MVC4 用戶關閉瀏覽器後更新用戶登陸狀態

前臺代碼:ajax

  <body onbeforeunload="RunOnBeforeUnload()" class="easyui-layout" style="overflow-y: hidden" scroll="no">瀏覽器

  </body>async

 

  function RunOnBeforeUnload() {
                //更改用戶登陸狀態
                var currUser = getCookie("UserAccount");
                $.ajax({
                    type: "post",
                    url: "../Home/UpdateLoginState",
                    data: { 'currUser': currUser},
                    dataType: "text",
                    async: false,
                    success: function (data) {
                        
                    }
                });
            }
post

 

後臺代碼:ui

 

   //關閉瀏覽器後更改用戶登陸狀態
        public ActionResult UpdateLoginState()
        {
            string currUser = "";
            string stateStr = "";
            if (Request["currUser"]!=null)
            {
                currUser = Request["currUser"].ToString();
                string updaStr = "update Users set OnLine=0 where UserAccount='"+currUser.Trim()+"'";
                int coun = SqlHelper.ExecuteSql(updaStr);
                if (coun > 0)
                {
                    stateStr = "更改爲功!";
                }
                else
                {
                    stateStr = "更改失敗!";
                }
            }
            return Content(stateStr);
        }
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