MVC foreach 多重嵌套

[bychgh]

mvc foreach 多重嵌套查询，两张表，有对应字段 grade_id 和student_gradeId

model: Grade 和 Student，以及两者的集合类

Garade_Student

public class Grade_Student
    {
        public IList<Grade> gradeList { get; set; }
        public IList<Students> studentList { get; set; }
        public Grade_Student(IList<Grade> gradelists, IList<Students> studentlists)
        {
            this.gradeList = gradelists;
            this.studentList = studentlists;
        }

    }

controller 中代码

 public ActionResult Index()
        {
            var s_list = reposit.getStudentList();        //全部
            var g_list=reposit.getGrade();
            //var s_list_b = reposit.getStudentByGID(1);  // 根据年级ID查询
            return View(new Grade_Student(g_list, s_list));
        }

根据 student_gradeId，查询
view 中查询结果如

五年级
aa
bb
四年级
cc
dd
……

代码该怎么写

[子夜__]

VIEW中 先把返回的数据
拆分成两个LIST，
然后就用这种

<% IList<int> Arrylist = (ViewData["NewAgeList"] as IEnumerable<int>).ToList<int>(); %>
        <%= Html.Display("<br/>") %>
        <% for (int i = 0; i < Arrylist.Count; i++) %>
        <% { %>
        <%= Html.Label(Arrylist[i].ToString()) %>
        <% } %>
        <br />

里面在嵌套一个

<% IList<int> Arrylist = (ViewData["NewAgeList"] as IEnumerable<int>).ToList<int>(); %>
        <%= Html.Display("<br/>") %>
        <% for (int i = 0; i < Arrylist.Count; i++) %>
        <% { %>
        <%= Html.Label(Arrylist[i].ToString()) %>
        <% } %>
        <br />

类似这样

参考

[bychgh]

[Quote=引用 1 楼 wxr0323 的回复:]
VIEW中 先把返回的数据
拆分成两个LIST，
然后就用这种


HTML code
<% IList<int> Arrylist = (ViewData["NewAgeList"] as IEnumerable<int>).ToList<int>(); %>
<%= Html.Display("<br/>") %>
<% for (int i =……
[/Quote]

怎样把第一个嵌套的 值传 给里面的foreach 来查询？

[yhtapmys]

[Quote=引用 2 楼 bychgh 的回复:]
引用 1 楼 wxr0323 的回复:
VIEW中 先把返回的数据
拆分成两个LIST，
然后就用这种


HTML code
<% IList<int> Arrylist = (ViewData["NewAgeList"] as IEnumerable<int>).ToList<int>(); %>
<%= Html.Display("<br/>") %>
<% for (in……
[/Quote]

根据Students 类里的Grade ID
别没关联哈

[bychgh]

[Quote=引用 3 楼 yhtapmys 的回复:]
引用 2 楼 bychgh 的回复:
引用 1 楼 wxr0323 的回复:
VIEW中 先把返回的数据
拆分成两个LIST，
然后就用这种


HTML code
<% IList<int> Arrylist = (ViewData["NewAgeList"] as IEnumerable<int>).ToList<int>(); %>
<%= Html.Display("<b……
[/Quote]

我的意思是怎么去关联 这Grade ID

[zhenze0]

使用强类型的ViewModel
index.aspx 首行：

<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<xxx.Grade_Student>" %>

<% foreach (var grade in Model.gradeList) {%>
    <%=garde.Name%><br/>
    <%foreach(var student in Model.studentList.Where(a=>a.student_gradeId==grade.grade_id ) ){%>
        <%=student.Name%>
        <br/>


    <%}
}%>

[阿非]

Razor engine

@foreach (var g in Model.GradeList)
{ 
    <div>
        @g.Title
        @foreach (var s in Model.StudentList)
        {
            <span>
                @if (s.Grade_No == g.No)
                {
                    @s.Name
                } </span>
        }
    </div>                  
}

M

public class Grade
    {
        public int No { get; set; }
        public string Title { get; set; }
    }

    public class Student
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public int Grade_No { get; set; }
    }

    public class ClassPackaging
    {
        public IList<Grade> GradeList { get; set; }
        public IList<Student> StudentList { get; set; }

        public ClassPackaging()
        {
            GradeList = new List<Grade>()
                            {
                                new Grade() {No = 1, Title = "一年级"},
                                new Grade() {No = 2, Title = "二年级"},
                                new Grade() {No = 3, Title = "三年级"}
                            };

            StudentList = new List<Student>()
                            {
                                new Student(){Grade_No=1,ID=1,Name="小明"},
                                new Student(){Grade_No=1,ID=2,Name="小王"},
                                new Student(){Grade_No=1,ID=3,Name="小李"},
                                new Student(){Grade_No=2,ID=4,Name="小刘"},
                                new Student(){Grade_No=2,ID=5,Name="小张"},
                                new Student(){Grade_No=3,ID=6,Name="小冯"},
                                new Student(){Grade_No=3,ID=7,Name="小邓"}

                            };

        }

        public ClassPackaging(IList<Grade> gradelist, IList<Student> studentlist)
        {
            GradeList = gradelist;
            StudentList = studentlist;
        }


    }

C

[AcceptVerbs(HttpVerbs.Get)]
        //[UrlAuthorize]
        public ActionResult ActionName()
        {
            return View(new ClassPackaging());
        }