c# - Using Session is giving error -

i have aspx page calling function below

public static string funfillemp(object[] args)         {              string strprireturn = "";             dataaccesslayer objpridt = new dataaccesslayer();              datatable dt = new datatable();             dt = objpridt.executedatatable("select mkey,emp_name,emp_card_no emp_mst "+                                             "department_mkey='" + args[0].tostring() + "' , status in ('a','s') , hub_mkey in  " +                                             "(select hub_mkey emp_mst e,user_mst u e.mkey=u.employee_mkey , e.status in ('a','s')   "+                                             "and u.mkey='" + session["userid"].tostring().trim() + "') " +                                              "order 2");             if (dt.rows.count > 0)             {                 (int intprii = 0; intprii < dt.rows.count; intprii++)                 {                     strprireturn += dt.rows[intprii][0].tostring() + "~" + dt.rows[intprii][1].tostring() + "~" + dt.rows[intprii][2].tostring() + "|";                 }             }             return strprireturn;         } 

but using session giving me error as

an object reference required nonstatic field

so how use session here?

you need use httpcontext.current.session["userid"] since you're accessing inside static method.

and yes, you'll need handle scenario when not assign session.