窗口传值

From1 listview空间，查询按钮button，点击查询button跳转到From2.From2连接数据库查询数据，查询的结果返回到From1的listview。问题是我现在From1 listview什么值都没有的到。本人小白，所以各位最好详情点，谢谢。
            AseDataReader reader = null;
            Myplayer myplayer =new Myplayer();
            AseConnection conn = new AseConnection("Data Source='192.168.7.88';Port='5000';UID='sa';PWD='';Database='GZMCH'; MaxPoolSize = 10;MinPoolSize = 5;ConnectionTimeout = 15;");
            try
            {
                conn.Open();
                //   String sqlstr = "select phone,filename from call_phone_takelog_ago where logtime>" + starttime + " and logtime<" + endtime + "";
                String sqlstr = "exec sp_lylisten";
                AseCommand cmd = new AseCommand(sqlstr, conn);                reader = cmd.ExecuteReader();
                while (reader.Read())
                {
                    ListViewItem lv = new ListViewItem();
                    lv.SubItems.Clear();
                    lv.SubItems.Add(Convert.ToString(reader["rowid"]));
                    lv.SubItems.Add(Convert.ToString(reader["phone"]));
                    lv.SubItems.Add(Convert.ToString(reader["filename"]));
                    myplayer.listView1.Items.Add(lv);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            finally
            {
                this.Hide();
                reader.Close();
                conn.Close();
            }