程序代码：

HttpCookieCollection cookies = Request.Cookies;

DataRow dr = dt1.Rows[0];

string username = dr["username"].ToString().ToUpper();
            //这里
Response.Cookies["huiyuan"]["huiyuanbianhao"] = username.Split('_')[0];
Session["huiyuanbianhao"] = username.Split('_')[0];

Response.Redirect("index.aspx");