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DbSetMigrationsExtensions.AddOrUpdate<TEntity> Method (IDbSet<TEntity>, Expression<Func<TEntity, Object>>, TEntity[])

[This page is specific to the Entity Framework version 6. The latest version is available as the 'Entity Framework' NuGet package. For more information about Entity Framework, see msdn.com/data/ef.]

Adds or updates entities by a custom identification expression when SaveChanges is called. Equivalent to an "upsert" operation from database terminology. This method can useful when seeding data using Migrations.

Namespace:  System.Data.Entity.Migrations
Assembly:  EntityFramework (in EntityFramework.dll)

Syntax

'Declaration
<SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")> _
<ExtensionAttribute> _
Public Shared Sub AddOrUpdate(Of TEntity As Class) ( _
    set As IDbSet(Of TEntity), _
    identifierExpression As Expression(Of Func(Of TEntity, Object)), _
    ParamArray entities As TEntity() _
)
'Usage
Dim set As IDbSet(Of TEntity)
Dim identifierExpression As Expression(Of Func(Of TEntity, Object))
Dim entities As TEntity()

set.AddOrUpdate(identifierExpression, _
    entities)
[SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")]
public static void AddOrUpdate<TEntity>(
    this IDbSet<TEntity> set,
    Expression<Func<TEntity, Object>> identifierExpression,
    params TEntity[] entities
)
where TEntity : class
[SuppressMessageAttribute(L"Microsoft.Design", L"CA1006:DoNotNestGenericTypesInMemberSignatures")]
[ExtensionAttribute]
public:
generic<typename TEntity>
where TEntity : ref class 
static void AddOrUpdate(
    IDbSet<TEntity>^ set, 
    Expression<Func<TEntity, Object^>^>^ identifierExpression, 
    ... array<TEntity>^ entities
)
[<SuppressMessageAttribute("Microsoft.Design", "CA1006:DoNotNestGenericTypesInMemberSignatures")>]
static member AddOrUpdate : 
        set:IDbSet<'TEntity> * 
        identifierExpression:Expression<Func<'TEntity, Object>> * 
        entities:'TEntity[] -> unit   when 'TEntity : not struct
JScript does not support generic types and methods.

Type Parameters

  • TEntity
    The type of entities to add or update.

Parameters

  • entities
    Type: TEntity[]
    The entities to add or update.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IDbSet<TEntity>. When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=vs.113) or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.113).

Remarks

When the set parameter is a custom or fake IDbSet implementation, this method will attempt to locate and invoke a public, instance method with the same signature as this extension method.

See Also

Reference

DbSetMigrationsExtensions Class

AddOrUpdate Overload

System.Data.Entity.Migrations Namespace