EntityTypeBuilder.HasMany Method

Definition

Namespace:

Microsoft.EntityFrameworkCore.Metadata.Builders

Assembly:

Microsoft.EntityFrameworkCore.dll

Package:

Microsoft.EntityFrameworkCore v8.0.0

Overloads

HasMany(String)	Configures a relationship where this entity type has a collection that contains instances of the other type in the relationship.
HasMany(String, String)	Configures a relationship where this entity type has a collection that contains instances of the other type in the relationship.
HasMany(Type, String)	Configures a relationship where this entity type has a collection that contains instances of the other type in the relationship.

HasMany(String)

Configures a relationship where this entity type has a collection that contains instances of the other type in the relationship.

[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Use the generic overload instead")]
public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder HasMany (string navigationName);

[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Use the generic overload instead")>]
abstract member HasMany : string -> Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder
override this.HasMany : string -> Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder

Public Overridable Function HasMany (navigationName As String) As CollectionNavigationBuilder

Parameters

navigationName

String

The name of the collection navigation property on this entity type that represents the relationship. The navigation must be a CLR property on the entity type.

Returns

CollectionNavigationBuilder

An object that can be used to configure the relationship.

Attributes

RequiresUnreferencedCodeAttribute

Remarks

After calling this method, you should chain a call to WithOne(String) to fully configure the relationship. Calling just this method without the chained call will not produce a valid relationship.

HasMany(String, String)

Configures a relationship where this entity type has a collection that contains instances of the other type in the relationship.

public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder HasMany (string relatedTypeName, string? navigationName);

abstract member HasMany : string * string -> Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder
override this.HasMany : string * string -> Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder

Public Overridable Function HasMany (relatedTypeName As String, navigationName As String) As CollectionNavigationBuilder

Parameters

relatedTypeName

String

The name of the entity type that this relationship targets.

navigationName

String

The name of the collection navigation property on this entity type that represents the relationship. If no property is specified, the relationship will be configured without a navigation property on this end.

Returns

CollectionNavigationBuilder

An object that can be used to configure the relationship.

Remarks

After calling this method, you should chain a call to WithOne(String) to fully configure the relationship. Calling just this method without the chained call will not produce a valid relationship.

HasMany(Type, String)

Configures a relationship where this entity type has a collection that contains instances of the other type in the relationship.

public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder HasMany (Type relatedType, string? navigationName = default);

abstract member HasMany : Type * string -> Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder
override this.HasMany : Type * string -> Microsoft.EntityFrameworkCore.Metadata.Builders.CollectionNavigationBuilder

Public Overridable Function HasMany (relatedType As Type, Optional navigationName As String = Nothing) As CollectionNavigationBuilder

Parameters

relatedType

Type

The entity type that this relationship targets.

navigationName

String

The name of the collection navigation property on this entity type that represents the relationship. If no property is specified, the relationship will be configured without a navigation property on this end.

Returns

CollectionNavigationBuilder

An object that can be used to configure the relationship.

Remarks

Note that calling this method with no parameters will explicitly configure this side of the relationship to use no navigation property, even if such a property exists on the entity type. If the navigation property is to be used, then it must be specified.

After calling this method, you should chain a call to WithOne(String) to fully configure the relationship. Calling just this method without the chained call will not produce a valid relationship.