1、throamvb.dll文件
2、在 Visual Studio 2005 命令提示 中运行：
tlbimp D:\门户\throam.dll /out:myThroam.dll /namespace:myThroam
在C:\Program Files\Microsoft Visual Studio 8\VC 目录下生成文件 myThroamvb.dll

3、在项目中添加DLL引用，选择生成的DLL文件
4、

                string ticket = Request.QueryString["ticket"];
                if (ticket == "" || ticket == null)
                    return;

                myThroamvb.roamClass t = new myThroamvb.roamClass();
                string ret = t.chkticket(ticket, "JWCCX", Request.UserHostAddress);
                string[] info = ret.Split(':');

                if (info.Length != 7)
                {
                    Alert al = new Alert("发生错误，请重新登录！");
                    al.show();
                    return;
                }

                if (info[0].Trim() != "code=0")
                {
                    Alert al = new Alert("发生错误，请重新登录！");
                    al.show();
                    return;
                }

                //用户编号，1
                string id = info[1].Substring(info[1].IndexOf("=") + 1);

                //查询用户类别，4
                string userClass = info[4].Trim();   //学生 yhlb=X0031 ，教师 J0000