将shp文件导入到GeoDatabase中

(C#语言)

private void ImportFeatureClassToNewWorkSpace(IFeatureDataset apFD)
        {
            //打开SHP文件
            string StrFilter = "SHP文件(.shp) | *.shp";
            string ImportShapeFileName = OpenFile(StrFilter);
            if (ImportShapeFileName == "") { return; }
            string ImportFileShortName = System.IO.Path.GetFileNameWithoutExtension(ImportShapeFileName);
            string ImportFilePath = System.IO.Path.GetDirectoryName(ImportShapeFileName);

            IWorkspaceName pInWorkspaceName;
            IFeatureDatasetName pOutFeatureDSName;
            IFeatureClassName pInFeatureClassName;
            IDatasetName pInDatasetName;
            IFeatureClassName pOutFeatureClassName;
            IDatasetName pOutDatasetName;
            long iCounter;
            IFields pOutFields, pInFields;
            IFieldChecker pFieldChecker;
            IField pGeoField;
            IGeometryDef pOutGeometryDef;
            IGeometryDefEdit pOutGeometryDefEdit;
            IName pName;
            IFeatureClass pInFeatureClass;
            IFeatureDataConverter pShpToClsConverter;
            IEnumFieldError pEnumFieldError = null;

            //得到一个输入SHP文件的工作空间,
            pInWorkspaceName = new WorkspaceNameClass();
            pInWorkspaceName.PathName = ImportFilePath;
            pInWorkspaceName.WorkspaceFactoryProgID = "esriCore.ShapefileWorkspaceFactory.1";
            //创建一个新的要素类名称,目的是为了以来PNAME接口的OPEN方法打开SHP文件
            pInFeatureClassName = new FeatureClassNameClass();
            pInDatasetName = (IDatasetName)pInFeatureClassName;
            pInDatasetName.Name = ImportFileShortName;
            pInDatasetName.WorkspaceName = pInWorkspaceName;
            //打开一个SHP文件,将要读取它的字段集合
            pName = (IName)pInFeatureClassName;
            pInFeatureClass = (IFeatureClass)pName.Open();
            //通过FIELDCHECKER检查字段的合法性,为输入要素类获得字段集合
            pInFields = pInFeatureClass.Fields;
            pFieldChecker = new FieldChecker();
            pFieldChecker.Validate(pInFields, out pEnumFieldError, out pOutFields);
            //通过循环查找几何字段
            pGeoField = null;
            for (iCounter = 0; iCounter < pOutFields.FieldCount; iCounter++)
            {
                if (pOutFields.get_Field((int)iCounter).Type == esriFieldType.esriFieldTypeGeometry)
                {
                    pGeoField = pOutFields.get_Field((int)iCounter);
                    break;
                }
            }
            //得到几何字段的几何定义
            pOutGeometryDef = pGeoField.GeometryDef;
            //设置几何字段的空间参考和网格
            pOutGeometryDefEdit = (IGeometryDefEdit)pOutGeometryDef;
            pOutGeometryDefEdit.GridCount_2 = 1;
            pOutGeometryDefEdit.set_GridSize(0, 1500000);

            //创建一个新的要素类名称作为可用的参数
            pOutFeatureClassName = new FeatureClassNameClass();
            pOutDatasetName = (IDatasetName)pOutFeatureClassName;
            pOutDatasetName.Name = pInDatasetName.Name;
            
            //创建一个新的数据集名称作为可用的参数
            pOutFeatureDSName = (IFeatureDatasetName)new FeatureDatasetName();
            //因为ConvertFeatureClass需要传入一个IFeatureDatasetName的参数,通过它确定导入生成的要素类的工作空间和要素集合
            //情况一
            //如果本函数的参数(IFeatureDataset)是一个确切的值,那么将它转换成IFeatureDatasetName接口就可以了。因为ConvertFeatureClass根据该接口就
            //可以确定工作空间和要素集合,IFeatureClassName就可以不考虑上述问题
            //情况二
            //如果本函数的参数(IFeatureDataset)是一个NULL值,表示要创建独立要素类,
            //那么ConvertFeatureClass函数无法根据IFeatureDatasetName参数确定工作空间和要素集合
            //这个时候需要IFeatureClassName参数确定工作空间和要素集合

            //如果参数的值是NULL,说明要创建独立要素类
            if (apFD == null)
            {
                //创建一个不存在的要素集合pFDN,通过它将IFeatureClassName和工作空间连接起来,而ConvertFeatureClass函数并不使用该变量作为参数,
                IFeatureDatasetName pFDN = new FeatureDatasetNameClass();
                IDatasetName pDN = (IDatasetName)pFDN;
                IDataset pDS = (IDataset)pWorkspace;
                pDN.WorkspaceName = (IWorkspaceName)pDS.FullName;
                pDN.Name = pDS.Name;
                pOutFeatureClassName.FeatureDatasetName = (IDatasetName)pFDN;
                //将pOutFeatureDSName设置为Null,将它做为参数给ConvertFeatureClass函数,因为IFeatureClassName本身已经和工作空间关联了,生成的
                //要素类在工作空间的根目录下,即独立要素类
                pOutFeatureDSName = null;
                
            }
            else//创建的要素类是在给定的参数(要素集合)下
            {
                pOutFeatureDSName = (IFeatureDatasetName)apFD.FullName;
            }
            
            //开始导入
            pShpToClsConverter = new FeatureDataConverterClass();
            pShpToClsConverter.ConvertFeatureClass(pInFeatureClassName, null, pOutFeatureDSName, pOutFeatureClassName, pOutGeometryDef, pOutFields, "", 1000, 0);
            MessageBox.Show("导入成功","系统提示");
        }

posted @ 2012-05-02 16:20  LinHugh  阅读(2163)  评论(0编辑  收藏  举报