private void BtnAlarm_Click(object sender, EventArgs e) { if (objFrmAlarm == null) { objFrmAlarm = new FrmAlarm(); //第四步:绑定委托 myAddLog = objFrmAlarm.AddLog; } else { objFrmAlarm.InitialDGV(Convert.ToInt32(new IniConfigHelper().ReadIniData("历史报警显示条数", "Count", "", CommonMethods.FilePath))); objFrmAlarm.BringToFront(); } objFrmAlarm.Show(); }