public static void LogOutVk()
{
AudioService.Stop();
AudioService.CurrentAudio = null;
AudioService.SetCurrentPlaylist(null);
AudioService.Clear();
_vkontakte.AccessToken.Token = null;
_vkontakte.AccessToken.UserId = 0;
_vkontakte.AccessToken.ExpiresIn = DateTime.MinValue;
Settings.Instance.AccessToken = null;
Settings.Instance.Save();
ViewModelLocator.Main.ShowSidebar = false;
Messenger.Default.Send(new NavigateToPageMessage()
{
Page = "/Main.LoginView"
});
}