repeater里绑定dropdownlist控件各行的值

  //repeater绑定数据事件绑定答案dropdownlist
        protected void rpQuestionAnswer_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            DropDownList ddl = e.Item.FindControl("drpRightAnswer") as DropDownList;
            string[] arrAnswerOption = { "A", "B", "C", "D", "E", "F", "G", "H" };
            for (int i = 0; i < iCount; i++)
            {
                ddl.Items.Add(new ListItem(arrAnswerOption[i], i.ToString()));
            }
            ddl.DataBind();
            //找到对应行
            DataRowView drv = e.Item.DataItem as DataRowView;
            ddl.SelectedValue = dtList.Select("QuestionID=" + drv["QuestionID"].ToString())[0]["OrderID"].ToString();
        }