage = new WriteableBitmap(ImageWidth, ImageHeight); 
      myImage.LoadJpeg(Stream); 

      PageImage.Source = myImage; 
      PageImage.InvalidateArrange(); 
      Stream.Close(); 
     } 
    } 

    private void ToPage2Button_Click(object sender, System.Windows.RoutedEventArgs e) 
    { 
     NavigationService.Navigate(new Uri("/Page2.xaml", UriKind.Relative)); 
    } 

    private void LoadButton_Click(object sender, System.Windows.RoutedEventArgs e) 
    { 
     PhotoChooser.Show(); 
    } 
} 

第2頁：

public partial class Page2 : PhoneApplicationPage 
{ 
    int ImageWidth, ImageHeight; 

    public Page2() 
    { 
     InitializeComponent(); 

     ImageWidth = (int)PageImage.Width; 
     ImageHeight = (int)PageImage.Height; 
    } 

    private void BackButton_Click(object sender, System.Windows.RoutedEventArgs e) 
    { 
     NavigationService.GoBack(); 
    } 

    protected override void OnNavigatedTo(NavigationEventArgs e) 
    { 
     base.OnNavigatedTo(e); 

     if (IsolatedStorageFile.GetUserStoreForApplication().FileExists("photo.jpg")) 
     { 
      IsolatedStorageFile Store = IsolatedStorageFile.GetUserStoreForApplication(); 
      IsolatedStorageFileStream Stream = new IsolatedStorageFileStream("photo.jpg", FileMode.Open, FileAccess.Read, Store); 

      WriteableBitmap myImage = new WriteableBitmap(ImageWidth, ImageHeight); 
      myImage.LoadJpeg(Stream); 

      PageImage.Source = myImage; 
      PageImage.InvalidateArrange(); 
      Stream.Close(); 
     } 
    } 
}