// <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;
}