c# - serialport pinchanged event's weird behaviour -


i using rfid reader/writer uses serial port. trying make program work if unplugs serial port , plugs again. serial port pinchanged event allow me know if serial port unplugged,at point start timer tries connect serial port every 1 second , if plugged again starts serial port. seems working fine there 1 problem works if put breakpoint on pinchanged event handler , not work otherwise. works if put messagebox.show() in serialport pinchanged event. below code

    private void serialport1_pinchanged_1(object sender, serialpinchangedeventargs e)     {         messagebox.show("serialport changed event type" + e.eventtype.tostring());          if ((e.eventtype == serialpinchange.ctschanged || e.eventtype == serialpinchange.dsrchanged) && !serialport1.isopen)         {             this.invoke(new methodinvoker(delegate()             {                 timertoreconnectdevice = new system.windows.forms.timer();                 timertoreconnectdevice.interval = 1000;                 timertoreconnectdevice.tick += new eventhandler(timertoreconnectdevice_tick);                 timertoreconnectdevice.enabled = true;                 timertoreconnectdevice.start();             }));         }     }


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