How to use page session value and function in Jquery webmethod

Question

I have a session value and a function in a apsx.cs page and I am using jquery webmethod to insert data into database.

Now i want to access session value and function in webmethod but it gives some error.

Below is my Page load code:

int nUserId = Convert.ToInt16(Session["UId"]);

And a Function :

    public int CalcUser()
    {
       return Convert.ToInt16(Session["UId"]) * 2;
    }

Now below is my Webmethod:

    [WebMethod]
    public static void Save()
    {
        UserInfo objUser = new UserInfo();
        objUser.Useid = Convert.ToInt16(Session["UId"]);
        objUser.CalcUser = CalcUser();
        ... Save into Database           
    }

So how can I use session value and function in webmwthod.

Thanks

Karl Anderson · Accepted Answer · 2013-12-19 13:42:05Z

2

You need to explicitly state that you want to use Session with your ASP.NET AJAX Page Method by using the EnableSession= true value in the WebMethod attribute, like this:

[WebMethod(EnableSession = true)]
public static void Save()
{
    UserInfo objUser = new UserInfo();
    objUser.Useid = Convert.ToInt16(HttpContext.Current.Session["UId"]);
    objUser.CalcUser = CalcUser();
    ... Save into Database           
}

Note: You must fully qualify the namespace of the session (HttpContext.Current.Session).

To use the CalcUser() function you need to make it static and fully qualify the Session object, like this:

public static int CalcUser()
{
   return Convert.ToInt16(HttpContext.Current.Session["UId"]) * 2;
}

Note: ASP.NET AJAX Page Methods only have access to static methods, as there is no instance of the page (or any class for that matter).

edited Dec 19, 2013 at 13:42

answered Dec 19, 2013 at 13:05

Karl Anderson

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3 Comments

Hitesh Over a year ago

Hi For Session it works fine but how can I use CalcUser() function in webmethod.

Karl Anderson Over a year ago

To use the CalcUser() method you need to make it static, see updated answer.

Karl Anderson Over a year ago

@Hitesh - glad it is working for you. Feel free to up-vote the answer as well. :-)

शेखर · Accepted Answer · 2013-12-19 12:57:46Z

0

You need to use [WebMethod(EnableSession = true)] on webmethod
Then you can use like Context.Session["key"]

    [WebMethod]
    [WebMethod(EnableSession = true)]
    public static void Save()
    {
        UserInfo objUser = new UserInfo();
        objUser.Useid = Convert.ToInt16(Context.Session["UId"]);
        objUser.CalcUser = CalcUser();
        ... Save into Database           
    }

answered Dec 19, 2013 at 12:57

शेखर

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