使用ProjNet.Silverlight进行ArcGis座标转换(有解决出错问题方法)

使用ProjNet.Silverlight可以将ArcGis中的从标由大地座标转换为经纬座标，代码如下

        public List<MapPoint> ConvertTo(List<MapPoint> mps)
        {

            CoordinateTransformationFactory ctfac = new CoordinateTransformationFactory();
            
            Point p = new Point(108.94,34.28);
            String bj1954Lcc = "PROJCS[\"China_LAmbert_Conformal_Conic\",GEOGCS[\"GCS_Beijing_1954\",DATUM[\"D_Beijing_1954\",SPHEROID[\"Krasovsky_1940\",6378245.0,298.3]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROjeCTION[\"LAmbert_Conformal_Conic\"],PARAMETER[\"false_EasTing\",PARAMETER[\"false_Northing\",PARAMETER[\"Central_Meridian\",105.0],PARAMETER[\"Standard_Parallel_1\",30.0],PARAMETER[\"Standard_Parallel_2\",62.0],PARAMETER[\"Latitude_Of_Origin\",UNIT[\"Meter\",1.0]]";
            

            IProjectedCoordinateSystem fromCS = CoordinateSystemWktReader.Parse(bj1954LcC) as IProjectedCoordinateSystem;
            GeographicCoordinateSystem toCS = (GeographicCoordinateSystem)fromCs.GeographicCoordinateSystem;
            List<MapPoint> list = new List<MapPoint>();
            foreach (var mp in mps)
            {
                var p1 = new Point(mp.X,mp.Y);
                var p2 = ctfac.CreateFromCoordinateSystems(fromCS,toCS).MathTransform.Transform(p1);
                list.Add(new MapPoint(p2.X,p2.Y));
            }
            return list;
        }

下载ProjNet.Silverlight后在Silverlight中使用是会出一个'p' is not recognized.的错误,找了半天没有解决，最后反编译代码然后跟踪发现原来有一个字符处理时使用的是Encoding是Unicode,在中文的C#中字符串的默认编码是UTF-8,将代码中的Unicode改为UTF-8即可！

需要改的代码在:ProjNet.Converters.WellKNowntext.IO.StreamTokenizer类中的

 private TokenType NextTokenAny()中!