/// <summary>
/// 用户更新用户名
/// </summary>
/// <param name="session"></param>
/// <param name="user"></param>
/// <param name="newName"></param>
/// <param name="currentAccountNo"></param>
/// <returns></returns>
public static bool UpdateName(Session session, User user, string newName, string currentAccountNo)
{
if (string.IsNullOrEmpty(newName)) throw new ArgumentNullException("newName");
if (newName.Equals(user.Name)) return true;
var account = session.Load<Account>(m => m.Name.Equals(user.Name));
if(account == null) throw new ArgumentException(string.Format("用户{0}不存在", user.Name), "user");
account.Name = newName;
user.Name = newName;
return session.Update(user) &&
session.Update(account) &&
user.Deactive(session, currentAccountNo);
}