x86.frmMain.updateAllData C# (CSharp) Method

        private void updateAllData()
        {
            while (true)
            {
                if (!this._isClose)
                {
                    // this.Invoke(delegateRefreashgridview_chongzhijilu);



                    this.getOnlineNum();
                    this._ip = sys.getIP();
                    this.getMeMsg();
                    if (!this.isOpenMsg)
                    {
                        this.isOpenMsg = true;
                        try
                        {

                            DataTable dataTable = new messagesClass().search("弹出提示");
                            if (dataTable.Rows.Count > 0)
                            {
                                for (int index = 0; index < dataTable.Rows.Count; ++index)
                                {
                                    int num = (int)MessageBox.Show(dataTable.Rows[index]["content"].ToString().Trim());
                                }
                            }
                        }
                        catch
                        {
                        }
                    }
                    Thread.Sleep(120000);
                }
                else
                    break;
            }
        }
        private void getOnlineNum()