void Layers_LayersInitialized(object sender, EventArgs args)
{
for (int i = 0; i < polygonLayer.Graphics.Count; i++)
{
Graphic graphic = polygonLayer.Graphics[i];
graphic.Geometry.SpatialReference = MyMap.SpatialReference;
if (!graphic.Attributes.ContainsKey("Name"))
{
graphic.Attributes.Add("Name", String.Format("Polygon_{0}", i));
graphic.Attributes.Add("Relation", null);
}
}
}