顯示圖像

Question

在從在GridView控制數據庫中的圖像的顯示，發生瞭如下錯誤：Parameter is not valid

下面的代碼顯示圖像：

 var id = Convert.ToString(user_id); 

     var category = (from data in db.Register1_db 
         where (data.User_ID == id) 
         select (data.Student_Photo)); 

     int len = category.First().Length; 
     // Output the binary data   
     // But first we need to strip out the OLE header   
     int OleHeaderLength = 78; 
     int strippedImageLength = len - OleHeaderLength; 
     byte[] imagdata = new byte[strippedImageLength];   
     Array.Copy(category.First().ToArray(), OleHeaderLength, imagdata, 0, strippedImageLength);   
     if ((imagdata) != null)   
     {    
      MemoryStream m = new MemoryStream(imagdata); 

       //error occurred    
      System.Drawing.Image image = System.Drawing.Image.FromStream(m);    
      image.Save(context.Response.OutputStream, ImageFormat.Jpeg);   
     } 

Answer 1

的更好的方式來顯示圖像在gridview中使用圖像處理程序。 Check this