csharp/ABTSoftware/SciChart.Wpf.Examples/Sandbox/WPFChartPerformanceBenchmark/WPFChartPerformanceBenchmark/ViewModelBase.cs

using System.ComponentModel;

namespace WPFChartPerformanceBenchmark
{
    public clast ViewModelBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        protected virtual void OnPropertyChanged(string propertyName)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}