ArcEngine打开各种格式文件

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shapefile、 raster、PersonalGeodatabase、FileGeodatabase、TIN、CAD、access数据表

      /// <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;
      }

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