Asnotracking in entity framework

2 Answers 2. Looking at the source code of the AsNoTracking() extension method: Since source (your DbSet you're trying to mock) is indeed a DbQuery (because DbSet is deriving from DbQuery), it tries to invoke the 'real' (non-mocked) AsNoTracking() method which rightfully returns null. Entity Framework Core Tutorial AsNoTracking Introduction. Tracking behavior controls whether to keep track or not of information about an entity instance when it is changed. If an entity is tracked, any changes detected in the entity will be persisted to the database during SaveChanges(). When we use function AsNoTracking() we are explicitly telling Entity Framework that the entities are not tracked by the context. This can be especially useful when .

Asnotracking in entity framework

2 Answers 2. Looking at the source code of the AsNoTracking() extension method: Since source (your DbSet you're trying to mock) is indeed a DbQuery (because DbSet is deriving from DbQuery), it tries to invoke the 'real' (non-mocked) AsNoTracking() method which rightfully returns null. AsNoTracking() is an extension method, which was added in Entity Framework (as ability to return non-cached results). That's why you don't have it in Entity Framework I suggest you to upgrade version of Entity Framework, if it is possible (BTW current version is ). share|improve this answer. Entity Framework and AsNoTracking. The AsNoTracking () extension method returns a new query and the returned entities will not be cached by the context (DbContext or Object Context). This means that the Entity Framework does not perform any additional processing or storage of the entities that are returned by the query. AsNoTracking(IQueryable) AsNoTracking(IQueryable) AsNoTracking(IQueryable) Returns a new query where the entities returned will not be cached in the DbContext or ObjectContext. This method works by calling the AsNoTracking method of the underlying query object. Entity Framework Core Tutorial AsNoTracking Introduction. Tracking behavior controls whether to keep track or not of information about an entity instance when it is changed. If an entity is tracked, any changes detected in the entity will be persisted to the database during SaveChanges().AsNoTracking(). This optimisation allows you to tell Entity Framework not to track the results of a query. This means that Entity Framework. AsNotracking queries seems to perform worse in EF Core than leaving the. AsNotracking property out. This was not the case in EF 6. So while. Use AsNoTracking to speed up Entity Framework performance. February 03, - 2 minute read. I'm curently busy at a large project in the insurance sector. entity-framework documentation: Using AsNoTracking. Entity Framework provide a method that remove the tracking ability of objects which will increase the performance. Of course, the drawback is.

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