Question

gistfile1.txt

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApplication1 {
    class Program {

        public interface IDataPoint {

            int Index { get; set; }
            double Value { get; set; }
            DateTime TimeStampLocal { get; set; }
            IDataPoint Clone();
        }

        public sealed class SimpleDataPoint : IDataPoint {

            public int Index { get; set; }
            public double Value { get; set; }
            public DateTime TimeStampLocal { get; set; }

            public IDataPoint Clone() {
                return new SimpleDataPoint {
                    Index = Index,
                    Value = Value,
                    TimeStampLocal = TimeStampLocal,
                };
            }
        }

        public interface IDataSeries<TDataPoint> where TDataPoint : class, IDataPoint {

            object Source { get; }

            int Count { get; }
            double GetValue(int index);
            DateTime GetTimeStampLocal(int index);
            TDataPoint GetDataPoint(int index);
            TDataPoint GetLastDataPoint();
            void Add(TDataPoint dataPoint);

            IDataSeries<TDataPoint> Branch(object source);
        }

        public class DataSeries<TDataPoint> : IDataSeries<TDataPoint> where TDataPoint : class, IDataPoint {

            readonly List<TDataPoint> _data = new List<TDataPoint>();

            public object Source {
                get;
                private set;
            }

            public DataSeries(object source) {
                Source = source;
            }

            public int Count {
                get { return _data.Count; }
            }
            public TDataPoint GetDataPoint(int index) {
                return _data[index];
            }
            public TDataPoint GetLastDataPoint() {
                return _data[_data.Count - 1];
            }
            public DateTime GetTimeStampLocal(int index) {
                return _data[index].TimeStampLocal;
            }
            public double GetValue(int index) {
                return _data[index].Value;
            }
            public void Add(TDataPoint dataPoint) {
                _data.Add(dataPoint);
            }

            public IDataSeries<TDataPoint> Branch(object source) {
                throw new NotImplementedException();
            }
        }


        [STAThread]
        static void Main(string[] args) {

            var source = new object();
            var ds = (IDataSeries<IDataPoint>)new DataSeries<SimpleDataPoint>(source);

            Console.ReadKey();
        }
    }

}