public static void Sample4() { WriteLine("V1 : "); var v1 = new Sample4Version1(); v1.Prices.Add(1.2); v1.Prices.Add(5.3); WriteLine(v1.MessageWithTotal); WriteLine("V2 : "); var v2 = new Sample4Version2(); v2.Prices.Add(1.2); v2.Prices.Add(5.3); WriteLine(v2.MessageWithTotal); }