using System;
using System.Collections;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
using System.Web;
using System.Web.Security;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Configuration;
using System.Text;
我引用这些,但是不行啊
c:\inetpub\wwwroot\reg\RandomImage.aspx.cs(108): 找不到类型或命名空间名称“random”(是否缺少 using 指令或程序集引用?)