No overload for method 'Fill' takes 1 arguments

Question

employeeTableAdapters.statecityselect1TableAdapter xxx = new employeeTableAdapters.statecityselect1TableAdapter();
        employee.DataTable1DataTable aaa = new employee.DataTable1DataTable();
        xxx.GetData(Convert.ToInt64(Txtpinnum.Text.ToString()));
        xxx.Fill(aaa);// Error: No overload for method 'Fill' takes 1 arguments