迭代列表中的错误在C＃中 [英] Error during iterates list iin C#
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问题描述
我有一个包含以前加载值的员工的列表。我尝试在foreach的视图中迭代它们，但它没有办法。编译时出错：
I have a List with employees with previously loaded values. I try to iterates them in a view with a foreach but there is no way it works. I have an error when compile:
The model element passed to the dictionary is of type
'Humano2.Models.Alumno', but this dictionary requires a model element of type 'System.Collections.Generic.List1 [Humano2.Models.Alumno]'类型的模型元素。
我有什么试过：
班级角色
.
What I have tried:
Class persona
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Humano2.Models
{
public class Persona
{
public int Dni;
public string Nombre;
public Persona()
{
}
}
}
班级校友
Class alumno
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Humano2.Models
{
public class Alumno : Persona
{
public int Edad;
public Alumno(string nombre):base()
{
Edad = 18;
if (lista.Count == 0)
{
this.altaAlumno(1111, "Julian", 20);
this.altaAlumno(2222, "Pedro", 30);
this.altaAlumno(3333, "Pablo", Edad);
}
}
public Alumno(int edad):this()
{
this.Edad = edad;
}
public Alumno()
{
this.Nombre = "NN";
}
public static List<Alumno> lista = new List<Alumno>();
public void altaAlumno(int Dni, string Nombre, int Edad)
{
lista.Add(new Alumno() { Dni = Dni, Nombre = Nombre, Edad = Edad });
}
}
控制器
controller
using Humano2.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace Humano2.Controllers
{
public class HomeController : Controller
{
// GET: Home
public ActionResult Index()
{
Alumno p1 = new Alumno();
return View(p1);
}
}
}
查看
View
@model List<Humano2.Models.Alumno>
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
</head>
<body>
<div>
@foreach (Humano2.Models.Alumno c in Model)
{
<p>@c.Nombre</p>
<p>@c.Dni</p>
<p>@c.Edad</p>
}
</div>
</body>
</html>
推荐答案
您将返回单个Alumno实体查看
You are returning single Alumno entity to view
Alumno p1 = new Alumno();
return View(p1);
并在视图中使用列表。
首先清除你的要求。你是否真的想在视图上显示列表，如果没有那么不要在视图中使用列表。
两个选项
1.从视图中删除列表
2.从控制器传递校友名单
And using as list in view.
First clear your requirement. Are you really want to show list on view if not then dont use list in view.
Two option
1. Either remove list from view
2. Pass list of alumno from controller
List<Alumno> p1 = new List<Alumno>();
p1.Add(new Alumno());
return View(p1);
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