Creating a line graphic with symbol style "Solid" throws

JannisKotsis

I modified one of the standard WPF samples (RenderSimpleMarkers) to create a line graphic instead of a point graphic e.g:

replaced:  

Graphic graphicWithSymbol = new Graphic(centralLocation, simpleSymbol);

with:

Graphic graphicWithSymbol = CreateSimpleLine(), where CreateSimpleLine is  the following procedure:

public static Graphic CreateSimpleLine()
{
MapPoint point1 = new MapPoint(-79.497238, 8.849289, SpatialReferences.Wgs84);

var newPoint1 = (MapPoint)GeometryEngine.Project(point1, SpatialReferences.WebMercator);

var cartoLineSym = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Colors.Black, 1);

MapPoint point2 = new MapPoint(-80.035568, 9.432302, SpatialReferences.Wgs84);
var newPoint2 = (MapPoint)GeometryEngine.Project(point2, SpatialReferences.WebMercator);
var aBuilder = new PolylineBuilder(new MapPoint[] { newPoint1, newPoint2 });

var aGraphic = new Graphic(aBuilder.ToGeometry(), cartoLineSym);
return aGraphic;
}

If I change the SimpleLineSymbolStyle to other than solid everything works OK but with the solid pattern the program throws!

JannisKotsis

You can take the following code and paste it in the RenderSimpleMarkers.xaml.cs, sample provided in from ArcgisRuntime.WPF.Samples. This draws a red line across the Panama Canal, if it's style isn't SOLID of cource!

public partial class RenderSimpleMarkers
{
public RenderSimpleMarkers()
{
InitializeComponent();

// Create the UI, setup the control references and execute initialization
Initialize();
}

private void Initialize()
{
// Create new Map with basemap
Map myMap = new Map(Basemap.CreateImagery());

// Create initial map location and reuse the location for graphic
MapPoint point1 = new MapPoint(-79.497238, 8.849289, SpatialReferences.Wgs84);

var centralLocation = (MapPoint)GeometryEngine.Project(point1, SpatialReferences.WebMercator);

Viewpoint initialViewpoint = new Viewpoint(centralLocation, 1000000);

// Set initial viewpoint
myMap.InitialViewpoint = initialViewpoint;

// Provide used Map to the MapView
MyMapView.Map = myMap;

// Create overlay to where graphics are shown
GraphicsOverlay overlay = new GraphicsOverlay();

// Add created overlay to the MapView
MyMapView.GraphicsOverlays.Add(overlay);

// Create a simple marker symbol
SimpleMarkerSymbol simpleSymbol = new SimpleMarkerSymbol()
{
Color = Colors.Red,
Size = 10,
Style = SimpleMarkerSymbolStyle.Circle
};

// Add a new graphic with a central point that was created earlier
Graphic graphicWithSymbol = CreateSimpleLine(); //new Graphic(centralLocation, simpleSymbol);
overlay.Graphics.Add(graphicWithSymbol);
}

public static Graphic CreateSimpleLine()
{
MapPoint point1 = new MapPoint(-79.497238, 8.849289, SpatialReferences.Wgs84);
var newPoint1 = (MapPoint)GeometryEngine.Project(point1, SpatialReferences.WebMercator);
var cartoLineSym = new SimpleLineSymbol(SimpleLineSymbolStyle.DashDot, Colors.Red, 5);
MapPoint point2 = new MapPoint(-80.035568, 9.432302, SpatialReferences.Wgs84);
var newPoint2 = (MapPoint)GeometryEngine.Project(point2, SpatialReferences.WebMercator);
var aBuilder = new PolylineBuilder(new MapPoint[] { newPoint1, newPoint2 });

var aGraphic = new Graphic(aBuilder.ToGeometry(), cartoLineSym);
return aGraphic;

}
}