随机数创建点shp文件
很简单，存个档，以后可以直接用，只有一个属性字段——高程。
1 ISpatialReference pSpatialReference = this.axMapControl1.ActiveView.FocusMap.SpatialReference; 2 string strShapeFolder="C:/"; 3 string strShapeFile = "test.shp"; 4 string shapeFileFullName = strShapeFolder + strShapeFile; 5 IWorkspaceFactory pWorkspaceFactory= new ShapefileWorkspaceFactory(); 6 IFeatureWorkspace pFeatureWorkspace = (IFeatureWorkspace) pWorkspaceFactory.OpenFromFile(strShapeFolder, 0); 7 IFeatureClass pFeatureClass; 8 if (File.Exists(shapeFileFullName)) 9 { 10 pFeatureClass = pFeatureWorkspace.OpenFeatureClass(strShapeFile); 11 IDataset pDataset = (IDataset)pFeatureClass; 12 pDataset.Delete(); 13 } 14 IFields pFields = new FieldsClass(); 15 IFieldsEdit pFieldsEdit = (IFieldsEdit)pFields; 16 17 IField pField = new FieldClass(); 18 IFieldEdit pFieldEdit = (IFieldEdit)pField; 19 pFieldEdit.Name_2 = "SHAPE"; 20 pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry; 21 IGeometryDefEdit pGeoDef = new GeometryDefClass(); 22 IGeometryDefEdit pGeoDefEdit = (IGeometryDefEdit)pGeoDef; 23 pGeoDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint; 24 pGeoDefEdit.SpatialReference_2 = pSpatialReference; //new UnknownCoordinateSystemClass(); 25 pFieldEdit.GeometryDef_2 = pGeoDef; 26 pFieldsEdit.AddField(pField); 27 28 pField = new FieldClass(); 29 pFieldEdit = (IFieldEdit)pField; 30 pFieldEdit.Name_2 = "elevation"; 31 pFieldEdit.Type_2 = esriFieldType.esriFieldTypeDouble; 32 pFieldsEdit.AddField(pField); 33 34 pFeatureClass = pFeatureWorkspace.CreateFeatureClass(strShapeFile, pFields, null, null, esriFeatureType.esriFTSimple, "SHAPE", ""); 35 36 Random rd = new Random(); 37 for (int i = 0; i < 20;i++ ) 38 { 39 IPoint pPoint = new PointClass(); 40 pPoint.X = rd.Next(0, 1000); 41 pPoint.Y = rd.Next(0, 1000); 42 pPoint.Z = rd.Next(0, 100); 43 IFeature pFeature = pFeatureClass.CreateFeature(); 44 pFeature.Shape = pPoint; 45 pFeature.set_Value(pFeature.Fields.FindField("elevation"), pPoint.Z); 46 pFeature.Store(); 47 } 48 IFeatureLayer pFeaturelayer = new FeatureLayerClass(); 49 pFeaturelayer.FeatureClass = pFeatureClass; 50 pFeaturelayer.Name = "layer"; 51 this.axMapControl1.AddLayer(pFeaturelayer); 52 }
