Question

我想将图像保存为SQL数据库中的流，我在Silverlight中这样做：

 OpenFileDialog fd = new OpenFileDialog();
 if (fd.ShowDialog() == true)
 {
     Stream stream = fd.File.OpenRead();
     byte[] binaryImage = new byte[stream.Length];
     stream.Read(binaryImage, 0, (int)stream.Length);

     BitmapImage bitmapImage = new BitmapImage();
     bitmapImage.SetSource(stream);
     _business.PersonalPhoto = binaryImage;
 }

使用WPF，此代码不起作用，fd.File不存在。如何更正此代码以使用WPF

提前致谢。

Answer 1

您可以按照以下更改代码

Microsoft.Win32.OpenFileDialog  fd = new Microsoft.Win32.OpenFileDialog ();
    if (fd.ShowDialog() == true)
    {
        Stream stream = File.OpenRead(fd.FileName);
        byte[] binaryImage = new byte[stream.Length];
        stream.Read(binaryImage, 0, (int)stream.Length);

        BitmapImage bitmapImage = new BitmapImage();
        bitmapImage.SetSource(stream);
        _business.PersonalPhoto = binaryImage;
    }

Answer 2

使用OpenFileDialog的FileName属性：

Stream stream = File.OpenRead(fd.FileName);

Answer 3

最后我解决了这个问题，这里是将数据库中的图像存储为二进制文件的代码：

存储图像：

       Microsoft.Win32.OpenFileDialog fd = new Microsoft.Win32.OpenFileDialog();
        if (fd.ShowDialog() == true)
        {
            ILogo.Source = new BitmapImage(new Uri(fd.FileName));

            Stream stream = File.OpenRead(fd.FileName);
            binaryImage = new byte[stream.Length];
            stream.Read(binaryImage, 0, (int)stream.Length);
        }

        _merchantInfo.Logo = binaryImage;
        _context.SaveChanges();

感谢大家帮助我：）

将图像存储为数据库中的流 - WPF

3 个答案: