MigrationBuilder.AddForeignKey 方法

定義

命名空間:

Microsoft.EntityFrameworkCore.Migrations

組件:

Microsoft.EntityFrameworkCore.Relational.dll

套件:

Microsoft.EntityFrameworkCore.Relational v9.0.0

多載

AddForeignKey(String, String, String, String, String, String, String, ReferentialAction, ReferentialAction)	建置 ， AddForeignKeyOperation 將新的外鍵新增至資料表。
AddForeignKey(String, String, String[], String, String, String, String[], ReferentialAction, ReferentialAction)	建置 ， AddForeignKeyOperation 將新的複合 (多資料行) 外鍵新增至資料表。

AddForeignKey(String, String, String, String, String, String, String, ReferentialAction, ReferentialAction)

來源:

MigrationBuilder.cs

建置 ， AddForeignKeyOperation 將新的外鍵新增至資料表。

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation> AddForeignKey (string name, string table, string column, string principalTable, string? schema = default, string? principalSchema = default, string? principalColumn = default, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onUpdate = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onDelete = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction);

abstract member AddForeignKey : string * string * string * string * string * string * string * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation>
override this.AddForeignKey : string * string * string * string * 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 AddForeignKey (name As String, table As String, column As String, principalTable As String, Optional schema As String = Nothing, Optional principalSchema As String = Nothing, Optional principalColumn 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)

參數

name

String

外鍵條件約束名稱。

table

String

包含外鍵的資料表。

column

String

受限制的資料行。

principalTable

String

外鍵受限的資料表。

schema

String

包含資料表的架構，如果 null 應該使用預設架構，則為 。

principalSchema

String

包含主體資料表的架構，如果 null 應該使用預設架構，則為 。

principalColumn

String

外鍵資料行受限制的資料行，或 null 限制為主鍵資料行。

onUpdate

ReferentialAction

要對更新採取的動作。

onDelete

ReferentialAction

要對刪除採取的動作。

傳回

OperationBuilder<AddForeignKeyOperation>

建置器，允許將批註新增至作業。

備註

如需詳細資訊和範例 ，請參閱資料庫移 轉。

AddForeignKey(String, String, String[], String, String, String, String[], ReferentialAction, ReferentialAction)

來源:

MigrationBuilder.cs

建置 ， AddForeignKeyOperation 將新的複合 (多資料行) 外鍵新增至資料表。

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation> AddForeignKey (string name, string table, string[] columns, string principalTable, string? schema = default, string? principalSchema = default, string[]? principalColumns = default, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onUpdate = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction, Microsoft.EntityFrameworkCore.Migrations.ReferentialAction onDelete = Microsoft.EntityFrameworkCore.Migrations.ReferentialAction.NoAction);

abstract member AddForeignKey : string * string * string[] * string * string * string * string[] * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction * Microsoft.EntityFrameworkCore.Migrations.ReferentialAction -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddForeignKeyOperation>
override this.AddForeignKey : string * string * string[] * string * 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 AddForeignKey (name As String, table As String, columns As String(), principalTable As String, Optional schema As String = Nothing, Optional principalSchema As String = Nothing, Optional principalColumns 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)

參數

name

String

外鍵條件約束名稱。

table

String

包含外鍵的資料表。

columns

String[]

受限制之資料行的已排序清單。

principalTable

String

外鍵受限的資料表。

schema

String

包含資料表的架構，如果 null 應該使用預設架構，則為 。

principalSchema

String

包含主體資料表的架構，如果 null 應該使用預設架構，則為 。

principalColumns

String[]

外鍵資料行受限制的資料行，或 null 限制為主鍵資料行。

onUpdate

ReferentialAction

要對更新採取的動作。

onDelete

ReferentialAction

要對刪除採取的動作。

傳回

OperationBuilder<AddForeignKeyOperation>

建置器，允許將批註新增至作業。

備註

如需詳細資訊和範例 ，請參閱資料庫移 轉。