1 /// <summary>  
  2        /// 将返回的json解析为Geometry,不考虑坐标包含M和Z，如果考虑，请改动即可。将ArcObjects的Geometry转为json的代码我正在测试。  
  3        /// 作者：刘宇  
  4        /// 时间2012年  
  5        /// </summary>  
  6        /// <param name="jsonResponse"></param>  
  7        /// <returns></returns>  
  8   
  9        private ESRI.ArcGIS.Client.Geometry.Geometry ParsefromJson(string jsonResponse)  
 10        {  
 11   
 12            JsonObject jsonObject = JsonObject.Parse(jsonResponse.ToString()) as JsonObject;  
 13            SpatialReference pSpatial = new SpatialReference();  
 14            ESRI.ArcGIS.Client.Geometry.Geometry pGeo = null;  
 15   
 16            if (jsonObject.ContainsKey("geometries"))  
 17            {  
 18   
 19                 
 20                JsonObject jsonObjectGeo = jsonObject["geometries"] as JsonObject;  
 21                //空间参考信息  
 22                if (jsonObjectGeo.ContainsKey("spatialReference"))  
 23                {  
 24                    pSpatial = this.myMap.SpatialReference;  
 25   
 26                     
 27                 //JsonObject pSpatialJson =jsonObjectGeo["spatialReference"] as JsonObject;  
 28   
 29                 //   根据需要添加                   
 30                }  
 31                //点线面对象，不考虑hasz和hasM  
 32                if (jsonObjectGeo.ContainsKey("points"))  
 33                {  
 34                    JsonValue JsonPoints = jsonObjectGeo["points"];  
 35   
 36                    if (JsonPoints is JsonArray)  
 37                    {  
 38                        if (JsonPoints.Count == 1)  
 39                        {  
 40                            MapPoint pPoint = new MapPoint();  
 41   
 42                            //去掉中括号  
 43   
 44                            string[] pStrPoints = JsonPoints[0].ToString().Substring(1, JsonPoints[0].ToString().Length - 2).Split(',');  
 45   
 46                            pPoint.X = Convert.ToDouble(pStrPoints[0]);  
 47                            pPoint.Y = Convert.ToDouble(pStrPoints[1]);  
 48   
 49                            pGeo = pPoint;  
 50                            
 51   
 52                        }  
 53                
 54                    }  
 55                }  
 56                else if (jsonObjectGeo.ContainsKey("paths"))  
 57                {  
 58                    JsonValue JsonPoints = jsonObjectGeo["paths"];  
 59   
 60                    ESRI.ArcGIS.Client.Geometry.Polyline pPolyline = new ESRI.ArcGIS.Client.Geometry.Polyline();  
 61   
 62   
 63                    ObservableCollection<ESRI.ArcGIS.Client.Geometry.PointCollection> pPointCollection = new ObservableCollection<ESRI.ArcGIS.Client.Geometry.PointCollection>();  
 64                    // pPolyline.Paths  
 65   
 66                    if (JsonPoints is JsonArray)  
 67                    {  
 68                        for (int i = 0; i < JsonPoints.Count; i++)  
 69                        {  
 70                            if (JsonPoints[i] is JsonArray)  
 71                            {  
 72                                ESRI.ArcGIS.Client.Geometry.PointCollection pPointCollections = new ESRI.ArcGIS.Client.Geometry.PointCollection();  
 73   
 74                                JsonArray pInnerPoints = JsonPoints[i] as JsonArray;  
 75                                for (int j = 0; j < pInnerPoints.Count; j++)  
 76                                {  
 77                                    string pStr = pInnerPoints[j].ToString();  
 78   
 79                                    string[] pStrPoints = pInnerPoints[j].ToString().Substring(1, pInnerPoints[j].ToString().Length - 2).Split(',');  
 80                                    MapPoint pPoint = new MapPoint();  
 81                                    pPoint.X = Convert.ToDouble(pStrPoints[0]);  
 82                                    pPoint.Y = Convert.ToDouble(pStrPoints[1]);  
 83   
 84                                    pPointCollections.Add(pPoint);  
 85                                }  
 86   
 87                                pPointCollection.Add(pPointCollections);  
 88   
 89                            }  
 90                        }  
 91   
 92                        pPolyline.Paths = pPointCollection;  
 93   
 94                        pGeo = pPolyline;  
 95                    }  
 96                }  
 97                else if (jsonObjectGeo.ContainsKey("rings"))  
 98                {  
 99                     JsonValue JsonPoints = jsonObjectGeo["rings"];  
100   
101                ESRI.ArcGIS.Client.Geometry.Polygon pPolygon = new ESRI.ArcGIS.Client.Geometry.Polygon();  
102   
103   
104   
105                ObservableCollection<ESRI.ArcGIS.Client.Geometry.PointCollection> pPointCollection = new ObservableCollection<ESRI.ArcGIS.Client.Geometry.PointCollection>();  
106     
107   
108                if (JsonPoints is JsonArray)  
109                {  
110                    for (int i = 0; i < JsonPoints.Count; i++)  
111                    {  
112                        if (JsonPoints[i] is JsonArray)  
113                        {  
114                            ESRI.ArcGIS.Client.Geometry.PointCollection pPointCollections = new ESRI.ArcGIS.Client.Geometry.PointCollection();  
115   
116                            JsonArray pInnerPoints = JsonPoints[i] as JsonArray;  
117                            for (int j = 0; j < pInnerPoints.Count; j++)  
118                            {  
119                                string pStr = pInnerPoints[j].ToString();  
120   
121                                string[] pStrPoints = pInnerPoints[j].ToString().Substring(1, pInnerPoints[j].ToString().Length - 2).Split(',');  
122                                MapPoint pPoint = new MapPoint();  
123                                pPoint.X = Convert.ToDouble(pStrPoints[0]);  
124                                pPoint.Y = Convert.ToDouble(pStrPoints[1]);  
125   
126                                pPointCollections.Add(pPoint);  
127                            }  
128   
129                            pPointCollection.Add(pPointCollections);  
130   
131                        }  
132                    }  
133   
134                    pPolygon.Rings= pPointCollection;  
135   
136                    pGeo = pPolygon;  
137   
138                }  
139                }  
140            }  
141   
142   
143   
144           pGeo.SpatialReference = pSpatial;  
145   
146            return pGeo;  
147        }

http://blog.csdn.net/arcgisserver_book/article/details/7814024