protected void btndelete_Click(object sender, EventArgs e)
    {
        LinkButton obj = (LinkButton)(sender);
        string     val = obj.CommandArgument.ToString();

        BLLQuestion objbll = new BLLQuestion();

        objbll.Id = Convert.ToInt32(val);
        int a = objbll.DeleteQuestion(objbll);

        LoadGrid();
    }