Entity Framework 5 – DbContext Has Changes?

For EF 5 use DbContext‘s ChangeTracker:

 public bool HasUnsavedChanges()
 {
    return this.ChangeTracker.Entries().Any(e => e.State == EntityState.Added
                                              || e.State == EntityState.Modified
                                              || e.State == EntityState.Deleted);
 }

For EF 6 use the ChangeTracker.HasChanges() method which will also detect changes in many to many relationships:

 public bool HasUnsavedChanges()
 {
    return this.ChangeTracker.HasChanges();
 }