Global setting for AsNoTracking()?

Question

Originally I believed that

context.Configuration.AutoDetectChangesEnabled = false; 

would disable change tracking. But no. Currently I need to use AsNoTracking() on all my LINQ queries (for my read only layer). Is there a global setting to disable tracking on the DbContext?

Answer 1

Since this question is not tagged with a specific EF version, I wanted to mention that in EF Core the behavior can be configured at the context level.

You can also change the default tracking behavior at the context instance level:

using (var context = new BloggingContext()) {     context.ChangeTracker.QueryTrackingBehavior = QueryTrackingBehavior.NoTracking;      var blogs = context.Blogs.ToList(); } 

Answer 2

What about simply exposing method like this on your derived context and use it for queries:

public IQueryable<T> GetQuery<T>() where T : class {     return this.Set<T>().AsNoTracking(); } 

Setting AsNoTracking globally is not possible. You must set it per each query or per each ObjectSet (not DbSet). The latter approach requires using ObjectContext API.

var objectContext = ((IObjectContextAdapter)dbContext).ObjectContext; var set = objectContext.CreateObjectSet<T>(); set.MergeOption = MergeOption.NoTracking; // And use set for queries