Silverlight显示本地图片、Stream转Byte数组

转载自:http://www.cnblogs.com/forgetu/archive/2010/08/07/silverlight-load-local-image-stream-to-byte-array.html#commentform

通过 OpenFileDialog 浏览本地图片,然后将图片读取到文件流中,再将文件流转成 BitmapImage 就可以显示本地图片了。代码中ImageFromStream是一个Image控件。

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OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "Image files|*.jpg|All files|*.*" ;
dlg.FilterIndex = 1;
dlg.Multiselect = false ;
bool ? result = dlg.ShowDialog().Value;
 
if (result == true )
{
     FileStream fileStream = dlg.File.OpenRead();
                 
     BitmapImage image = new BitmapImage();
     image.SetSource(fileStream);
 
     ImageFromStream.Source = image;
 
     fileStream.Close();

 

将Stream转成Byte数组

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private byte [] StreamToBytes(Stream stream)
{
     using (MemoryStream ms = new MemoryStream())
     {
         byte [] buffer = new byte [8 * 1024];
         int read = 0;
         while ((read = stream.Read(buffer, 0, buffer.Length)) > 0)
         {
             ms.Write(buffer, 0, read);
         }
 
         return ms.ToArray();
     }
}

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