repeater中CheckBox根据数据库中记录默认选中

                for (int i = 0; i < Repeater1.Items.Count; i++)

                {

                    DataTable dtm = GWDP.GetMenuShowMessage();

                    for (int j = 0; j < dtm.Rows.Count; j++)

                    {

                        Label CKID = (Label)Repeater1.Items[i].FindControl("CheckBoxID");

                        if (dtm.Rows[j]["MENU_ID"].ToString() == CKID.Text.ToString())

                        {

                            CheckBox chk = (CheckBox)Repeater1.Items[i].FindControl("cboSelectSingle");

                            chk.Checked = true;

                        }

                    }

                }

这是我的代码 我是在首次加载的时候判断 怎么一点效果都没有呢 
------解决方案--------------------
Label CKID = (Label)Repeater1.Items[i].FindControl("CheckBoxID");
是不是找错了，是label?