Geodatabase - 创建要素类.

　　在NET中，会遇到以“_2”结尾的属性，这些属性是可写的.

　　以下代码在已有工作空间下,创建一个新的点要素类:

 1 //例如,personalDBPath=@"G:\doc\gis\1.400\data\pdb.mdb", featureClassName="newF"

 2 public void CreateFeatureClass(string personalDBPath, string featureClassName) {

 3             //创建点类型.

 4             //空间参考.

 5             ESRI.ArcGIS.Geometry.ISpatialReference sRef = mapCtrl_main.ActiveView.FocusMap.SpatialReference;

 6 

 7             ESRI.ArcGIS.Geodatabase.IGeometryDef geoDef = new ESRI.ArcGIS.Geodatabase.GeometryDefClass();

 8             ESRI.ArcGIS.Geodatabase.IGeometryDefEdit geoEdit = (ESRI.ArcGIS.Geodatabase.IGeometryDefEdit)geoDef;

 9             geoEdit.GeometryType_2 = ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint;

10             geoEdit.SpatialReference_2 = sRef;

11 

12             //字段集.

13             ESRI.ArcGIS.Geodatabase.IFields fields = new ESRI.ArcGIS.Geodatabase.FieldsClass();

14             ESRI.ArcGIS.Geodatabase.IFieldsEdit fieldsEdit = (ESRI.ArcGIS.Geodatabase.IFieldsEdit)fields;

15 

16             //逐一添加字段.

17 

18             ESRI.ArcGIS.Geodatabase.IField field = new ESRI.ArcGIS.Geodatabase.FieldClass();

19             ESRI.ArcGIS.Geodatabase.IFieldEdit fieldEdit = (ESRI.ArcGIS.Geodatabase.IFieldEdit)field;

20             fieldEdit.Name_2 = "SHAPE";

21             fieldEdit.Type_2 = ESRI.ArcGIS.Geodatabase.esriFieldType.esriFieldTypeGeometry;

22             fieldEdit.GeometryDef_2 = geoDef;

23             fieldsEdit.AddField(field);

24 

25             field = new ESRI.ArcGIS.Geodatabase.FieldClass();

26             fieldEdit = (ESRI.ArcGIS.Geodatabase.IFieldEdit)field;

27             fieldEdit.Name_2 = "STCD";

28             fieldEdit.Type_2 = ESRI.ArcGIS.Geodatabase.esriFieldType.esriFieldTypeString;

29             fieldsEdit.AddField(field);

30 

31             field = new ESRI.ArcGIS.Geodatabase.FieldClass();

32             fieldEdit = (ESRI.ArcGIS.Geodatabase.IFieldEdit)field;

33             fieldEdit.Name_2 = "SLM10";

34             fieldEdit.Type_2 = ESRI.ArcGIS.Geodatabase.esriFieldType.esriFieldTypeString;

35             fieldsEdit.AddField(field);

36 

37             field = new ESRI.ArcGIS.Geodatabase.FieldClass();

38             fieldEdit = (ESRI.ArcGIS.Geodatabase.IFieldEdit)field;

39             fieldEdit.Name_2 = "SLM20";

40             fieldEdit.Type_2 = ESRI.ArcGIS.Geodatabase.esriFieldType.esriFieldTypeString;

41             fieldsEdit.AddField(field);

42 

43             field = new ESRI.ArcGIS.Geodatabase.FieldClass();

44             fieldEdit = (ESRI.ArcGIS.Geodatabase.IFieldEdit)field;

45             fieldEdit.Name_2 = "SLM40";

46             fieldEdit.Type_2 = ESRI.ArcGIS.Geodatabase.esriFieldType.esriFieldTypeString;

47             fieldsEdit.AddField(field);

48 

49             //通过已有工作空间创建.

50             ESRI.ArcGIS.Geodatabase.IWorkspaceFactory wsf = new ESRI.ArcGIS.DataSourcesGDB.AccessWorkspaceFactory();

51             ESRI.ArcGIS.Geodatabase.IFeatureWorkspace fws = (ESRI.ArcGIS.Geodatabase.IFeatureWorkspace)wsf.OpenFromFile(personalDBPath, 0);

52             ESRI.ArcGIS.Geodatabase.IFeatureClass fc = fws.CreateFeatureClass(featureClassName, fields, null, null, ESRI.ArcGIS.Geodatabase.esriFeatureType.esriFTSimple, "SHAPE", null);

53 }