Care.MainPage.refreshModelSinaWeibo C# (CSharp) Method

        private void refreshModelSinaWeibo()
        {
            App.ViewModel.SinaWeiboPicItems.Clear();
            App.ViewModel.SinaWeiboItems.Clear();
            if (String.IsNullOrEmpty(PreferenceHelper.GetPreference("SinaWeibo_ID")))
            {
                m_progressIndicatorHelper.PopTask("Sina");
                return;
            }
            LoadSinaWeiboContent();
        }