ArcGISEngine创建和删除Shp文件

1、创建Shp文件

IFeatureWorkspace接口的CreateFeatureClass()方法可以产生一个要素类，该要素类被直接放置在工作空间中。

        private void CreateShp()        {            //打开shp工作空间            string fileName = "Some";//shp文件名            string filePath = @"E:\HiOS\TestShp";//shp文件位置            IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();//文件夹            //IWorkspaceFactory pWorkspaceFactory = new AccessWorkspaceFactoryClass();//Access格式的个人地理数据库            IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(filePath, 0);            IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;            //设置geometry definition            IGeometryDef pGeometryDef = new GeometryDefClass();            IGeometryDefEdit pGeometryDefEdit = pGeometryDef as IGeometryDefEdit;            pGeometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolyline;//点、线、面            pGeometryDefEdit.SpatialReference_2 = axMapControl1.SpatialReference;            //建立Shp文件的字段集            IFields pFields = new FieldsClass();            IFieldsEdit pFieldsEdit = pFields as IFieldsEdit;            IField pField = new FieldClass();            IFieldEdit pFieldEdit = pField as IFieldEdit;            //建立shape（几何）字段            pFieldEdit.Name_2 = "Shape";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;            pFieldEdit.GeometryDef_2 = pGeometryDef;            pFieldsEdit.AddField(pField);            //新建ObjectID字段            pField = new FieldClass();            pFieldEdit = pField as IFieldEdit;            pFieldEdit.Name_2 = "ObjectID";            pFieldEdit.AliasName_2 = "id";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeSmallInteger;            pFieldsEdit.AddField(pField);            //新建Name字段            pField = new FieldClass();            pFieldEdit = pField as IFieldEdit;            pFieldEdit.Length_2 = 32;            pFieldEdit.Name_2 = "Name";            pFieldEdit.AliasName_2 = "Name";            pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString;            pFieldsEdit.AddField(pField);            //最后创建Shp文件            IFeatureClass pFeatureClass = pFeatureWorkspace.CreateFeatureClass(fileName + ".shp", pFields, null, null, esriFeatureType.esriFTSimple, "Shape", "");        }

在创建字段的时候，会默认创建FID字段。显示声明字段类型为esriFieldType.esriFieldTypeOID，该字段不会被创建。

2、删除shp文件

        private void DeleteShp()        {            //打开shp工作空间            string fileName = "Some";//shp文件名            string filePath = @"E:\HiOS\TestShp";//shp文件位置            IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();//文件夹            //IWorkspaceFactory pWorkspaceFactory = new AccessWorkspaceFactoryClass();//Access格式的个人地理数据库            IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(filePath, 0);            IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;            IFeatureClass pFeatureClass = pFeatureWorkspace.OpenFeatureClass(fileName);//fileName为文件名(不包含路径)            IDataset pFeaDataset = pFeatureClass as IDataset;            pFeaDataset.Delete();        }

OpenFeatureClass()方法可用于打开一个已经存在的要素类。