调整大小的WriteableBitmap损坏

Question

我有一种调整图像大小的方法。

public static WriteableBitmap ResizedBitmap(BitmapImage imgPhoto, int Width, int Height)
    {
        int sourceWidth = (int)imgPhoto.PixelWidth;
        int sourceHeight = (int)imgPhoto.PixelHeight;
        int destX = 0;
        int destY = 0;

        float nPercent = 0;
        float nPercentW = 0;
        float nPercentH = 0;

        nPercentW = ((float)Width / (float)sourceWidth);
        nPercentH = ((float)Height / (float)sourceHeight);
        if (nPercentH < nPercentW)
        {
            nPercent = nPercentH;
            destX = System.Convert.ToInt16((Width -
                          (sourceWidth * nPercent)) / 2);
        }
        else
        {
            nPercent = nPercentW;
            destY = System.Convert.ToInt16((Height -
                          (sourceHeight * nPercent)) / 2);
        }

        int destWidth = (int)(sourceWidth * nPercent);
        int destHeight = (int)(sourceHeight * nPercent);

        WriteableBitmap bmPhoto = new WriteableBitmap(imgPhoto);
        WriteableBitmap resizedBitmap = bmPhoto.Resize(destWidth, destHeight, WriteableBitmapExtensions.Interpolation.NearestNeighbor);

        return resizedBitmap;
    }

我正在使用WritableBitmapEx库，在调整图像大小后，我使用客户端下面的代码将其转换为字节数组：

using (FileStream stream = openFileDialog.File.OpenRead())
{
    BitmapImage bitmapImage = new BitmapImage();
    bitmapImage.SetSource(stream);
    WriteableBitmap resizedWriteableBitmap = ImageHelper.ResizedBitmap(bitmapImage, 150, 200);
    member_Image.Source = resizedWriteableBitmap;
    memberImageByteArray = resizedWriteableBitmap.ToByteArray();
    fileExtension = fileInfo.Extension;
}

然后我使用BinaryWriter在服务器端将文件写入文件。但是我看不到图像。当我打开文件时，它说文件被破坏了。如果我发送图片阵列而不调整大小没有问题。 WriteableBitmapEx库是否有错误或我的代码有问题？