SqlConnection con = DB.createdbconnection();
            con.Open();
            SqlCommand cmd = new SqlCommand("select rkey,likename from bd_personlikedoc", con);
            SqlDataReader sdr = cmd.ExecuteReader();
            this.CheckBoxList1.DataTextField = "likename";
            this.CheckBoxList1.DataValueField = "rkey";
            this.CheckBoxList1.DataSource = "sdr";
            this.CheckBoxList1.DataBind();
            sdr.Close();
            con.Close();
*******************************
出错问题:提示找不到"likename",但bd_personlikedoc表里面存在这字段.