1     public class GoogleMap : TiledMapServiceLayer
 2     {
 3         private const double cornerCoordinate = 20037508.342787;
 4 
 5         public override void Initialize()
 6         {
 7             this.FullExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(-20037508.342787, -20037508.342787, 20037508.342787, 20037508.342787);
 8             {
 9                 SpatialReference = new ESRI.ArcGIS.Client.Geometry.SpatialReference(102113);
10             };
11             this.SpatialReference = new ESRI.ArcGIS.Client.Geometry.SpatialReference(102113);
12             this.TileInfo = new TileInfo()
13             {
14                 Height = 256,
15                 Width = 256,
16                 Origin = new ESRI.ArcGIS.Client.Geometry.MapPoint(-20037508.342787, 20037508.342787)
17                 {
18                     SpatialReference = new ESRI.ArcGIS.Client.Geometry.SpatialReference(102113)
19                 },
20                 Lods = new Lod[11]
21             };
22             double resolution = cornerCoordinate * 2 / 256;
23             for (int i = 0; i < TileInfo.Lods.Length; i++)
24             {
25                 TileInfo.Lods[i] = new Lod() { Resolution = resolution };
26                 resolution /= 2;
27             }
28             base.Initialize();
29         }
30         public override string GetTileUrl(int level, int row, int col)
31         {
32             string baseUrl = "http://10.223.12.233:88/2009_7DI/zoom{0}/{1}_{2}.png";
33             return string.Format(baseUrl, level + 1, col, row);
34         }
35     }