//enables usage of data in the selected row
        protected void btnOmoguci_Click(object sender, EventArgs e)
        {
            Button btn      = sender as Button;
            int    rowIndex = 0;

            if (int.TryParse((string)btn.CommandArgument, out rowIndex))
            {
                rowIndex -= 1;
                Meal m = mealsList.ElementAt(rowIndex);
                rowIndex %= gvMeals.PageSize;
                if (!m.IsValid)
                {
                    m.IsValid = true;
                    SQLProcedures.EnableDisableMeal(m);
                    gvMeals.Rows[rowIndex].FindControl("btnUredi").Visible     = true;
                    gvMeals.Rows[rowIndex].FindControl("btnOnemoguci").Visible = true;

                    gvMeals.Rows[rowIndex].FindControl("btnOmoguci").Visible = false;
                }
            }
            else
            {
                throw new Exception();
            }
        }