传递到字典中的模型项的类型为“ ViewModels.SiteModel”， [英] The model item passed into the dictionary is of type 'ViewModels.SiteModel',

问题描述

我是MVC架构的新手。当我尝试更新时，它显示错误，这很奇怪，但是数据正在更新。

I'm newbie to MVC architecture.When I'm trying to update, its showing error ,Its totally strange but the data is updating.

传递到字典中的模型项的类型为 CMS.Domain.Models.Site，但是此字典需要模型项的类型为 CMS.Web.ViewModels.SiteModel。。

描述：当前Web请求执行期间发生未处理的异常。请查看堆栈跟踪，以获取有关错误及其在代码中起源的详细信息。

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

异常详细信息：System.InvalidOperationException：传入字典的模型项为类型为 CMS.Web.ViewModels.SiteModel，但此字典需要类型为 System.Collections.Generic.IEnumerable`1 [CMS.Web.ViewModels.SiteModel]的模型项。

Exception Details: System.InvalidOperationException: The model item passed into the dictionary is of type 'CMS.Web.ViewModels.SiteModel', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[CMS.Web.ViewModels.SiteModel]'.

我的代码如下：

ViewModels：

ViewModels:

namespace CMS.Web.ViewModels
{
    public class SiteModel
    {

        public SiteModel()
        {
            SiteStatus = new List<SelectListItem>();
        }

        [Key]
        public int ID { get; set; }

        [Required(ErrorMessage = "Site Name is required")]
        [Display(Name = "Site Name")]
        public string Title { get; set; }


        [Display(Name = "Require Login")]
        public bool RequiresLogin { get; set; }

        [Display(Name = "Force HTTPS")]
        public bool ForceHTTPS { get; set; }

        [Display(Name = "Enable Approval")]
        public bool Approval { get; set; }

        [AllowHtml]
        public IList<SelectListItem> SiteStatus { get; set; }

        public bool Deleted { get; set; }

        public string CreatedBy { get; set; }

        public DateTime CreatedOn
        {
            get { return _createdOn; }
            set { _createdOn = value; }
        }
        private DateTime _createdOn = DateTime.Now;

        public string LastUpdatedBy { get; set; }

        public DateTime LastUpdatedOn  
        {
            get { return _lastUpdatedOn; }
            set { _lastUpdatedOn = value; }
        }
        private DateTime _lastUpdatedOn = DateTime.Now;

        [Display(Name = "Site State")]
        public string SiteState { get; set; }

    }
}

型号：

namespace CMS.Domain.Models
{
    public partial class Site : Model
    {

        public string Title { get; set; }
        public bool Approval { get; set; }
        public bool RequiresLogin { get; set; }
        public bool ForceHTTPS { get; set; }
        public virtual string SiteStatus { get; set; }
        public bool Deleted { get; set; }

    }
}

控制器：

 public ActionResult Index()
        {
            var _sites = _siterepository.FindAll();
            return View(_sites);
        }

        public ActionResult Add()
        {
            var model = new SiteModel();
            var _SiteStatus = _siterepository.GetSiteStatus();
            foreach (var _sitestatus in _SiteStatus)
            {
                model.SiteStatus.Add(new SelectListItem()
                { 
                    Text = _sitestatus.StatusName, 
                    Value = _sitestatus.StatusName.ToString()
                });

            }
            return View(model);
        }

        [HttpPost]
        public ActionResult Add(SiteModel _sitemodel)
        {
            var model = _sitemodel.ToEntity();
            _siterepository.Add(model);
            return View(model);
        }

        public ActionResult Edit(int id)
        {
            var model = new SiteModel();
            var Site = _siterepository.Find(id);
            model = Site.ToModel();
            var _SiteStatus = _siterepository.GetSiteStatus();

            foreach (var _sitestatus in _SiteStatus)
            {
                model.SiteStatus.Add(new SelectListItem()
                {
                    Text = _sitestatus.StatusName,
                    Value = _sitestatus.StatusName.ToString(),
                    Selected = _sitestatus.StatusName == Site.SiteStatus
                });

            }

            return View(model);
        }

        [HttpPost]
        public ActionResult Edit(SiteModel _sitemodel)
        {
            var model = _sitemodel.ToEntity();
            _siterepository.Update(model);
            return View(model);
        }

我正在努力解决此问题，请提供帮助。

I'm struggling to resolve this , please help.

推荐答案

检查View的模型声明。它需要一个可枚举的列表（ IEnumerable< CMS.Web.ViewModels.SiteModel> ），但是您将其传递给 CMS.Web的单个实例。 .ViewModels.SiteModel

Check your View's model declaration. It is expecting an enumerable list (IEnumerable<CMS.Web.ViewModels.SiteModel>), but you are passing it a single instance of CMS.Web.ViewModels.SiteModel

这篇关于传递到字典中的模型项的类型为“ ViewModels.SiteModel”，的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！