Hello,

I have a graph that I setup using the Range Selector example. I want to add a tooltip too it and but I am having issues. It seems that my  IGChartViewDelegate is not connected. I have over ridden the ResolveTooltipView but it is never called. Is that the correct function to override, or could it be that I am missing something else?

Here are the relevant code snippets. 

partial class RecordGraphViewController : UIViewController
    {
        [DllImport (Constants.CoreGraphicsLibrary)]
        static extern void CGRectDivide (CGRect rect, out CGRect slice, out CGRect remainder, nfloat amount, CGRectEdge edge);

        public static LoadingOverlay loadingOverlay;
        CEODataService service;
        public ItemNS ParentItem {
            get;
            set;
        }

        public RecordGraphViewController (IntPtr handle) : base (handle)
        {
        }

        public async override void ViewDidLoad ()
        {
            base.ViewDidLoad ();

            ...

            IGChartView chartView = new IGChartView ();
            chartRect.Inflate (-5, -35);
            chartView.Frame = chartRect;
            chartView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
            chartView.ZoomDisplayType = IGChartZoom.IGChartZoomHorizontal;
            chartView.CrosshairsBackground = new UIColor(0.27f, 0.67f, 0.84f, 1.0f);
            chartView.CrosshairsThickness = 3;
            chartView.CrosshairsVisibility = IGCrosshairsVisibility.IGCrosshairsVisibilityVertical;
            chartView.TooltipPinLocation = IGTooltipPinLocation.IGTooltipPinLocationTop;
            chartView.Delegate = new ChartViewDelegate();
            this.NavigationController.SetNavigationBarHidden (false, false);
            this.View.Add (chartView);

            IGAreaSeries areaSeries = chartView.AddSeries (new Class ("IGAreaSeries"), "areaSeries", source, "xAxis", "yAxis") as IGAreaSeries;

            ...

        }

public class ChartViewDelegate : Infragistics.IGChartViewDelegate
    {
        public override UIView ResolveTooltipView (IGChartView chartView, NSDictionary itemlist)
        {
            UIView tooltip = new UIView(new RectangleF(0, 0, 100, 30));
            tooltip.BackgroundColor = UIColor.LightGray;
            if (itemlist.Count > 0)
            {
                string seriesKey = itemlist.Keys.GetValue(0).ToString();
                double pointValue = ((IGCategoryPoint)itemlist.ValueForKey(new NSString(seriesKey))).Value;
                UILabel valueLabel = new UILabel();
                valueLabel.BackgroundColor = UIColor.Clear;
                valueLabel.Text = String.Format("${0:0.00}", pointValue);
                valueLabel.SizeToFit();
                valueLabel.Frame = new RectangleF(5, 5, (float)valueLabel.Frame.Size.Width, (float)valueLabel.Frame.Size.Height);
                tooltip.AddSubview(valueLabel);
            }

            return tooltip;
        }
    }