Yea I'm still getting a really small number. I tried it slightly different than Nathalie but sounds like the same results. Do you know what I am missing.
private void MyDrawObject_DrawComplete(object sender, DrawEventArgs args)
{
ESRI.ArcGIS.Client.Geometry.Polygon polygon = args.Geometry as ESRI.ArcGIS.Client.Geometry.Polygon;
polygon.SpatialReference = MyMap.SpatialReference;
Graphic graphic = new Graphic()
{
Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol,
Geometry = polygon,
};
GeometryService geometryService =
new GeometryService("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
geometryService.AreasAndLengthsCompleted += GeometryService_AreasAndLengthsCompleted;
geometryService.Failed += GeometryService_Failed;
GraphicsLayer graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
graphicsLayer.Graphics.Add(graphic);
List<Graphic> graphicList = new List<Graphic>();
graphicList.Add(graphic);
geometryService.AreasAndLengthsAsync(graphicList,LinearUnit.Meter, LinearUnit.Meter, null);
}
private void GeometryService_AreasAndLengthsCompleted(object sender, AreasAndLengthsEventArgs args)
{
//TODO: Geometry service not returning correct values, area unit seems invalid, may need to use data in
//planar coordinate space
// convert results from meters into miles and sq meters into sq miles for our display
double miles = args.Results.Lengths[0] * 0.0006213700922;
double sqmi = Math.Abs(args.Results.Areas[0]) * 0.0000003861003;
ResponseTextBlock.Text = String.Format("Polygon area: {0} sq. miles\nPolygon perimeter: {1} miles.", Math.Round(sqmi, 3), Math.Round(miles, 3));
}
