一个枚举，用于指定对实体执行的更新操作。An enumeration used to specify the update operations that were performed on an entity.
此枚举有一个 FlagsAttribute 属性，允许按位组合成员值。
public enum class UpdateOperations
[System.Flags] public enum UpdateOperations
type UpdateOperations =
Public Enum UpdateOperations
|Add Add Add Add||1||
添加了实体。The entity was added.
|Change Change Change Change||2||
修改了实体。The entity was modified.
|Delete Delete Delete Delete||4||
删除了实体。The entity was deleted.
|None None None None||0||
未对资源执行任何操作。No operations were performed on the resource.
此枚举用于拦截器, 用于确定在存储实体之前对其执行的更改类型。This enumeration is used on interceptors to determine what kind of changes were performed on entities before they were saved.