private void Page_Load(object sender, System.EventArgs e)
  
  {
  
  string imgid =Request.QueryString["imgid"];
  
  string connstr=((NameValueCollection)
  
  Context.GetConfig("appSettings"))["connstr"];
  
  string sql="SELECT imgdata, imgtype FROM ImageStore WHERE id = "
  
  + imgid;
  
  SqlConnection connection = new SqlConnection(connstr);
  
  SqlCommand command = new SqlCommand(sql, connection);
  
  connection.Open();
  
  SqlDataReader dr = command.ExecuteReader();
  
  if(dr.Read())
  
  {
  
   Response.ContentType = dr["imgtype"].ToString();
  
   Response.BinaryWrite( (byte[]) dr["imgdata"] );
  
  }
  
  connection.Close();
  
  }
  
  
  
   在上面的代码中我们使用了一个已经打开的数据库，通过datareader选择images。接着用Response.BinaryWrite代替Response.Write来显示image文件。 
  

(编辑:aniston)