EntityProjectionExpression.MakeNullable 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Query

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v7.0.0

使投影中的实体实例可为 null。

public virtual Microsoft.EntityFrameworkCore.Query.EntityProjectionExpression MakeNullable ();

abstract member MakeNullable : unit -> Microsoft.EntityFrameworkCore.Query.EntityProjectionExpression
override this.MakeNullable : unit -> Microsoft.EntityFrameworkCore.Query.EntityProjectionExpression

Public Overridable Function MakeNullable () As EntityProjectionExpression

返回

EntityProjectionExpression

可以投影可为 null 实体的新实体投影表达式。