public class DbBase : Commons.Data.DbContextRepositoryBase
    {

        public DbBase()
            : base(Commons.Data.DbFactory.Intance(System.Configuration.ConfigurationManager.ConnectionStrings["testEntities1"].ToString(), 2, 0))
        {

        }
    }

    public class DbBase2 : Commons.Data.DbContextRepositoryBase
    {

        public DbBase2()
            : base(Commons.Data.DbFactory.Intance(System.Configuration.ConfigurationManager.ConnectionStrings["testEntities2"].ToString(), 2, 1))
        {

        }
    }

public class ReviewRepository : DbBase
    {

    }
    public class TestRepository : DbBase
    {
        public void Insert()
        {
            var product = new Product
            {
                Info = "test",
                Name = "test",
            };

            var product_Comment = new Product_Comment
            {
                CommentInfo = "test",
                CommentTitle = "Test",
                ProductID = 1,
                UserID = 1
            };
            var review = new Review
            {
                CreateDate = DateTime.Now,
                Info = "test",
                ObjID = 1,
                ObjType = 1,
                Status = 100,
                UserID = 1,
            };
            using (var trans = new TransactionScope())
            {
                //var testEntities = new testEntities();
                // var testEntities2 = new testEntities();
                #region  一個dbcontext對象不發生ＭＳＤＴＣ
                //testEntities.Product.AddObject(product);
                //testEntities.Review.AddObject(review);
                //testEntities.SaveChanges();
                #endregion

                #region  多個dbcontext對象也不發生ＭＳＤＴＣ
                //testEntities.Product.Add(product);
                //testEntities.SaveChanges();
                //testEntities2.Review.Add(review);
                //testEntities2.SaveChanges();
                #endregion

                #region 自己生產的DbContext對象也沒有發生ＭSDTC
                //    base.Insert<Product>(product);
                base.Insert<Product_Comment>(product_Comment);
                new ReviewRepository().Insert<Review>(review);
                #endregion
                trans.Complete();
            }
        }
    }