c# – 如何使用javascript获取会话值

namespace General
{

    public class Session
    {
        public Session()
        {
        }


        public static string UserID
        {
            get { return HttpContext.Current.Session["UserID"] as string ?? String.Empty; }
            set { HttpContext.Current.Session["UserID"] = value;  }
        }

        public static string departFlightID
        {
            get { return HttpContext.Current.Session["departFlightID"] as string ?? String.Empty; }
            set { HttpContext.Current.Session["departFlightID"] = value; }
        }

        public static string returnFlightID
        {
            get { return HttpContext.Current.Session["returnFlightID"] as string ?? String.Empty; }
            set { HttpContext.Current.Session["returnFlightID"] = value; }
        }
}

}

现在在某个时候我将flightID存储在：

General.Session.departFlightID = flightID;

而在另一点我想使用Javascript检索这个值.我已经看到这里的例子,但他们不会工作(没有错误,但他们将返回EMPTY).

最近的尝试：

var session = '<%= General.Session.departFlightID %>';
 var session = '<%= HttpContext.Current.Session["departFlightID"] %>';

它的工作,如果我设置页面加载的价值,但我正在运行一个webmethod,我创建一个html,然后发送该html回来填充在一个div,在那里打票.我需要获取会话值,但不会更新.

为了更清楚这里是Javascript代码：

<script type="text/javascript">


function addTicket(flightID,flightType) {
    PageMethods.addTicket(flightID,flightType,OnGetMessageSuccess);
}

function OnGetMessageSuccess(result,userContext,methodName) {

    var pageUrl = document.URL;
    if (pageUrl.indexOf("&ret_date=&") !== -1) {

        var session = '<%= HttpContext.Current.Session["departFlightID"] %>';

        alert(session);
        result = result + "<a onclick="searchflight.abortAllAjax()" data-index="6" class="bookNow" title="Book Now!" href="#">Book Now!</a>";
        result = result + "</div>    </div>  </div>";
        document.getElementById("detail").innerHTML = result;
    }

}

这里是webmethod：

[System.Web.Services.WebMethod]
    public static string addTicket(string flightID,string flightType)
    {
        //GET FLIGHT DETAILS  FROM DATATABLE OR SESSION DATA TABLE
        string tmpHtml = string.Empty;
        tmphtml="sample";
        string flightID="123123213";
        General.Session.departFlightID=flightID;

    return tmphtml;
    }