In Entity Framework terms, because it has no identity and is part of an entity, it's an Entity Framework complex type, and we've actually had support for complex types since the first version of Entity Framework. The Person type isn't nested as shown in the following code.public...
如需詳細資訊,請參閱物件查詢 (Entity Framework)。 下列範例會傳回包含巢狀 SalesOrderHeader 實體類型的 DbDataRecord 物件集合。 VB 複製 ' Define a query that returns a nested ' DbDataRecord for the projection. Dim query As ObjectQuery(Of DbDataRecord) = context.Contacts.Select("it.FirstName,...
When you construct EntityCommand objects, you can specify a stored procedure name or a query text. The Entity Framework works with storage-specific data providers to translate generic Entity SQL into storage-specific queries. For more information about writing Entity SQL queries, see Entity SQL ...
17. Using EntityObjects in WCF Services 449 17.在WCF服务中使用实体对象 Planning for an Entity Framework–Agnostic Client 450 为未知的客户端规划EF Assessing the Pros and Cons of an Entity Framework–Agnostic Consumer 451 为未知用户综合评估EF Building a Simple WCF Service with EntityObjects 452 使...
These methods execute much faster than adding or removing a single object at a time because, by default, Entity Framework calls DetectChanges in each Add and Remove method. With the Range methods, you can handle multiple objects while DetectChanges is called only once, improving performance dramatic...
When you construct EntityCommand objects, you can specify a stored procedure name or a query text. The Entity Framework works with storage-specific data providers to translate generic Entity SQL into storage-specific queries. For more information about writing Entity SQL queries, see Entit...
Value objects Not started Cosmos database provider Not started Public model conventions Not started Zero bug balance In-progress .NET integration Enhancements to System.Data In-progress Enhancements to Microsoft.Data.Sqlite In-progress Nullable reference types Done Experiments and investigations SqlServer.Co...
EF Core 6.0 Release Candidate 1 was released to NuGet a few weeks ago. This release is the first of two “go live” release candidates that are supported in production. EF Core 6.0 RC1 runs on Release Candidate 1 for .NET 6.0, which also has a “go live” license. ...
EntityFrameworkCore extensions (performance improvement - into overdrive): -Bulk operations (super fast): Insert, Update, Delete, Read, Upsert, Sync, SaveChanges. -Batch ops: Update, Delete - Deprecated from EF8 since EF7+ has native Execute-Up/Del. -AddOp (additional): Truncate. Library ...
You’ll then pass these objects into the pseudo-server-side operations that will use a new context, with no previous knowledge of the entity instances, to persist the changes to the database. Entity Framework has a list of states that the change tracker uses to record the status of each ...