Care.Views.RenrenAccount.btnExitLogin_Click C# (CSharp) Method

        private void btnExitLogin_Click(object sender, RoutedEventArgs e)
        {
            PreferenceHelper.RemoveRenrenPreference();
            CurrentNickName = "未登陆";
            FollowerNickName = "未关注";
            CurrentAvatar = "";
            FollowerAvatar = "";
            api.LogOut();
            App.ViewModel.IsChanged = true;
        }