Question

我在Image控件中有一个图像，如下所示：

<Image x:name="myImg" Source="Images/MyImg.png" />

如何将此图像保存到图库中，以便我可以通过转到图库文件夹进行查看。

我尝试了不同的代码，但我无法保存。请帮帮我。

修改

我在列表框中控制了图像。我正在使用来自Web服务的IList绑定列表框。

因此，如果用户想要保存图像，则在绑定图像后，可以保存他想要保存的特定图像。

那我怎么能保存那个特定的图像。

提前致谢。

Answer 1

有一篇优秀的MSDN文章描述了这种情况： How to: Encode a JPEG for Windows Phone and Save to the Pictures Library

顺便提一下，它也是在Google和Bing上搜索windows phone save image to media library时的第一个搜索结果链接。

您是否尝试过遵循本指南？如果有，您遇到了什么问题？

保存它的基本代码：

private void btnSave_Click(object sender, RoutedEventArgs e)
{
    // Create a file name for the JPEG file in isolated storage.
    String tempJPEG = "TempJPEG";

    // Create a virtual store and file stream. Check for duplicate tempJPEG files.
    var myStore = IsolatedStorageFile.GetUserStoreForApplication();
    if (myStore.FileExists(tempJPEG))
    {
        myStore.DeleteFile(tempJPEG);
    }

    IsolatedStorageFileStream myFileStream = myStore.CreateFile(tempJPEG);


    // Create a stream out of the sample JPEG file.
    // For [Application Name] in the URI, use the project name that you entered 
    // in the previous steps. Also, TestImage.jpg is an example;
    // you must enter your JPEG file name if it is different.
    StreamResourceInfo sri = null;
    Uri uri = new Uri("[Application Name];component/TestImage.jpg", UriKind.Relative);
    sri = Application.GetResourceStream(uri);

    // Create a new WriteableBitmap object and set it to the JPEG stream.
    BitmapImage bitmap = new BitmapImage();
    bitmap.CreateOptions = BitmapCreateOptions.None;
    bitmap.SetSource(sri.Stream);
    WriteableBitmap wb = new WriteableBitmap(bitmap);

    // Encode the WriteableBitmap object to a JPEG stream.
    wb.SaveJpeg(myFileStream, wb.PixelWidth, wb.PixelHeight, 0, 85);
    myFileStream.Close();

    // Create a new stream from isolated storage, and save the JPEG file to the media library on Windows Phone.
    myFileStream = myStore.OpenFile(tempJPEG, FileMode.Open, FileAccess.Read);

    // Save the image to the camera roll or saved pictures album.
    MediaLibrary library = new MediaLibrary();

    if (radioButtonCameraRoll.IsChecked == true)
    {
        // Save the image to the camera roll album.
        Picture pic = library.SavePictureToCameraRoll("SavedPicture.jpg", myFileStream);
        MessageBox.Show("Image saved to camera roll album");
    }
    else
    {
        // Save the image to the saved pictures album.
        Picture pic = library.SavePicture("SavedPicture.jpg", myFileStream);
        MessageBox.Show("Image saved to saved pictures album");
    }

    myFileStream.Close();
}

在Windows Phone 7中将图像从图像控件保存到图库

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