c# - Web browser not firing Navigated and DocumentCompleted event -

i trying load url address webcontrol show on form in winforns project. code:

webbrowser webcontrol = new webbrowser(); webcontrol.allownavigation = true; webcontrol.visible = true; webcontrol.scrollbarsenabled = false; webcontrol.scripterrorssuppressed = true;  webcontrol.documentcompleted += (sender, args) => {     ...... };  webcontrol.navigated += (sender, args) => {     ...... };  webcontrol.navigating += (sender, args) => {     ..... };  webcontrol.navigate(url); 

the event navigating fired, navigated , documentcompleted not. application should show google translate page translated text. trying url address:

1) https://translate.google.com/#en/fr/try+to+translate  

what's wrong advice