public static void AttachUpdated(this ObjectContext context, EntityObject detachedEntity)
{
#region EntityKey is null
if (detachedEntity.EntityKey == null)
{
//String entitySetName = GetEntitySetFullName(context, detachedEntity);
//int objectId = (int)detachedEntity.GetType().GetProperty("Id").GetValue(detachedEntity, null);
////detachedEntity.EntityKey = new System.Data.EntityKey(entitySetName, "Id", objectId);
//detachedEntity.EntityKey = new EntityKey(context.GetEntitySetName(detachedEntity.GetType()));
//// create a new primary key
//Guid newPk = Guid.NewGuid();
//// create new entity key
//EntityKey entityKey = new EntityKey(context.GetType().Name + "." + detachedEntity.ToString(), pkName, newPk);
//// get type name of new entity
//String typeName = oc.GetType().Namespace + "." + entityKey.EntitySetName;
//// create a new entity
}
#endregion
if (detachedEntity.EntityState == EntityState.Detached)
{
object currentEntity = null;
if (context.TryGetObjectByKey(detachedEntity.EntityKey, out currentEntity))
{
context.ApplyCurrentValues(detachedEntity.EntityKey.EntitySetName, detachedEntity);
var newEntity = detachedEntity as IEntityWithRelationships;
var oldEntity = currentEntity as IEntityWithRelationships;
if (newEntity != null && oldEntity != null)
{
context.ApplyReferencePropertyChanges(newEntity, oldEntity);
}
}
else
{
throw new ObjectNotFoundException();
}
}
}
public static void AttachUpdated(this ObjectContext context, EntityObject objectDetached)
{
//if (objectDetached.EntityState == EntityState.Detached)
if (objectDetached.EntityState == EntityState.Detached || objectDetached.EntityState == EntityState.Modified)//modified by chenyh
{
object currentEntityInDb = null;
if (context.TryGetObjectByKey(objectDetached.EntityKey, out currentEntityInDb))
{
context.ApplyPropertyChanges(objectDetached.EntityKey.EntitySetName, objectDetached);
//Apply property changes to all referenced entities in context
context.ApplyReferencePropertyChanges((IEntityWithRelationships)objectDetached,
(IEntityWithRelationships)currentEntityInDb);
}
else
{
throw new ObjectNotFoundException();
}
}
}
public static void AttachUpdated(this ObjectContext context, EntityObject detachedEntity)
{
if (detachedEntity.EntityState == EntityState.Detached)
{
object currentEntity;
if (context.TryGetObjectByKey(detachedEntity.EntityKey, out currentEntity))
{
context.ApplyPropertyChanges(detachedEntity.EntityKey.EntitySetName, detachedEntity);
var newEntity = detachedEntity as IEntityWithRelationships;
var oldEntity = currentEntity as IEntityWithRelationships;
if (newEntity != null && oldEntity != null)
{
context.ApplyReferencePropertyChanges(newEntity, oldEntity);
}
}
else
{
throw new ObjectNotFoundException();
}
}
}