随机数重置密码

  ///重置用户密码
            $('[func=btnResetPassword]').click(function () {
                var cks = $('input[type=checkbox][name=id]:checked');
                var ids = "";
                if (cks.length > 0) {

                    cks.each(function (index, cur) {
                        if (ids !== "") {
                            ids += ",";
                        }
                        ids += $(cur).val();
                    });
                }
                else {
                    iDialog.alert("请选择一条记录");
                    return;
                }
                var ele = $(this);
                iDialog.confirm({ message: '确认要重置选中的这些用户密码？' }).on(function (flag) {
                    if (flag) {
                        richAjax({ userId: ids }, '@Url.Action("_UpdateUserPassword", "Merchant")', true, true, true).Do(ele, function (data) {
                            if (data.Message) {
                                iDialog.alert({ message: data.Message }).on(function (ok) {
                                    if (ok) {
                                        if (!data.IsError) {
                                            window.location.href = '@Url.Action("MerchantUsersIndex", "Merchant", new { area= "Merchant" })';
                                        }
                                    }
                                })
                            }
                        })
                        @*richAjax({ userId: ids }, '@Url.Action("_UpdateUserPassword", "Merchant")', true, true, true).Do(ele, "@Url.Action("MerchantUsersIndex", "Merchant")");*@
                    }
                });

 <div class="btn-group">
                                <a href="javascript:;" class="btn btn-default btn-sm" func="btnResetPassword"><i class="fa fa-repeat"></i>&nbsp;重置密码</a>
                            </div>

  /// <summary>
        /// 重置密码
        /// </summary>
        /// <returns></returns>
        public JsonResult _UpdateUserPassword(int userId)
        {
            if (userId <= 0) return Json(AjaxResult.Error("缺少商户标识"));

            const string randomChars = "0123456789";//ABCDEFGHIJKLMNOPQRSTUVWXYZ

            var password = string.Empty;
            var random = new Random();
            for (var i = 0; i < 6; i++)
            {
                password += randomChars[random.Next(randomChars.Length)];
            }

            var dto = MerchantService.Value.ChangeMerchantPassword(userId, password);

            return Json(dto.CheckSuccess() ? AjaxResult.Success("密码重置成功：" + password) : AjaxResult.Error(dto.Message));
        }

   /// <summary>
        /// 修改商户密码
        /// </summary>
        /// <param name="userId"></param>
        /// <param name="newPassword"></param>
        /// <returns></returns>
        public AnyDTO ChangeMerchantPassword(int userId, string newPassword)
        {
            var user = base.MerchantUsersAccess.Value.GetById(userId);

            //var user = this.GetMerchantById(userId);
            if (user == null) return AnyDTO.Error("商户不存在");

            user.Password = newPassword.ToMD5();
            user.UpdateTime = DateTime.Now;
            MerchantUsersAccess.Value.Save(user);

            return AnyDTO.Success("密码修改成功");
        }