c# - Closing application after event -

i'm using .net webbrowser in order render html page , save bitmap (got code stackoverflow post). problem thread starts web browser never closes.

the thread should close when startbrowser method finishes never because application.run never ends.

my question : how close application after webbrowser finishes rendering page , saves bitmap ? adding application.exit(); inside documentcompleted event doesn't seem work.

code:

public class dotnetrenderer : ihtmlrenderer {      static bitmap bmp;     thread th;     public void initializerenderer()     {      }     public bitmap renderhtml(string htmlcontent)     {         th = new thread(() => startbrowser(htmlcontent));         th.setapartmentstate(apartmentstate.sta);         th.start();         th.join();         return bmp;     }      public static void startbrowser(string source)     {         var webbrowser = new webbrowser();         webbrowser.scrollbarsenabled = false;         webbrowser.documentcompleted +=             webbrowser_documentcompleted;         webbrowser.documenttext = source;         application.run();     }      static void webbrowser_documentcompleted(object sender, webbrowserdocumentcompletedeventargs e)     {         var webbrowser = (webbrowser)sender;         bmp = new bitmap(webbrowser.width, webbrowser.height);         webbrowser.drawtobitmap(bmp, new system.drawing.rectangle(0, 0, bmp.width, bmp.height));         application.exitthread();     } } 

application.exitthread() want, don't know why webbrowser width , height (250,250) regardless of input html.