public async Task <ResponseModel> UpdateAdmin(UpdataAdmin admin)
        {
            var result = await _context.Admins.FirstOrDefaultAsync();

            result.Password = admin.Password;
            result.NickName = admin.NickName;
            result.Email    = admin.Email;
            var i = await _context.SaveChangesAsync();

            if (i > 0)
            {
                return new ResponseModel()
                       {
                           code = 200, result = "Admin信息修改成功", data = ""
                       }
            }
            ;
            else
            {
                return new ResponseModel()
                       {
                           code = 0, result = "Admin信息修改失败", data = ""
                       }
            };
        }
        public async Task <IActionResult> Admin(UpdataAdmin admin)
        {
            var result = await _AdminService.UpdateAdmin(admin);

            return(Json(result));
        }