c# - GetProcessesByName stops my events in outlook -

i wrote program syncs outlook calendar. far program works fine. if outlook crashes or gets restarted program need fire "thisaddin_startup()" again link new outlook instance. tried solve monitoring running processes. didn't work more. if call "process.getprocessesbyname" in loop nothing works commented work.

does know why?

bool monitoring = false; while (true) {    if (!monitoring) //start monitoring or restart monitoring    {       debug.writeline("start");       thisaddin_startup();       monitoring = true;    }    process[] outlook;    outlook = process.getprocessesbyname("blabla");    thread.sleep(1000); }   private void thisaddin_startup() {    _outlookapplication = new outlook.application();     //link inbodx events    _olfolderinbox.items.itemadd += new outlook.itemsevents_itemaddeventhandler(item_calendar_change);     //link calendar events    _olfoldercalendar.items.itemadd += new outlook.itemsevents_itemaddeventhandler(item_calendar_add);    _olfoldercalendar.items.itemchange += new outlook.itemsevents_itemchangeeventhandler(item_calendar_change);    _olfoldercalendar.items.itemremove += new outlook.itemsevents_itemremoveeventhandler(item_calendar_deleted); } 

edit: simplified hole code still nothing works:

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.threading.tasks; using system.windows.forms;  using outlook = microsoft.office.interop.outlook; using system.diagnostics; using system.threading; using system.componentmodel;  namespace oaddin {     public partial class form1 : form     {         outlook.application _outlookapplication;         outlook.mapifolder _olfolderinbox;         outlook.mapifolder _olfoldercalendar;         outlook.mapifolder _olfoldercalendar_addoncalendar;         outlook.mapifolder _olfolderdeleteditems;          public form1()         {             initializecomponent();              thread osthread = new thread(thisaddin_startup);             osthread.start();              thread osthread2 = new thread(checkifprocessisrunning);             osthread2.start();         }          private void thisaddin_startup()         {             _outlookapplication = new outlook.application();             initcalendars();             initmailbox();              debug.writeline("start monitoring");              //link inbodx events             _olfolderinbox.items.itemadd += new outlook.itemsevents_itemaddeventhandler(item_calendar_change);              //link calendar events             _olfoldercalendar.items.itemadd += new outlook.itemsevents_itemaddeventhandler(item_calendar_add);             _olfoldercalendar.items.itemchange += new outlook.itemsevents_itemchangeeventhandler(item_calendar_change);             _olfoldercalendar.items.itemremove += new outlook.itemsevents_itemremoveeventhandler(item_calendar_deleted);          }          void checkifprocessisrunning()         {             while (true)             {                  int returnvalue = 0;                 process[] o = process.getprocessesbyname("outlook");                  debug.writeline("fssfssgsfsfsfsfsfsf: " + returnvalue);                 thread.sleep(3000);             }         }          private void initcalendars()         {             outlook.mapifolder calendars = (outlook.mapifolder)_outlookapplication.getnamespace("mapi").getdefaultfolder(outlook.oldefaultfolders.olfoldercalendar);             try             {                 _olfoldercalendar_addoncalendar = calendars.folders["addoncalendar"]; //addon calendar             }             catch             {                 _olfoldercalendar_addoncalendar = calendars.folders.add("addoncalendar");             }             _olfoldercalendar = calendars; //standard calendar          }          private void initmailbox()         {             _olfolderinbox = (outlook.mapifolder)_outlookapplication.getnamespace("mapi").getdefaultfolder(outlook.oldefaultfolders.olfolderinbox);             _olfolderdeleteditems = (outlook.mapifolder)_outlookapplication.getnamespace("mapi").getdefaultfolder(outlook.oldefaultfolders.olfolderdeleteditems);         }           void item_calendar_add(object item)         {             debug.writeline("");             debug.writeline("------ item_calendar_add() ----------------------------------------------");             printimportantinfo(item);          }          public void item_calendar_change(object item)         {             debug.writeline("");             debug.writeline("------ item_calendar_change() ----------------------------------------------");             printimportantinfo(item);           }          void item_calendar_deleted()         {             debug.writeline("");             debug.writeline("------ item_calendar_deleted() ---------------------------------------------");             object item = _olfolderdeleteditems.items.getlast();             printimportantinfo(item);           }          void printimportantinfo(object item)         {             try             {                   outlook.appointmentitem appointment = item outlook.appointmentitem;                 if (appointment != null)                 {                     debug.writeline("appointmentinfo_________________________________________________________");                     debug.writeline("   a_subject: " + appointment.subject.tostring());                     debug.writeline("   a_meetingstatus: " + appointment.meetingstatus.tostring());                     debug.writeline("   a_responsestatus: " + appointment.responsestatus.tostring());                     debug.writeline("   a_globalappointmentid: " + appointment.globalappointmentid.tostring());                     debug.writeline("   a_time: " + appointment.start.tostring() + " - " + appointment.end.tostring());                     debug.writeline("   a_organizer: " + appointment.getorganizer().address.tostring());                     debug.writeline("   a_organizer: " + appointment.organizer);                     if (appointment.location != null)                         debug.writeline("   a_location: " + appointment.location.tostring());                 }                 outlook.meetingitem meeting = item outlook.meetingitem;                 if (meeting != null)                 {                     debug.writeline("meetinginfo_____________________________________________________________");                      debug.writeline("   m_subject: " + meeting.subject.tostring());                     debug.writeline("   m_messageclass: " + meeting.messageclass.tostring());                     debug.writeline("   m_senderemailaddress: " + meeting.senderemailaddress.tostring());                     appointment = meeting.getassociatedappointment(false);                     if (appointment != null)                     {                         debug.writeline("appointmentinfo_________________________________________________________");                         appointment.save();                         debug.writeline("   a_subject: " + appointment.subject.tostring());                         debug.writeline("   a_meetingstatus: " + appointment.meetingstatus.tostring());                         debug.writeline("   a_responsestatus: " + appointment.responsestatus.tostring());                         debug.writeline("   a_globalappointmentid: " + appointment.globalappointmentid.tostring());                         debug.writeline("   a_time: " + appointment.start.tostring() + " - " + appointment.end.tostring());                         debug.writeline("   a_organizer: " + appointment.getorganizer().address.tostring());                         debug.writeline("   a_organizer: " + appointment.organizer.tostring());                         if (appointment.location != null)                             debug.writeline("   a_location: " + appointment.location.tostring());                     }                 }             }             catch { }         }       } } 

have tried doing each action within separate thread?

bool monitoring = false; while (true) {    if (!monitoring) //start monitoring or restart monitoring    {       debug.writeline("start");       thisaddin_startup();       monitoring = true;    }    process[] outlook;    new thread(() => {      outlook = process.getprocessesbyname("blabla");    }.start();    thread.sleep(1000); }   private void thisaddin_startup() {    _outlookapplication = new outlook.application();     //link inbodx events    _olfolderinbox.items.itemadd += new outlook.itemsevents_itemaddeventhandler(item_calendar_change);     //link calendar events    _olfoldercalendar.items.itemadd += new outlook.itemsevents_itemaddeventhandler(item_calendar_add);    _olfoldercalendar.items.itemchange += new outlook.itemsevents_itemchangeeventhandler(item_calendar_change);    _olfoldercalendar.items.itemremove += new outlook.itemsevents_itemremoveeventhandler(item_calendar_deleted); }