void geometryService_ProjectCompleted(object sender, GraphicsEventArgs e)
{
Graphic resultGraphic = e.Results[0];
resultGraphic.Symbol = LayoutRoot.Resources["RoundMarkerSymbol"] as SimpleMarkerSymbol;
MapPoint resultMapPoint = resultGraphic.Geometry as MapPoint;
resultGraphic.Attributes.Add("Output_Coordinate", resultMapPoint.X + "," + resultMapPoint.Y);
MapPoint inputMapPoint = e.UserState as MapPoint;
resultGraphic.Attributes.Add("Input_Coordinate", inputMapPoint.X + "," + inputMapPoint.Y);
graphicsLayer.Graphics.Add(resultGraphic);
}