ReferenceCollectionBuilder.IsRequired(Boolean) 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Metadata.Builders

程序集:

Microsoft.EntityFrameworkCore.dll

程序包:

Microsoft.EntityFrameworkCore v10.0.0

Source:

ReferenceCollectionBuilder.cs

配置这是否为必需关系（即是否可以分配 null外键属性）。

public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.ReferenceCollectionBuilder IsRequired(bool required = true);

abstract member IsRequired : bool -> Microsoft.EntityFrameworkCore.Metadata.Builders.ReferenceCollectionBuilder
override this.IsRequired : bool -> Microsoft.EntityFrameworkCore.Metadata.Builders.ReferenceCollectionBuilder

Public Overridable Function IsRequired (Optional required As Boolean = true) As ReferenceCollectionBuilder

参数

required

Boolean

一个值，该值指示这是否为必需关系。

返回

ReferenceCollectionBuilder

同一个生成器实例，以便可以链接多个配置调用。