例如,要从堆栈中删除所有条目：

while (this.NavigationService.BackStack.Any())
{
   this.NavigationService.RemoveBackEntry();
}

另外,如果要在检查其URI后仅删除前一页：

var prev@R_403_437@sPage = this.NavigationService.BackStack.FirstOrDefault();

if (prev@R_403_437@sPage != null && prev@R_403_437@sPage.Source.ToString().StartsWith("/MainPage.xaml"))
{
    this.NavigationService.RemoveBackEntry();
}