C#Arcengine不使用gp服务，从一个GDB数据库中复制一个图层，然后粘贴到另一个GDB数据库

以下是使用C# ArcObjects实现从一个GDB数据库中复制一个图层，然后粘贴到另一个GDB数据库的示例代码：

// 打开源GDB数据库
IWorkspaceFactory sourceWorkspaceFactory = new FileGDBWorkspaceFactory();
IWorkspace sourceWorkspace = sourceWorkspaceFactory.OpenFromFile("C:\path\to\source.gdb", 0);

// 打开目标GDB数据库
IWorkspaceFactory targetWorkspaceFactory = new FileGDBWorkspaceFactory();
IWorkspace targetWorkspace = targetWorkspaceFactory.OpenFromFile("C:\path\to\target.gdb", 0);

// 打开源图层
IFeatureWorkspace sourceFeatureWorkspace = (IFeatureWorkspace)sourceWorkspace;
IFeatureClass sourceFeatureClass = sourceFeatureWorkspace.OpenFeatureClass("source_layer");

// 创建目标图层
IFeatureWorkspace targetFeatureWorkspace = (IFeatureWorkspace)targetWorkspace;
IObjectCopy objectCopy = new ObjectCopyClass();
IFeatureClass targetFeatureClass = objectCopy.Copy(sourceFeatureClass, targetFeatureWorkspace);

// 保存目标图层
IDataset targetDataset = (IDataset)targetFeatureClass;
targetDataset.Workspace.ExecuteSQL("CREATE INDEX idx_" + targetFeatureClass.AliasName + "_Shape ON " + targetFeatureClass.AliasName + " USING GEOMETRY (Shape)");
targetDataset.Workspace.ExecuteSQL("ANALYZE " + targetFeatureClass.AliasName + " COMPUTE STATISTICS");

这段代码首先打开源GDB数据库和目标GDB数据库。然后，它打开源图层并将其复制到目标GDB数据库中。最后，它创建索引并统计目标图层以优化性能。注意，此代码假定源图层和目标图层都具有相同的结构和字段。