Multiple Image MKAnnotationView Workbook

---
uti: com.xamarin.workbook
platforms:
- iOS
---

```csharp
using MapKit;
```

```csharp
var region = new MKCoordinateRegion();
region.Center.Latitude = 37.77;
region.Center.Longitude = -122.42;
region.Span.LatitudeDelta = 0.2;
region.Span.LongitudeDelta = 0.2;
```

```csharp
var map = new MKMapView{
    ShowsUserLocation = true,
    ZoomEnabled = true,
    ScrollEnabled = true,
    Region = region
}
```

```csharp
map.Frame = RootViewController.View.Bounds;
RootViewController.View.AddSubview(map);
```

```csharp
var img1 = UIImage.FromFile("bridge.jpg");
```

```csharp
var img2 = UIImage.FromFile("park.png")
```

```csharp
class MyMapDelegate : MKMapViewDelegate
{
    static string ID = "MyAnnotationID";

    public Dictionary<IMKAnnotation, UIImage> ImageForAnnotation { get; }

    public MyMapDelegate()
    {
        ImageForAnnotation = new Dictionary<IMKAnnotation, UIImage>();
    }

    override public MKAnnotationView GetViewForAnnotation (MKMapView mapView, IMKAnnotation annotation)
    {
        var annotationView = mapView.DequeueReusableAnnotation(ID);
        if (annotationView == null)
        {
            annotationView = new MKAnnotationView(annotation, ID);
        }
        else
        {
            annotationView.Annotation = annotation;
        }
        annotationView.CanShowCallout = true;
        if(ImageForAnnotation.ContainsKey(annotation))
        {
            annotationView.Image = ImageForAnnotation[annotation];
        }
        return annotationView;
        
    }
}
```

```csharp
var ann1 = new MKPointAnnotation{
    Coordinate = new CoreLocation.CLLocationCoordinate2D(37.82, -122.48)
};
```

```csharp
var ann2 = new MKPointAnnotation{
    Coordinate = new CoreLocation.CLLocationCoordinate2D(37.77, -122.48)
}
```

```csharp
var myDel = new MyMapDelegate();
myDel.ImageForAnnotation[ann1] = img1;
myDel.ImageForAnnotation[ann2] = img2;
map.Delegate = myDel;
map.AddAnnotation(ann1);
map.AddAnnotation(ann2);
```