(1条消息) 利用Arcengine 直接加载shp文件

分类专栏： AE二次开发 栅格图像处理 C# OpenGIS

转载自：http://www.gisall.com/html/40/145240-5406.html

 

AE中shp文件的加载

步骤：

1） 创建工作空间工厂

2） 打开shapefile工作空间

3） 打开要素类

4） 创建要素图层

5） 关联图层和要素类

6） 添加到地图空间

具体代码（后面数字为对应的步骤）：具体代码（后面数字为对应的步骤）：

1. new ShapefileWorkspaceFactory (); // 1
2. openFileDialog1.Filter="shaperfile(*.shp)|*.shp";
3. openFileDialog1.InitialDirectory=@"E:\test\文档和数据\Data";
4. openFileDialog1.Multiselect=false;
5. DialogResult pDialogResult=openFileDialog1.ShowDialog ();
6. if(pDialogResult !=DialogResult.OK)
7. return;
8. string pPath=openFileDialog1 .FileName;
9. string pFolder=Path.GetDirectoryName (pPath);
10. string pFileName=Path.GetFileName(pPath);
11. IWorkspace pWorkspace=pWorkspaceFactory .OpenFromFile(pFolder ,0); // 2
12. IFeatureWorkspace pFeatureWorkspace =pWorkspace as IFeatureWorkspace ;
13. IFeatureClass pFC=pFeatureWorkspace .OpenFeatureClass (pFileName ); //3
14. IFeatureLayer pFLayer=new FeatureLayerClass (); // 4
15. pFLayer.FeatureClass =pFC;
16. pFLayer.Name =pFC.AliasName ; // 5
17. ILayer pLayer=pFLayer as ILayer ;
18. IMap pMap=axMapControl1.Map ;
19. pMap.AddLayer(pLayer); // 6
20. axMapControl1.ActiveView .Refresh ();
21. -----------------------------------------------------------------------------------------------------------
22. //添加ArcGIS命名空间
23. using ESRI.ArcGIS.Carto;
24. using ESRI.ArcGIS.Geometry;
25. using ESRI.ArcGIS.Geodatabase;
26. using ESRI.ArcGIS.DataSourcesFile;
27. using ESRI.ArcGIS.DataSourcesRaster;
28. //存储打开文件的全路径
29. string fullFilePath;
30. //设置OpenFileDialog的属性，使其能打开多种类型文件
31. OpenFileDialog penFile = new OpenFileDialog();
32. openFile.Filter = "shape文件(*.shp)|*.shp|";
33. openFile.Filter +="栅格数据(*.jpg,*.bmp,*.tiff)|*.jpg;*.bmp;*.tiff|";
34. openFile.Filter +="地图文档(*.mxd,*.mxt,*.jmf)|*.mxd;*.mxt;*.jmf";
35. openFile.Title = "打开文件";
36. try
37. {
38. if (openFile.ShowDialog() == DialogResult.OK)
39. {
40. fullFilePath = openFile.FileName;
41. //获得文件路径
42. int index = fullFilePath.LastIndexOf("\");
43. string filePath = fullFilePath.Substring(0, index);
44. //获得文件名称
45. string fileNam = fullFilePath.Substring(index + 1);
46. //加载shape文件
47. if (openFile.FilterIndex == 1)
48. {
49. //打开工作空间工厂
50. IWorkspaceFactory workspcFac = new ShapefileWorkspaceFactory();
51. IFeatureWorkspace featureWorkspc;
52. IFeatureLayer featureLay = new FeatureLayerClass();
53. //打开路径
54. featureWorkspc = workspcFac.OpenFromFile(filePath, 0) as IFeatureWorkspace;
55. //打开类要素
56. featureLay.FeatureClass = featureWorkspc.OpenFeatureClass(fileNam);
57. //清空图层
58. axMapControl1.ClearLayers();
59. //添加图层
60. axMapControl1.AddLayer(featureLay);
61. axMapControl1.Refresh();
62. }
63. //加载栅格图像
64. else if (openFile.FilterIndex == 2)
65. {
66. IWorkspaceFactory workspcFac = new RasterWorkspaceFactory();
67. IRasterWorkspace rasterWorkspc;
68. IRasterDataset rasterDatst = new RasterDatasetClass();
69. IRasterLayer rasterLay = new RasterLayerClass();
70. rasterWorkspc = workspcFac.OpenFromFile(filePath, 0) as IRasterWorkspace;
71. rasterDatst = rasterWorkspc.OpenRasterDataset(fileNam );
72. rasterLay.CreateFromDataset(rasterDatst);
73. axMapControl1.ClearLayers();
74. axMapControl1.AddLayer(rasterLay);
75. axMapControl1.Refresh();
76. }
77. //加载地图文档
78. else if (openFile.FilterIndex == 3)
79. {
80. IMapDocument mapDoc = new MapDocumentClass();
81. mapDoc.Open(filePath ,"");
82. axMapControl1.ClearLayers();
83. for (int i = 0; i < mapDoc.MapCount - 1; i++)
84. {
85. axMapControl1.Map =mapDoc.get_Map (i);
86. }
87. IActiveView activeViw = axMapControl1.Map as IActiveView;
88. activeViw.Extent = axMapControl1.FullExtent;
89. axMapControl1.Refresh();
90. }
91. }
92. }
93. catch (Exception ex)
94. {
95. MessageBox.Show(ex.Message.ToString ());
96. }
97. }
98. }