共用方式為


ColumnExpression.MakeNullable 方法

定義

讓此資料行成為可為 Null。

public Microsoft.EntityFrameworkCore.Query.SqlExpressions.ColumnExpression MakeNullable ();
public abstract Microsoft.EntityFrameworkCore.Query.SqlExpressions.ColumnExpression MakeNullable ();
member this.MakeNullable : unit -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ColumnExpression
abstract member MakeNullable : unit -> Microsoft.EntityFrameworkCore.Query.SqlExpressions.ColumnExpression
Public Function MakeNullable () As ColumnExpression
Public MustOverride Function MakeNullable () As ColumnExpression

傳回

新的運算式,其 IsNullable 屬性設定為 true。

適用於