Marks the foreign key to be dropped the next time its parent Table object is altered by the Alter method.
命名空间: Microsoft.SqlServer.Management.Smo
程序集: Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)
语法
声明
Public Sub MarkForDrop ( _
dropOnAlter As Boolean _
)
public void MarkForDrop (
bool dropOnAlter
)
public:
virtual void MarkForDrop (
bool dropOnAlter
) sealed
public final void MarkForDrop (
boolean dropOnAlter
)
public final function MarkForDrop (
dropOnAlter : boolean
)
参数
dropOnAlter
A Boolean value that specifies whether to drop the foreign key when its parent Table object is altered with the Alter method.If True, the foreign key is dropped when the Alter method is run on the parent Table object.
If False, the foreign key is dropped immediately.
备注
仅 Microsoft .NET Framework 的 2.0 版本支持此命名空间、类或成员。
示例
How to: Create, Alter, and Remove a Foreign Key in Visual Basic .NET
线程安全
Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
平台
开发平台
有关支持的平台列表,请参阅安装 SQL Server 2005 的硬件和软件要求。
目标平台
有关支持的平台列表,请参阅安装 SQL Server 2005 的硬件和软件要求。
请参阅
参考
ForeignKey Class
ForeignKey Members
Microsoft.SqlServer.Management.Smo Namespace
其他资源
Creating, Altering, and Removing Foreign Keys
创建和修改 FOREIGN KEY 约束
CREATE TABLE (Transact-SQL)