我如何使用 Entity Framework(.edmx 模型)和 Razor 视图为 MVC4 或 MVC 5 创建局部视图?

How can i create a Partial View for MVC4 or MVC 5 using Entity Framework (.edmx Model) with Razor Views?

我在尝试通过 .edmx 模型在我的家庭控制器上创建局部视图时遇到了很多麻烦。

我无法更改此模型的属性,因为它是我正在构建此网站的另一个系统的一部分。

我花了很长时间试图解决这个问题,来到这里希望能得到一些帮助和建议。

目标: 使用 .edmx 模型中的模型在主页上呈现部分 _Patient.cshtml 视图。我希望你能告诉我哪里出了问题,因为它不起作用。

有什么问题?

我收到多个错误,例如:

model: : EntityType model has no key defined. Define the key for this entity type.

The model item passed into the dictionary is of type 'Models', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`

using the generic type 'system.collections.generic.ienumerable requires 1 type arguments MVC

目前我得到这个错误,但我感觉它在一长串错误列表的前面。

The model item passed into the dictionary is of type 'FaceToFaceWebsite.Models.PatientListViewModel', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[FaceToFaceWebsite.Models.PatientListViewModel]'.

下面是.edmx (因为我还不能 post 图片..

用户 (edmx) -特性- 用户身份 代码名称 使用简要说明 Device_DeviceID -导航属性- 设备 制度项目

设备 -特性- 设备ID 姓名 -导航属性- 用户

会话 -特性- 会话ID 活动用户ID ActiveDeviceID 开始于 到达终点 -导航属性- 会话练习

(Edmx 比显示的大很多,但是这些是我目前需要使用的模型。但是会话和用户实际上是通过另一个模型链接的)

HomeController.cs

using FaceToFaceWebsite.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Data.Entity;
using System.Web;
using System.Web.Mvc;
using PagedList;
using System.Web.UI;
using System.Configuration;
using System.Collections;

namespace FaceToFaceWebsite.Controllers
{
    public class HomeController : Controller
    {
        public F2FDataEntities _db = F2FDataEntities();

        [OutputCache(CacheProfile = "Long", VaryByHeader = "X-Requested-With", Location = OutputCacheLocation.Server)]
        public ActionResult Index(string searchTerm = null, int page = 1)
        //public ActionResult Index()
        {
            var model =
            _db.UserID.ToList()
            .OrderByDescending(u =>u.UserID)
            .Take(10)
            .Select (u => new PatientListViewModel
             {
                  CodeName = u.CodeName,
                  Name = u.Name
             }).ToPagedList(page, 10);

            return PartialView("_Patient", new FaceToFaceWebsite.Models.PatientListViewModel());
            ////return View(model);


            ////ViewBag.Message = "Modify this template to jump-start your ASP.NET MVC application.";
        }

        public ActionResult About()
        {
            ViewBag.Message = "Your app description page.";
            return View();
        }

        public ActionResult Patients()
        {
            ViewBag.Message = "";
            return View();
        }

        public ActionResult Help()
        {
            ViewBag.Message = "";
            return View();
        }

        public ActionResult Contact()
        {
            ViewBag.Message = "Contact Us";
            return View();
        }

        protected override void Dispose(bool disposing)
        {
            if (_db != null)
            {
                _db.Dispose();
            }
            base.Dispose(disposing);
        }
    }

}

PatientListViewModel

using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Collections;
using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
using System.Data.Entity;

namespace FaceToFaceWebsite.Models
{
    public class PatientListViewModel
    {
        public virtual ICollection<User> CodeName { get; set; }
        public virtual ICollection<Session> ReachedFinish { get; set; }
        public virtual ICollection<Device> Name { get; set; }
    }
}

Views/Home/Index.cshtml

System.Collections.Generic.IEnumerable<FaceToFaceWebsite.Models.PatientHomeViewModel>*@

    @{
        ViewBag.Title = "Home Page";
    }
    @Html.Partial("_Patient", Model)

Views/Home/_Patient.cshtml

@model IEnumerable<PatientListViewModel>
@foreach (var item in Model)
{
    <div>
        <h4>UserID: @item.CodeName</h4>
        <span>Finished: @item.ReachedFinish</span>
        <p>Machine: @item.Name</p>
        <hr />
    </div>

}

PatientProfile.cs(我尝试制作另一个模型作为不同的方法但没有成功)

    using System;
    using System.Collections.Generic;
    using System.ComponentModel.DataAnnotations;
    using System.ComponentModel.DataAnnotations.Schema;
    using System.Data.Entity;
    using System.Linq;
    using System.Web;
    
    namespace FaceToFaceWebsite.Models
    {
        public class PatientProfile : DbContext
        {
           public PatientProfile() : base("F2FDataEntities")
            {
    
            }
           public DbSet<User> UserID { get; set; }
           public DbSet<Device> Name { get; set; }
            //public DbSet<RestaurantReview> Reviews { get; set; }
    
            public System.Data.Entity.DbSet<FaceToFaceWebsite.Models.PatientListViewModel> PatientListViewModels { get; set; } 
        }
    }

F2FDataDB.cs(我尝试创建另一个使用 edmx 模型的数据库)

    using System;
    using System.Collections.Generic;
    using System.ComponentModel.DataAnnotations;
    using System.ComponentModel.DataAnnotations.Schema;
    using System.Data.Entity;
    using System.Linq;
    using System.Web;
    
    namespace FaceToFaceWebsite.Models
    {
        public class F2FDataEntities : DbContext 
        {
            public F2FDataEntities() : base("name=F2FDataEntities")
            {
            }
    
            public DbSet<User> UserID { get; set; }
            public DbSet<User>CodeName { get; set; }
            //public DbSet<Session> SessionDB { get; set; }
            public DbSet<Device> Name { get; set; }
    
            public System.Data.Entity.DbSet<FaceToFaceWebsite.Models.PatientListViewModel> PatientListViewModel { get; set; }
        }    
    }

我已经 post 编辑了我认为相关的所有内容,如果您需要更多信息,请告诉我。 如果解决方案很简单,我深表歉意,我是 MVC 的新手,这个问题已经持续了很长时间。

--------更新 2.0------------ Views/home/index.cshtml

@model FaceToFaceWebsite.Models.PatientListViewModel
@{
    ViewBag.Title = "Home Page";
}

@Html.Partial("_Patient", Model.PatientProfile)

views/shared/_Patient.cshtml(部分视图)

@model List<PatientProfile>
@foreach (var item in Model)
{
    <div>
        <h4>UserID: @item.CodeName</h4>
        <div>
            @*<span>UserName: @item.CodeName</span>*@
        </div>
        @*<span>Started Session at: @item.StartedAt</span>*@
        <span>Finished: @item.ReachedFinish</span>
        <p>Machine: @item.Name</p>
        <hr />
    </div>

}

patientlistviewmodel.cs

namespace FaceToFaceWebsite.Models
{
    public class PatientListViewModel
    {

        public List<Patient> PatientProfile { get; set; }
    }

    public class Patient
    {
        public int UserID { get; set; }
        public string CodeName { get; set; }
    }
}

HomeController.cs

namespace FaceToFaceWebsite.Controllers
{
    public class HomeController : Controller
    {
        public F2FDataEntities _db = new F2FDataEntities();

        public ActionResult Index()
        {
            var viewModel = new PatientListViewModel();
            viewModel.PatientProfile = new List<Patient>();
            return View(viewModel);
        }
    }
}

Models/PatientProfile.cs

namespace FaceToFaceWebsite.Models
{
    
    public class PatientProfile : DbContext
    {
       public PatientProfile() : base("F2FDataEntities")
        {

        }
       public DbSet<User> UserID { get; set; }
       public DbSet<User> CodeName{ get; set; }
       public DbSet<Device> Name { get; set; }
       public DbSet<Session> ReachedFinish { get; set; }
       
    }
    
}

我目前收到此错误:

An exception of type 'System.InvalidOperationException' occurred in System.Web.Mvc.dll but was not handled in user code

Additional information: The model item passed into the dictionary is of type 'System.Collections.Generic.List`1[FaceToFaceWebsite.Models.Patient]', but this dictionary requires a model item of type

我在 "..@Html.Partial("_patient", Model.PatientProfile)"

处收到此错误

_Patient(局部视图)

@model List<PatientProfile>

@foreach (var item in Model)
{
    <div>
        <h4>UserID: @item.CodeName</h4>
        <span>Finished: @item.ReachedFinish</span>
        <p>Machine: @item.Name</p>
        <hr />
    </div>
}

1.

您正在将 PartialView 作为结果传回:

return PartialView("_Patient", new FaceToFaceWebsite.Models.PatientListViewModel());

在您的 Index 函数中将其更改为 return View(model);。这将 return 您的主页 "Views/Home/Index.cshtml",并且在此索引视图中您有:

@Html.Partial("_Patient", Model)

这将渲染局部视图。但是您将错误的模型传递给了您的索引视图:在控制器中您传递了 PatientListViewModel但是在您的索引中您有:IEnumerable<FaceToFaceWebsite.Models.PatientHomeViewModel>.

所以要么你通过 IEnumerable<FaceToFaceWebsite.Models.PatientHomeViewModel>

像这样:

public ActionResult Index(){
return PartialView(new FaceToFaceWebsite.Models.PatientListViewModel());
}

然后你可以像这样调用局部视图:

@model IEnumerable<FaceToFaceWebsite.Models.PatientHomeViewModel>

    @{
        ViewBag.Title = "Home Page";
    }


    @Html.Partial("_Patient", Model)
  1. 你应该做什么

    控制器:

    public ActionResult Index()
    {
        var viewModel = PatientListViewModel();
        viewModel.PatientList = new List<Patients>();
        viewModel.CustomerList = new List<Cusotmer>();
        return View(viewModel);
    }
    

Index.cshtml

        @model PatientListViewModel

    @* Considering your partial view is in Shared Foler*@

// Note Passing the Correct Model to Partial View

        @Html.Partial("_Patient", Model.PatientsList)

// Another Example:

    @Html.Partial("_Customer", Model.CustomerList)

您的_Patient.cshtml(局部视图)

@model List<PatientsList>

@foreach(var item in Model){
item.Name

}

你的_Customer.cshtml(局部视图) // 另一个例子

@model List<Custom>

@foreach(var item in Model){
item.Name

}

你的视图模型:

public class PatientListViewModel{

public List<Patient> PatientsList {get;set;}
public List<Customer> CustomerList{get;set;}
}

public class Patient{
public string Name {get;set;
}
// Another Example
public Class Customer{
public string Name{get;set;
}

更新

    @model FaceToFaceWebsite.Models.PatientListViewModel

        @{
            ViewBag.Title = "Home Page";
        }

    // PatientListViewModel this is the Name of you class
    // To Access your Model you always have to use Model. Not the Class Name
// PatientListViewModel is the Class name
// Model is the Object --> You passed from Controller.
// Use Model.PatientProfile
// Not PatientListViewModel.PatientProfile
    @Html.Partial("_Patient", Model.PatientProfile)