在页面里写一个static方法 
    public static void ClassListBinding(string selectText)
    {
        DataAcess da = new DataAcess();
        DataTable dt = new DataTable();
        string sqlCondition = string.Empty;
        //if (!classTypeList.SelectedIndex.Equals(0))
        //{
        sqlCondition = "gradeid = " + selectText;
        //}
        dt = da.ClassListBind(sqlCondition);
        DataRow dr = dt.NewRow();
        dr[dt.Columns[0].ColumnName] = "1000";
        dr[dt.Columns[1].ColumnName] = "未选择";
        dt.Rows.InsertAt(dr, 0);
        pag
        classNameList.DataSource = dt.DefaultView;
        classNameList.DataValueField = dt.Columns[0].ColumnName;
        classNameList.DataTextField = dt.Columns[1].ColumnName;
        classNameList.Items.Add(dt.ToString());
        classNameList.DataBind();
        dt.Dispose();
    }
classNameList是控件名 但是不能识别 请问怎么在是static方法里获得服务器端控件