public JsonResult Index(string oldp, string newp)
        {
            OperationResult r = new OperationResult();

            SysUserDto u = SysUser.GetById(UserHelper.GetSigninUser.userId);

            if (u.Password.Equals(Zhongyu.Common.EncryptHelper.MD5Encrypt(oldp, 32)))
            {
                SysUser.ChangePassword(UserHelper.GetSigninUser.userId, Zhongyu.Common.EncryptHelper.MD5Encrypt(newp, 32));
                r.ResultType = OperationResultType.Success;
            }
            else
            {
                r.Message    = "原始密码不正确。";
                r.ResultType = OperationResultType.ValidError;
            }
            return(Json(r));
        }