如何使用具有Razor视图的实体框架(.edmx模型)为MVC4或MVC 5创建局部视图？

Question

我在尝试从.edmx模型中创建家庭控制器的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并来到这里希望得到一些帮助和建议.

目标:_Patient.cshtml使用模型中的.edmx模型在主页上渲染局部视图.我希望你能告诉我哪里出错了,因为它不起作用.

问题是什么？

我收到多个错误,例如:

model :: EntityType模型没有定义键.定义此实体类型的键.

传递到字典中的模型项是"模型"类型,但此字典需要类型为"System.Collections.Generic.IEnumerable"的模型项.

使用泛型类型'system.collections.generic.ienumerable需要1个类型参数MVC

目前我收到了这个错误, 但我觉得它位于一长串列表的前面.

传递到字典中的模型项的类型为'FaceToFaceWebsite.Models.PatientListViewModel',但此字典需要类型为'System.Collections.Generic.IEnumerable`1 [FaceToFaceWebsite.Models.PatientListViewModel]'的模型项.

下面是.edmx (因为我无法发布图片..

用户(edmx)-Properties- UserID CodeName UseBriefInstructions Device_DeviceID -Navigation Properties- Device RegimeItems

设备 -Properties- DeviceID名称 - 导航属性 - 用户

Session -Properties- SessionID ActiveUserID ActiveDeviceID StartedAt ReachedFinish -Navigation Properties- SessionExcercises

(Edmx比显示的更大,但是这些是我目前需要使用的模型.但是会话和用户通过另一个模型实际上是链接的)

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; }
    }
}

查看/主页/ Index.cshtml

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

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

查看/主页/ _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(我尝试将另一个模型作为一种不同的方法,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Db)

    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; }
        }    
    }

我发布了我认为相关的所有内容,如果您需要更多信息,请告诉我.我很抱歉,如果解决方案很简单,对MVC来说是新手,这个问题已经持续了一段时间.

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

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

@ Html.Partial("_ Patient",Model.PatientProfile)

views/shared/_Patient.cshtml(局部视图)

@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);
        }
    }
}

型号/ 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:

System.Web.Mvc.dll中出现"System.InvalidOperationException"类型的异常,但未在用户代码中处理

附加信息:传递到字典中的模型项的类型为'System.Collections.Generic.List`1 [FaceToFaceWebsite.Models.Patient]',但此字典需要类型的模型项

我在".. @ Html.Partial("_ patient",Model.PatientProfile)中收到此错误"

_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>
}

Answer 1

1.

您将PartialView作为结果传回:

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

将其更改为返回View(model);在索引功能中.这将返回您的主页"Views/Home/Index.cshtml",并在此索引视图中您有:

@Html.Partial("_Patient", Model)

这将渲染部分视图.但是你将错误的模型传递给你的索引视图:在你传递的控制器中PatientListViewModel但是在索引中你有: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Partial View:

@model IEnumerable<FaceToFaceWebsite.Models.PatientHomeViewModel>

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


    @Html.Partial("_Patient", Model)

2. 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)

你的_Patient.cshtml(局部视图)

@model List<PatientsList>

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

}

你的_Customer.cshtml(部分视图) //另一个例子

@model List<Custom>

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

}

你的ViewModel:

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;
}

UPDATE

    @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)