图像转换器不工作

Question

任何人都可以解释为什么我收到错误：

A generic error occurred in GDI+

下面是代码：

[ValueConversion(typeof(System.Drawing.Image), typeof(ImageSource))] 
public class ImageConverter : IValueConverter 
{ 
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
    { 
     if (value == null) return null; 

     System.Drawing.Image img = (System.Drawing.Image)value; 
     BitmapImage bitmap = new BitmapImage(); 

     using (MemoryStream ms = new MemoryStream()) 
     { 
      img.Save(ms, ImageFormat.Bmp); 
      ms.Seek(0, SeekOrigin.Begin); 

      bitmap.BeginInit(); 
      bitmap.StreamSource = ms; 
      bitmap.EndInit(); 
     } 
     return bitmap; 
    } 

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) 
    { 
     throw new NotImplementedException(); 
    } 
} 

它是在img.Save(ms, ImageFormat.Bmp)换行。

谢谢。

Answer 1

如果Save方法失败，则应查看传递给该方法的源图像。你如何加载/创建这个图像？也许图像已被丢弃或其内部流被关闭？

看到这个问题和它的接受的答案：Image.Save(..) throws a GDI+ exception because the memory stream is closed