代码：

public void UpdateThemeInfo(int id)        {            //事务            using (TransactionScope ctran = new TransactionScope())            {                try                {                    Models.ThemeInfo model = Models.ThemeInfo.Find(id);                    if (model != null)                    {                        model.CreatDate = DateTime.Now;                        model.Subject = "修改测试" + id;                        model.Text = "修改测试内容" + id;                    }                    model.Update();                    ctran.VoteCommit();                }                catch (Exception)                {                    ctran.VoteRollBack();                }            }        }