No matter what symbolID I pass in, I only get an unknown image returned. When I use the military layer, the symbol is rendered correctly.
SymbolDictionary mil2525Symbols = new SymbolDictionary(SymbolDictionaryType.Mil2525c);
WriteableBitmap imageSource = mil2525Symbols.GetSymbolImage("SHGPEVATM-MQ---", size, size) as WriteableBitmap;
List<MapPoint> points = new List<MapPoint>();
points.Add(new MapPoint(500000, 500000));
MilitaryMessage message = new MilitaryMessage("1", MilitaryMessageType.PositionReport, MilitaryMessageAction.Update, points);
message.SicCode = "SHGPEVATM-MQ---";
MessageLayer.ProcessMessage(message);
