asp.net c#实现图片以二进制流输出的两种方法

笒羽

方法一：

1. System.IO.MemoryStream ms = new System.IO.MemoryStream();
   
2. System.IO.Stream str = new FileUpload().PostedFile.InputStream;
   
3. System.Drawing.Bitmap map = new System.Drawing.Bitmap(str);
   
4. map.Save(ms, System.Drawing.Imaging.ImageFormat.Gif);
   
5. Response.ClearContent();
   
6. Response.ContentType = "image/gif";
   
7. Response.BinaryWrite(ms.ToArray());
   

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方法二:

1. System.IO.FileStream fs = new System.IO.FileStream("Filename", System.IO.FileMode.Open, System.IO.FileAccess.Read);
   
2. byte[] datas = new byte[fs.Length];
   
3. fs.Read(datas, 0, Convert.ToInt32(fs.Length));
   
4. fs.Close();
   
5. Response.OutputStream.Write(datas,0,Convert.ToInt32(fs.Length));
   
6. Response.End();
   

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