C#加载JPG文件，提取BitmapImage

Question

我正在尝试从 JPG 中提取 BitmapImage。这是我的代码:

FileStream fIn = new FileStream(sourceFileName, FileMode.Open); // source JPG
Bitmap dImg = new Bitmap(fIn);
MemoryStream ms = new MemoryStream();
dImg.Save(ms, ImageFormat.Jpeg);
image = new BitmapImage();
image.BeginInit();
image.StreamSource = new MemoryStream(ms.ToArray());
image.EndInit();
ms.Close();

image 返回一个 0 × 0 图像，这当然意味着它不起作用。我该怎么做？

Answer 1

试试这个:

public void Load(string fileName) 
{

    using(Stream BitmapStream = System.IO.File.Open(fileName,System.IO.FileMode.Open ))
    {
         Image img = Image.FromStream(BitmapStream);

         mBitmap=new Bitmap(img);
         //...do whatever
    }
}

或者你可以这样做(source):

Bitmap myBmp = Bitmap.FromFile("path here");