how to check changes in api code example

Example 1: how to update ui with increase of database changes

private IList<channel> _channel;
    public IList<channel> Channels
    {
        get
        {
            return _channel;
        }
        set
        {
            _channel = value;
            //NotifyPropertyChanged();
            OnPropertyChanged("Channels");
        }
    }

Example 2: how to update ui with increase of database changes

_DataContext = new ViewModels.SummaryTable_ViewModel();
    this.DataContext = _DataContext;
    UIUpdateThread = new Thread(UIUpdaterThread);
    UIUpdateThread.IsBackground = true;
    UIUpdateThread.Start();