没有为此对象定义的无参数构造函数。 ASP.net MVC4，带有NHibernate

Question

这段代码在我同事的机器上运行正常，但是当我在我的机器上运行此代码时，它给出了“错误没有为此对象定义的无参数构造函数”。如果我添加无参数构造函数它适用于我，但你在下面的代码public ActionResult User_Read([DataSourceRequest] DataSourceRequest request)中看到，然后它们给我错误“对象引用没有设置为对象的实例。”在这个街区。

return Json(repository.All()
   .Select(s => new UserViewModel()
   {
        Id = s.Id,
        UserName = s.UserName,
        Email = s.Email,
        RoleId = s.Role,
        Locked = s.Locked,
        CreatedAt = s.CreatedAt,
        UpdatedAt = s.UpdatedAt
    }).ToDataSourceResult(request));



using Kendo.Mvc.UI;
using MHUSA.Pricing.Core.Domain;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web.Mvc;
using Kendo.Mvc.Extensions;
using MHUSAPricingRI.WebUI.Models;
using MHUSA.Pricing.Core;

namespace MHUSAPricingRI.WebUI.Controllers
{
    public class UserController : Controller
    {
        private readonly IUserRepository repository;

        //public UserController() { }

        public UserController(IUserRepository userRepository)
        {
            this.repository = userRepository;
        }

        public ActionResult Index()
        {
            PopulateRoles();
            return View();
        }

        public ActionResult User_Read([DataSourceRequest] DataSourceRequest request)
        {
            return Json(repository.All()
                .Select(s => new UserViewModel()
                {
                    Id = s.Id,
                    UserName = s.UserName,
                    Email = s.Email,
                        RoleId = s.Role,
                    Locked = s.Locked,
                    CreatedAt = s.CreatedAt,
                    UpdatedAt = s.UpdatedAt
                })
                .ToDataSourceResult(request));
        }

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult User_Create([DataSourceRequest] DataSourceRequest request,     [Bind(Exclude = "Id")] UserViewModel user)
        {
            if (user != null && ModelState.IsValid)
            {
                User target = repository.FindOne(u => u.UserName == user.UserName);

                if (target == null)
                {
                    target = new User(user.UserName, "password", user.Email, (Role)     user.RoleId);

                    if (user.Locked)
                    {
                        target.Lock();
                    }

                    repository.Save(target);
                }
            }

            return Json(new[] { user }.ToDataSourceResult(request, ModelState));
        }

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult User_Update([DataSourceRequest] DataSourceRequest request,     UserViewModel user)
        {
            if (user != null && ModelState.IsValid)
            {
                User target = repository.FindOne(u => u.Id == user.Id);

                if (target != null)
                {
                    //target.Password = user.Password;
                    target.Email = user.Email;
                    target.Role = user.RoleId;
                    target.UpdatedAt = DateTime.UtcNow;

                    if (user.Locked)
                    {
                        target.Lock();
                    }
                    else
                    {
                        target.Unlock();
                    }

                    repository.Save(target);
                }
            }

            return Json(new[] { user }.ToDataSourceResult(request, ModelState));
        }

        [AcceptVerbs(HttpVerbs.Post)]
        public ActionResult User_Destroy([DataSourceRequest] DataSourceRequest request, UserViewModel user)
        {
            if (user != null)
            {
                User target = repository.FindOne(u => u.Id == user.Id);
                repository.Remove(target);
            }

            return Json(ModelState.ToDataSourceResult());
        }

        private void PopulateRoles()
        {
            List<UserRoleViewModel> userRoleList = new List<UserRoleViewModel>();
            string[] roles = Enum.GetNames(typeof(Role));

            for (int i = 0; i < roles.Length; i++)
            {
                userRoleList.Add(new UserRoleViewModel
                {
                    RoleId = i,
                    RoleName = roles[i]
                });
            }

            ViewData["roles"] = userRoleList.ToList();
        }
    }
}