c# - Refresh the user interface while a separated STA thread is adding many controls -

i add pushpins on map means of thread. thread sta , use dispatcher.

the issue map not refreshed pushpins. no pushpin appears on map.

i've class named "serialinterf" reads serial port. each reading invokes event 'datareceivedhandler':

private void datareceivedhandler(object sender, serialdatareceivedeventargs e)     {         serialport port = (serialport)sender;         string data = port.readexisting();          latlong message = getdata(data);          serialinterfeventargs arg = new serialinterfeventargs(message);         this.messagereceived(this, arg);     } 

the event "datareceivedhandler" invokes event of same class called "messagereceived". class serialinterf instancied mainwindow class. in last one, event "messagereceived" defined:

transm.messagereceived += new trans.serialinterfeventhandler(writetrace); 

the method writetrace launches thread (sta):

private void writetrace(object sender, transmissioneventargs e)         {             // on crée un thread car on ne peut pas modifier l'utilisateur interface avec un thread mta (par défaut).             thread thread = new thread(() => test(e.message));             thread.setapartmentstate(apartmentstate.sta);             thread.start();         } 

this thread launches method "test" must create pushpins on map:

private void test(latlong message)         {             this.dispatcher.invoke(new action(() =>              {                 pushpin pin = new pushpin();                 pin.location = new location(message.latitude, message.longitude);                  map.children.add(pin);             }));         } 

the code

this.dispatcher.invoke(new action(() =>  

has been modified by

this.map.dispatcher.invoke(new action(() =>  

that's ok !

see: cross-thread

i don't think need sta thread.