ForeignKey.DeleteAction 属性

Gets or sets the action taken when the row that is referenced by the foreign key is deleted.

命名空间:  Microsoft.SqlServer.Management.Smo
程序集:  Microsoft.SqlServer.Smo(在 Microsoft.SqlServer.Smo.dll 中)

语法

声明
<SfcPropertyAttribute(SfcPropertyFlags.None Or SfcPropertyFlags.ReadOnlyAfterCreation Or SfcPropertyFlags.Standalone Or SfcPropertyFlags.SqlAzureDatabase Or SfcPropertyFlags.Design)> _
Public Property DeleteAction As ForeignKeyAction 
    Get 
    Set
用法
Dim instance As ForeignKey 
Dim value As ForeignKeyAction 

value = instance.DeleteAction

instance.DeleteAction = value
[SfcPropertyAttribute(SfcPropertyFlags.None|SfcPropertyFlags.ReadOnlyAfterCreation|SfcPropertyFlags.Standalone|SfcPropertyFlags.SqlAzureDatabase|SfcPropertyFlags.Design)]
public ForeignKeyAction DeleteAction { get; set; }
[SfcPropertyAttribute(SfcPropertyFlags::None|SfcPropertyFlags::ReadOnlyAfterCreation|SfcPropertyFlags::Standalone|SfcPropertyFlags::SqlAzureDatabase|SfcPropertyFlags::Design)]
public:
property ForeignKeyAction DeleteAction {
    ForeignKeyAction get ();
    void set (ForeignKeyAction value);
}
[<SfcPropertyAttribute(SfcPropertyFlags.None|SfcPropertyFlags.ReadOnlyAfterCreation|SfcPropertyFlags.Standalone|SfcPropertyFlags.SqlAzureDatabase|SfcPropertyFlags.Design)>]
member DeleteAction : ForeignKeyAction with get, set
function get DeleteAction () : ForeignKeyAction 
function set DeleteAction (value : ForeignKeyAction)

属性值

类型:Microsoft.SqlServer.Management.Smo.ForeignKeyAction
A ForeignKeyAction value that specifies the action taken when the row that is referenced by the foreign key is deleted.

注释

The DeleteAction property can be used to specify that the action is cascaded. This means that the foreign key row is also deleted. You can also set the foreign key to the default value, or set it to Null.

示例

创建、更改和删除外键

请参阅

参考

ForeignKey 类

Microsoft.SqlServer.Management.Smo 命名空间

其他资源

创建和修改 FOREIGN KEY 约束

CREATE TABLE (Transact-SQL)