Forex_Strategy_Builder.Actions.MenuPrevHistory_OnClick C# (CSharp) Method

        protected override void MenuPrevHistory_OnClick(object sender, EventArgs e)
        {
            if (Data.GeneratorHistory.Count > 0 && Data.GenHistoryIndex > 0)
            {
                Data.GenHistoryIndex--;
                Data.Strategy = Data.GeneratorHistory[Data.GenHistoryIndex].Clone();
                RebuildStrategyLayout();
                Calculate(true);
            }

            return;
        }