public void OnLegendItemCreating(LegendItemCreatingEventArgs e)
        {
            int endIndex = ActualPaletteItem.Colorizer != null ? ActualPaletteItem.Colorizer.Colors.Count - 1 : 3;

            if (e.Index == 0)
            {
                e.Item.Text = "low";
            }
            else if (e.Index == endIndex)
            {
                e.Item.Text = "high";
            }
            else
            {
                e.Item.Text = " ";
            }
        }
 void map_LegendItemCreating(object sender, LegendItemCreatingEventArgs e)
 {
     e.Item.Text = String.Format("{0}$", e.Item.Value);
 }