ashx中Session怎么存取？

首先引用 using System.Web.SessionState;
然后继承接口IRequiresSessionState 就能使用session了

public void ProcessRequest(HttpContext context)
        {

int isre = bpmsuserbll.UserLogin(Account, Pwd);
                            if (isre > 0)
                            {
                                context.Session["BPMSUserid"] = isre;
                                Msg = "登录成功";
                            }

}