WP7: navigate twice back

问题

is there a way to navigate two pages back in Windows Phone 7? I know the URI, but I'd like to clear the navigation stack.

回答1:

Yes you can programmatically walk back the stack. I would recommend reading this guidance doc on this topic:

http://windowsteamblog.com/windows_phone/b/wpdev/archive/2010/12/13/solving-circular-navigation-in-windows-phone-silverlight-applications.aspx

Thanks, Stefan Wick - Microsoft Silverlight

回答2:

The easiest way to do this is like this:

NavigationService.RemoveBackEntry();
NavigationService.GoBack();

This doesn't exactly go back twice, it removes the previous page from the navigation stack, then goes back once, but the effect is the same.

回答3:

This could help you out in case you are trying to navigate to your home page.

int depth = NavigationService.BackStack.Count();
for (int i = 0; i < depth-1; i++)
{
    NavigationService.RemoveBackEntry();
}
NavigationService.GoBack();

来源：https://stackoverflow.com/questions/5628237/wp7-navigate-twice-back