¡@
c# Programming Glossary: entitykeyEntity Framework 4 How to find the primary key? http://stackoverflow.com/questions/2958921/entity-framework-4-how-to-find-the-primary-key question There is a property on each EF4 entity called EntityKey which contains an array of EntityKeyValues array is there in.. EF4 entity called EntityKey which contains an array of EntityKeyValues array is there in case of compound key . You could reference.. test drive some sample code I'll post it up here. Edit The EntityKeyValue is a KeyValuePair TKey TValue where the key is the primary..
Entity Framework 4 - AddObject vs Attach http://stackoverflow.com/questions/3920111/entity-framework-4-addobject-vs-attach The entity will get an automatically generated temporary EntityKey and its EntityState will be set to Added . When SaveChanges.. been attached when you call SaveChanges the value of the EntityKey is used to update or delete the appropriate row by finding its..
Entity Framework: Setting a Foreign Key Property http://stackoverflow.com/questions/480872/entity-framework-setting-a-foreign-key-property it like this Locker locker new Locker locker.UserReference.EntityKey new System.Data.EntityKey entities.User ID userID locker.LockerStyleReference.EntityKey.. new Locker locker.UserReference.EntityKey new System.Data.EntityKey entities.User ID userID locker.LockerStyleReference.EntityKey.. entities.User ID userID locker.LockerStyleReference.EntityKey new EntityKey entities.LockerStyle ID lockerStyleID locker.NameplateReference.EntityKey..
generic GetById for complex PK http://stackoverflow.com/questions/5794902/generic-getbyid-for-complex-pk object keyName keyValue Build entity key var entityKey new EntityKey _entitySetName keyPairs Query first current state manager and..
How to get all names of properties in an Entity? http://stackoverflow.com/questions/5851274/how-to-get-all-names-of-properties-in-an-entity .GetProperties The problem is that this code return EntityKey and EntityState as properties whe I use it with Entity Object...
How can I attach an Entity Framework object that isn't from the database? http://stackoverflow.com/questions/700192/how-can-i-attach-an-entity-framework-object-that-isnt-from-the-database this gives me the following error An object with a null EntityKey value cannot be attached to an object context. EDIT It looks.. entities.AttachTo Authors dbAuthor to attach without an EntityKey but then I have hard coded magic strings which will break if..
http://stackoverflow.com/questions/9083709/the-relationship-between-the-two-objects-cannot-be-defined-because-they-are-atta szkolenie currentUczestnik.Szkolenie.EntityKey szkolenie.EntityKey if context.SzkolenieUczestnicies.Any t.. szkolenie currentUczestnik.Szkolenie.EntityKey szkolenie.EntityKey if context.SzkolenieUczestnicies.Any t t.SzkolenieUczestnicy1.. currentUczestnik.Szkolenie szkolenie I've added it thru EntityKey on SzkolenieReference and SzkolenieID. context.Attach szkolenie..
|