チャート強調表示フィルター

    public class SalesItem
    {
        public double Value { get; set; }
        public string Month { get; set; }
        public string Country { get; set; }

    }

    public class SalesItemData : List<SalesItem>
    {
        Random r = new Random();
        public SalesItemData()
        {
            this.Add(new SalesItem() { Month = "January", Country = "USA", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "January", Country = "Japan", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "January", Country = "UK", Value = r.Next(500, 1000) });

            this.Add(new SalesItem() { Month = "February", Country = "USA", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "February", Country = "Japan", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "February", Country = "UK", Value = r.Next(500, 1000) });

            this.Add(new SalesItem() { Month = "March", Country = "USA", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "March", Country = "Japan", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "March", Country = "UK", Value = r.Next(500, 1000) });

            this.Add(new SalesItem() { Month = "April", Country = "USA", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "April", Country = "Japan", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "April", Country = "UK", Value = r.Next(500, 1000) });

            this.Add(new SalesItem() { Month = "May", Country = "USA", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "May", Country = "Japan", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "May", Country = "UK", Value = r.Next(500, 1000) });

            this.Add(new SalesItem() { Month = "June", Country = "USA", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "June", Country = "Japan", Value = r.Next(500, 1000) });
            this.Add(new SalesItem() { Month = "June", Country = "UK", Value = r.Next(500, 1000) });
        }
    }

UltraCategoryChart chart = new UltraCategoryChart()
{
    ItemsSource = new SalesItemData(),
    InitialGroups = "Month",
    ChartType = CategoryChartType.Column,
    InitialHighlightFilter = "Country ne 'UK'",
    HighlightedValuesDisplayMode = SeriesHighlightedValuesDisplayMode.Overlay,
    YAxisMinimumValue = 0
};