CreateTableBuilder<TColumns>.ForeignKey Metodo

Definizione

Spazio dei nomi:

Microsoft.EntityFrameworkCore.Migrations.Operations.Builders

Assembly:

Microsoft.EntityFrameworkCore.Relational.dll

Pacchetto:

Microsoft.EntityFrameworkCore.Relational v9.0.0

Overload

ForeignKey(String, Expression<Func<TColumns,Object>>, String, String, String, ReferentialAction, ReferentialAction)	Configura una chiave esterna a colonna singola nella tabella.
ForeignKey(String, Expression<Func<TColumns,Object>>, String, String[], String, ReferentialAction, ReferentialAction)	Configura una chiave esterna a più colonne (composite) nella tabella.

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

Origine:

CreateTableBuilder.cs

Configura una chiave esterna a colonna singola nella tabella.

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)

Parametri

name

String

Nome del vincolo di chiave esterna.

column

Expression<Func<TColumns,Object>>

Colonna utilizzata per la chiave esterna.

principalTable

String

Tabella a cui è vincolata la chiave esterna.

principalColumn

String

Colonna a cui è vincolata la colonna chiave esterna.

principalSchema

String

Schema contenente la tabella a cui è vincolata la chiave esterna.

onUpdate

ReferentialAction

Oggetto ReferentialAction da utilizzare per gli aggiornamenti.

onDelete

ReferentialAction

Oggetto ReferentialAction da utilizzare per le eliminazioni.

Restituisce

OperationBuilder<AddForeignKeyOperation>

Lo stesso generatore in modo che più chiamate possano essere concatenati.

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

Origine:

CreateTableBuilder.cs

Configura una chiave esterna a più colonne (composite) nella tabella.

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)

Parametri

name

String

Nome del vincolo di chiave esterna.

columns

Expression<Func<TColumns,Object>>

Colonne utilizzate per la chiave esterna.

principalTable

String

Tabella a cui è vincolata la chiave esterna.

principalColumns

String[]

Colonne a cui è vincolata la colonna chiave esterna.

principalSchema

String

Schema contenente la tabella a cui è vincolata la chiave esterna.

onUpdate

ReferentialAction

Oggetto ReferentialAction da utilizzare per gli aggiornamenti.

onDelete

ReferentialAction

Oggetto ReferentialAction da utilizzare per le eliminazioni.

Restituisce

OperationBuilder<AddForeignKeyOperation>

Lo stesso generatore in modo che più chiamate possano essere concatenati.