位图的 BinaryFormatter.Deserlize 引发 System.OutOfMemoryException

Question

所以 .. 我正在创建一个 Simple Desktop Viewer 应用程序。

但是当我尝试反序列化通过流发送的图像时，我不断收到此 System.outOfMmemoryException。

发送代码：

 private Image getScreen() {

        Rectangle bound = Screen.PrimaryScreen.Bounds;
        Bitmap ScreenShot = new Bitmap(bound.Width,bound.Height,PixelFormat.Format32bppArgb );
        Graphics image = Graphics.FromImage(ScreenShot);
        image.CopyFromScreen(bound.X,bound.Y,0,0,bound.Size,CopyPixelOperation.SourceCopy);
        return ScreenShot;
    }
    private void SendImage() {
        BinaryFormatter binFormatter = new BinaryFormatter();
        binFormatter.Serialize(stream, getScreen());
    }

请注意，图像是使用一个计时器发送的，该计时器一旦启动就会调用 SendImage()

这是我的接收代码：

 BinaryFormatter binFormatter = new BinaryFormatter();
                Image img = (Image)binFormatter.Deserialize(stream);
                picturebox1.Image=img;

所以..怎么了？

Answer 1

这很可能是由错误使用 Stream 引起的。下面的代码工作正常：

private Image getScreen() {
    Rectangle bound = Screen.PrimaryScreen.Bounds;
    Bitmap ScreenShot = new Bitmap(bound.Width,bound.Height,PixelFormat.Format32bppArgb );
    Graphics image = Graphics.FromImage(ScreenShot);
    image.CopyFromScreen(bound.X,bound.Y,0,0,bound.Size,CopyPixelOperation.SourceCopy);
    return ScreenShot;
}
private void SendImage(Stream stream) {
    BinaryFormatter binFormatter = new BinaryFormatter();
    binFormatter.Serialize(stream, getScreen());
}

void Main()
{
    byte[] bytes = null;
    using (var ms = new MemoryStream()) {
        SendImage(ms);
        bytes = ms.ToArray();
    }

    var receivedStream = new MemoryStream(bytes);
    BinaryFormatter binFormatter = new BinaryFormatter();
    Image img = (Image)binFormatter.Deserialize(receivedStream);
    img.Save("c:\\temp\\test.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
}