MVC 上下文类

 public PerContext()            : base("Name=Default")        {            Database.SetInitializer<PerContext>(null);        }        protected override void OnModelCreating(DbModelBuilder modelBuilder)        {            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();            modelBuilder.Conventions.Remove<IncludeMetadataConvention>();            modelBuilder.Conventions.Remove<DecimalPropertyConvention>();            modelBuilder.Conventions.Add(new DecimalPropertyConvention(18, 6));            base.OnModelCreating(modelBuilder);        }