public override void OnCalculateMinMax()
        {
            MinValue = double.MaxValue;
            MaxValue = double.MinValue;

            if (!IsVisible)
            {
                return;
            }

            if (ChartAnchors.Any(a => !a.IsEditing))
            {
                foreach (ChartAnchor ca in ChartAnchors)
                {
                    MinValue = Math.Min(MinValue, ca.Price);
                    MaxValue = Math.Max(MaxValue, ca.Price);
                }
            }
        }