The IDatasetContainer interface lets you move datasets between feature datasets and workspaces—both objects implement the interface.
Note that when moving feature classes into a feature dataset, the spatial reference of the source feature class must match the spatial reference of the target feature dataset into which it is being moved.
IDatasetContainer让你能够在工作区间与FeatureDataset之间移动数据集对象。IDatasetContainer只有AddDataset一个方法。要注意的一点是：在移动要素类进入要素数据集时，源数据集的空间参考要与目标数据集的空间参考匹配。
Public Sub MoveDataset()Sub MoveDataset(pFeatureDataset As IFeatureDataset, _
pDataset As IDataset, bRequireStandalone As Boolean) Dim pDatasetContainer As IDatasetContainer If bRequireStandalone Then Set pDatasetContainer = pFeatureDataset.Workspace Else Set pDatasetContainer = pFeatureDataset End If pDatasetContainer.AddDataset pDataset
End Sub