CreateTableBuilder<TColumns>.ForeignKey Metoda

Definicja

Przestrzeń nazw:

Microsoft.EntityFrameworkCore.Migrations.Operations.Builders

Zestaw:

Microsoft.EntityFrameworkCore.Relational.dll

Pakiet:

Microsoft.EntityFrameworkCore.Relational v9.0.0

Przeciążenia

ForeignKey(String, Expression<Func<TColumns,Object>>, String, String, String, ReferentialAction, ReferentialAction)	Konfiguruje klucz obcy z jedną kolumną w tabeli.
ForeignKey(String, Expression<Func<TColumns,Object>>, String, String[], String, ReferentialAction, ReferentialAction)	Konfiguruje wielokolumny (złożony) klucz obcy w tabeli.

ForeignKey(String, Expression<Func<TColumns,Object>>, String, String, String, ReferentialAction, ReferentialAction)

Źródło:

CreateTableBuilder.cs

Konfiguruje klucz obcy z jedną kolumną w tabeli.

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation> ForeignKey (string name, System.Linq.Expressions.Expression<Func<TColumns,object>> column, string principalTable, string? principalColumn = default, string? principalSchema = default, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onUpdate = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onDelete = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction);

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

Public Overridable Function ForeignKey (name As String, column As Expression(Of Func(Of TColumns, Object)), principalTable As String, Optional principalColumn As String = Nothing, Optional principalSchema As String = Nothing, Optional onUpdate As ReferentialAction = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction, Optional onDelete As ReferentialAction = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction) As OperationBuilder(Of AddForeignKeyOperation)

Parametry

name

String

Nazwa ograniczenia klucza obcego.

column

Expression<Func<TColumns,Object>>

Kolumna używana dla klucza obcego.

principalTable

String

Tabela, do której jest ograniczony klucz obcy.

principalColumn

String

Kolumna, do której jest ograniczona kolumna klucza obcego.

principalSchema

String

Schemat zawierający tabelę, z którą jest ograniczony klucz obcy.

onUpdate

ReferentialAction

Element ReferentialAction do użycia na potrzeby aktualizacji.

onDelete

ReferentialAction

Element ReferentialAction do użycia do usuwania.

Zwraca

OperationBuilder<AddForeignKeyOperation>

Ten sam konstruktor, aby można było połączyć wiele wywołań.

ForeignKey(String, Expression<Func<TColumns,Object>>, String, String[], String, ReferentialAction, ReferentialAction)

Źródło:

CreateTableBuilder.cs

Konfiguruje wielokolumny (złożony) klucz obcy w tabeli.

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation> ForeignKey (string name, System.Linq.Expressions.Expression<Func<TColumns,object>> columns, string principalTable, string[]? principalColumns, string? principalSchema = default, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onUpdate = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onDelete = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction);

abstract member ForeignKey : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> * string * string[] * string * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation>
override this.ForeignKey : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> * string * string[] * string * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation>

Public Overridable Function ForeignKey (name As String, columns As Expression(Of Func(Of TColumns, Object)), principalTable As String, principalColumns As String(), Optional principalSchema As String = Nothing, Optional onUpdate As ReferentialAction = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction, Optional onDelete As ReferentialAction = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction) As OperationBuilder(Of AddForeignKeyOperation)

Parametry

name

String

Nazwa ograniczenia klucza obcego.

columns

Expression<Func<TColumns,Object>>

Kolumny używane dla klucza obcego.

principalTable

String

Tabela, do której jest ograniczony klucz obcy.

principalColumns

String[]

Kolumny, dla których jest ograniczona kolumna klucza obcego.

principalSchema

String

Schemat zawierający tabelę, z którą jest ograniczony klucz obcy.

onUpdate

ReferentialAction

Element ReferentialAction do użycia na potrzeby aktualizacji.

onDelete

ReferentialAction

Element ReferentialAction do użycia do usuwania.

Zwraca

OperationBuilder<AddForeignKeyOperation>

Ten sam konstruktor, aby można było połączyć wiele wywołań.