CreateTableBuilder<TColumns>.UniqueConstraint Método

Definição

Namespace:

Microsoft.EntityFrameworkCore.Migrations.Operations.Builders

Assembly:

Microsoft.EntityFrameworkCore.Relational.dll

Pacote:

Microsoft.EntityFrameworkCore.Relational v8.0.0

Configura uma restrição exclusiva na tabela.

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation> UniqueConstraint (string name, System.Linq.Expressions.Expression<Func<TColumns,object>> columns);

abstract member UniqueConstraint : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>
override this.UniqueConstraint : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>

Public Overridable Function UniqueConstraint (name As String, columns As Expression(Of Func(Of TColumns, Object))) As OperationBuilder(Of AddUniqueConstraintOperation)

Parâmetros

name

String

O nome da restrição.

columns

Expression<Func<TColumns,Object>>

As colunas que compõem a restrição.

Retornos

OperationBuilder<AddUniqueConstraintOperation>

O mesmo construtor para que várias chamadas possam ser encadeadas.