AE 打开各种格式文件

// <summary>
        /// 打开ShapeFile文件
        /// </summary>
        /// <param name="filePath">文件路径</param>
        /// <param name="fileName">文件名</param>
        /// <returns>IFeatureClass</returns>
        public IFeatureClass GetShpFile(string filePath, string fileName)
        {
            IFeatureWorkspace featureWorkspace;
            IFeatureClass featureClass;

            featureWorkspace = GetShapeWorkspace(filePath) as IFeatureWorkspace;

            try
            {
                featureClass = featureWorkspace.OpenFeatureClass(fileName);
            }
            catch
            {
                featureClass = null;
            }

            ReleaseAE.ReleaseAEObject(featureWorkspace);

            return featureClass;
        }

        /// <summary>
        /// 打开Raster文件（如果数据格式为是ESRI GRID，fileName不带后缀，若为tiff则带后缀.tif）
        /// </summary>
        /// <param name="filePath">文件路径</param>
        /// <param name="fileName">文件名</param>
        /// <returns>IRaster</returns>
        public IRaster GetRasterFile(string filePath, string fileName)
        {
            IRasterWorkspace2 rasterWorkspace;
            IRasterDataset rasterDataSet;
            IRasterLayer rasterLayer;
            IRaster raster;

            rasterWorkspace = GetRasterWorkspace(filePath) as IRasterWorkspace2;

            try
            {
                rasterDataSet = rasterWorkspace.OpenRasterDataset(fileName);

                rasterLayer = new RasterLayerClass();
                rasterLayer.CreateFromDataset(rasterDataSet);

                raster = rasterLayer.Raster;

                //ReleaseAE.ReleaseAEObject(rasterDataSet);
                //ReleaseAE.ReleaseAEObject(rasterLayer);
            }
            catch
            {
                raster = null;
            }

            ReleaseAE.ReleaseAEObject(rasterWorkspace);

            return raster;
        }

        /// <summary>
        /// 打开PersonalGeodatabase里的数据要素
        /// </summary>
        /// <param name="mdbFile">mdb文件（带后缀.mdb）</param>
        /// <param name="featureName">要素名</param>
        /// <returns></returns>
        public IFeatureClass GetPersonalGeodatabase(string mdbFile, string featureName)
        {
            IFeatureWorkspace featureWorkspace;
            IFeatureClass featureClass;

            workspaceFactory = new AccessWorkspaceFactoryClass();
            featureWorkspace = workspaceFactory.OpenFromFile(mdbFile, 0) as IFeatureWorkspace;
            featureClass = featureWorkspace.OpenFeatureClass(featureName);

            ReleaseAE.ReleaseAEObject(featureWorkspace);
            ReleaseAE.ReleaseAEObject(workspaceFactory);

            return featureClass;
        }

        /// <summary>
        /// 打开FileGeodatabase里的数据要素
        /// </summary>
        /// <param name="gdbFile">gdb文件</param>
        /// <param name="featureName">要素名</param>
        /// <returns></returns>
        public IFeatureClass GetFileGeodatabase(string gdbFile, string featureName)
        {
            IFeatureWorkspace featureWorkspace;
            IFeatureClass featureClass;

            workspaceFactory = new FileGDBWorkspaceFactoryClass();
            featureWorkspace = workspaceFactory.OpenFromFile(gdbFile, 0) as IFeatureWorkspace;
            featureClass = featureWorkspace.OpenFeatureClass(featureName);

            ReleaseAE.ReleaseAEObject(featureWorkspace);
            ReleaseAE.ReleaseAEObject(workspaceFactory);

            return featureClass;
        }

        /// <summary>
        /// 打开TIN文件
        /// </summary>
        /// <param name="tinFile">文件路径</param>
        /// <param name="fileName">文件名</param>
        /// <returns>Tin</returns>
        public ITin GetTinFile(string tinFile, string fileName)
        {
            ITinWorkspace pTinWorkspace;
            ITin pTin;
            workspaceFactory = new TinWorkspaceFactoryClass();
            pTinWorkspace = workspaceFactory.OpenFromFile(tinFile, 0) as ITinWorkspace;
            pTin = pTinWorkspace.OpenTin(fileName);

            ReleaseAE.ReleaseAEObject(pTinWorkspace);
            ReleaseAE.ReleaseAEObject(workspaceFactory);

            return pTin;
        }

        /// <summary>
        /// 打开CAD文件（featurename要带扩展名）
        /// </summary>
        /// <param name="cadFile">文件路径</param>
        /// <param name="featureName">文件名</param>
        /// <returns>featureClass</returns>
        //public IFeatureClass GetCADFile(string cadFile, string featureName)
        //{
        //    //IFeatureWorkspace featureWorkspace;
        //    //IFeatureClass featureClass;

        //    //workspaceFactory = new CadWorkspaceFactoryClass();
        //    //featureWorkspace = workspaceFactory.OpenFromFile(cadFile, 0) as IFeatureWorkspace;
        //    //featureClass = featureWorkspace.OpenFeatureClass(featureName);
        //    //return featureClass;
        //}

        /// <summary>
        /// 打开数据表格
        /// </summary>
        /// <param name="connectionString">连接数据库字符串</param>
        /// <param name="tableName">表名</param>
        /// <returns>table</returns>
        public ITable GetRDBMS(string connectionString, string tableName)
        {
            IFeatureWorkspace featureWorkspace;

            workspaceFactory = new OLEDBWorkspaceFactoryClass();
            IPropertySet pPropset = new PropertySetClass();
            ITable pTable;
            pPropset.SetProperties("CONNECTSTRING", connectionString);
            featureWorkspace = workspaceFactory.Open(pPropset,0) as IFeatureWorkspace;
            pTable = featureWorkspace.OpenTable(tableName);

            ReleaseAE.ReleaseAEObject(featureWorkspace);
            ReleaseAE.ReleaseAEObject(pPropset);

            return pTable;
        }

        /// <summary>
        /// 创建内存工作空间Name
        /// </summary>
        /// <param name="workspacename">工作空间名称</param>
        /// <returns>工作空间Name</returns>
        public IWorkspaceName CreatMemoryWorkspaceName(string workspacename)
        {
            IWorkspaceName workspaceName;

            workspaceFactory = new InMemoryWorkspaceFactoryClass();

            workspaceName = workspaceFactory.Create("d:\\", workspacename, null, 0);

            ReleaseAE.ReleaseAEObject(workspaceFactory);

            return workspaceName;
        }

        /// <summary>
        /// 创建内存工作空间
        /// </summary>
        /// <param name="workspacename">工作空间名称</param>
        /// <returns>工作空间类型IWorkspace </returns>
        public IWorkspace CreatMemoryWorkspace(string workspacename)
        {
            IWorkspaceName workspaceName;
            IName name;
            IWorkspace workspace;

            workspaceName = CreatMemoryWorkspaceName(workspacename);

            name = workspaceName as IName;
            name.NameString = workspacename;
            workspace = name.Open() as IWorkspace;

            ReleaseAE.ReleaseAEObject(workspaceName);
            ReleaseAE.ReleaseAEObject(name);

            return workspace;
        }

        /// <summary>
        /// 创建本地磁盘矢量工作空间
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public IWorkspace GetShapeWorkspace(string filePath)
        {
            IWorkspace workspace;

            workspaceFactory = new ShapefileWorkspaceFactoryClass();

            workspace = workspaceFactory.OpenFromFile(filePath, 0);

            ReleaseAE.ReleaseAEObject(workspaceFactory);
            workspaceFactory = null;

            return workspace;
        }

        public IWorkspaceName GetShapeWorkspaceName(string spaceName)
        {
            IWorkspaceName workspaceName;

            workspaceFactory = new ShapefileWorkspaceFactoryClass();

            workspaceName = workspaceFactory.Create(Path.GetTempPath(), spaceName, null, 0);

            ReleaseAE.ReleaseAEObject(workspaceFactory);

            return workspaceName;
        }

        /// <summary>
        /// 创建本地磁盘栅格工作空间
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public IWorkspace GetRasterWorkspace(string filePath)
        {
            IWorkspace workspace;

            workspaceFactory = new RasterWorkspaceFactoryClass();
            workspace = workspaceFactory.OpenFromFile(filePath, 0);

            ReleaseAE.ReleaseAEObject(workspaceFactory);

            return workspace;
        }