转 ArcGIS Runtime 加载SHAPE数据的另一种方式-动态图层 .

ArcGIS 10.1中有一个新的功能就是动态图层（NOT DynamicLayer，动态地图服务），该动态图层简单的说，就是向一个动态服务注册一个工作空间，该工作空间中含有shape，栅格等数据，这样的话，客户端可以通过API获取这个工作空间下的所有shape数据，并可以对其进行渲染。ArcGIS Runtime和ArcGIS Server的架构类似，而API也十分相像，ArcGIS Runtime加载shape数据除了我们前面介绍的方法，还可以通过动态图层这样的方式，原理和ArcGIS Server的一样，现在说下步骤：
         加载MPK(相当于ArcGIS Server的动态地图）；

         注册一个包含shape数据的工作空间，也就是一个目录；

          遍历该目录，获取shape数据，然后加载。

核心代码：

01.OpenFileDialog openFileDialog = new OpenFileDialog();
02.           openFileDialog.Filter = "Image files (*.bmp,*.png,*.sid,*.tif)|*.bmp;*.png;*.sid;*.tif;";
03.           openFileDialog.RestoreDirectory = true;
04.           openFileDialog.Multiselect = true;
05.           if (openFileDialog.ShowDialog() == true)
06.           {
07.               try
08.               {
09.                   // // 添加栅格
10.                   AddFileDatasetToDynamicMapServiceLayer(WorkspaceFactoryType.Raster,
11.                      Path.GetDirectoryName(openFileDialog.FileName),
12.                      new List<string>(openFileDialog.SafeFileNames),
13.                      arcGisLocalDynamicMapServiceLayer =>
14.                      {
15.
16.                          _map.Layers.Add(arcGisLocalDynamicMapServiceLayer);
17.                      });
18.               }
19.               catch (Exception ex)
20.               {
21.                   MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
22.               }
23.           }

01.public void AddFileDatasetToDynamicMapServiceLayer(WorkspaceFactoryType workspaceType, string directoryPath, List<string> fileNames, Action<ArcGISLocalDynamicMapServiceLayer> callback)
02.      {
03.          try
04.          {
05.              // 产生UID
06.              string uniqueId = Guid.NewGuid().ToString();
07.
08.              // 工作空间信息
09.              WorkspaceInfo workspaceInfo = new WorkspaceInfo(uniqueId, workspaceType, "DATABASE=" + directoryPath);
10.
11.              // 本地服务，该方法是NET3新特性
12.              LocalMapService localMapService = new LocalMapService
13.              {
14.
15.                  Path = _emptyMpkPath,
16.
17.                  //这个属性很关键
18.                  EnableDynamicLayers = true
19.              };
20.
21.              // 给动态地图服务注册工作空间
22.              localMapService.DynamicWorkspaces.Add(workspaceInfo);
23.
24.              // 异步方法在ArcGIS Runtime中处处可见
25.              localMapService.StartAsync(x =>
26.              {
27.
28.                  ArcGISLocalDynamicMapServiceLayer arcGisLocalDynamicMapServiceLayer = null;

4000
29.
30.
31.                  arcGisLocalDynamicMapServiceLayer = new ArcGISLocalDynamicMapServiceLayer(localMapService)
32.                  {
33.                      // 工作空间ID
34.                      ID = "Workspace: " + (new DirectoryInfo(directoryPath)).Name,
35.
36.                      //动态图层
37.                      EnableDynamicLayers = true,
38.                  };
39.
40.
41.                  arcGisLocalDynamicMapServiceLayer.Initialized += (s, e) =>
42.                  {
43.                      // 动态图层集合
44.                      DynamicLayerInfoCollection dynamicLayerInfoCollection = new DynamicLayerInfoCollection();
45.
46.                      // 符号
47.                      LayerDrawingOptionsCollection layerDrawingOptionsCollection = new LayerDrawingOptionsCollection();
48.
49.
50.                      int counter = 0;
51.                      foreach (string fileName in fileNames)
52.                      {
53.
54.                          DynamicLayerInfo dynamicLayerInfo = new DynamicLayerInfo
55.                          {
56.
57.                              ID = counter,
58.
59.
60.                              Name = "Dataset: " + fileName
61.                          };
62.
63.
64.                          DataSource dataSource = null;
65.
66.
67.                          if (workspaceInfo.FactoryType == WorkspaceFactoryType.Raster)
68.                          {
69.
70.                              dataSource = new RasterDataSource
71.                              {
72.
73.                                  DataSourceName = fileName,
74.
75.
76.                                  WorkspaceID = workspaceInfo.Id
77.                              };
78.                          }
79.                          else
80.                          {
81.
82.                              dataSource = new TableDataSource
83.                              {
84.
85.                                  DataSourceName = fileName,
86.
87.
88.                                  WorkspaceID = workspaceInfo.Id
89.                              };
90.
91.
92.                              var layerDrawOpt = new LayerDrawingOptions()
93.                              {
94.
95.                                  LayerID = counter,
96.
97.                                  // 简单渲染
98.                                  Renderer = new SimpleRenderer() { Symbol = new SimpleMarkerSymbol() { } },
99.                              };
100.
101.
102.                              layerDrawingOptionsCollection.Add(layerDrawOpt);
103.                          }
104.
105.
106.                          dynamicLayerInfo.Source = new LayerDataSource { DataSource = dataSource };
107.
108.
109.                          dynamicLayerInfoCollection.Add(dynamicLayerInfo);
110.
111.
112.                          counter++;
113.                      }
114.
115.
116.                      arcGisLocalDynamicMapServiceLayer.DynamicLayerInfos = dynamicLayerInfoCollection;
117.
118.                      // 这两个一一对应
119.                      arcGisLocalDynamicMapServiceLayer.LayerDrawingOptions = layerDrawingOptionsCollection;
120.
121.
122.                      arcGisLocalDynamicMapServiceLayer.Refresh();
123.
124.
125.                      callback(arcGisLocalDynamicMapServiceLayer);
126.                  };
127.
128.
129.                  arcGisLocalDynamicMapServiceLayer.Initialize();
130.              });
131.          }
132.          catch (Exception ex)
133.          {
134.              MessageBox.Show(ex.Message,"Error",MessageBoxButton.OK,MessageBoxImage.Error);
135.          }
136.      }

转自:http://blog.csdn.net/arcgis_cs/article/details/7858477