如何在mvc中使用ViewModel從視圖獲取多個串列到控制器

你能幫我嗎，使用視圖模型從視圖控制器獲取多個表資料作為串列。下面是我的代碼它的作業，直到將多個模型傳遞給 View。我無法從控制器操作方法中的視圖中獲取這些更新的值來更新資料。

我有兩個模型。

public class Teacher  
{  
    public int TeacherId { get; set; }  
    public string Code { get; set; }  
    public string Name { get; set; }  
}   
  
public class Student  
{  
    public int StudentId { get; set; }  
    public string Code { get; set; }  
    public string Name { get; set; }          
}

將模型中的模型作為串列傳遞

public class ViewModel  
{  
    public IEnumerable<Teacher> Teachers { get; set; }  
    public IEnumerable<Student> Students { get; set; }  
}  

在控制器中，我定義了視圖模型

[HttpGet]
public ActionResult IndexViewModel()  
    {  
        ViewModel mymodel = new ViewModel();  
        mymodel.Teachers = GetTeachers();  
        mymodel.Students = GetStudents();  
        return View(mymodel);  
    }

在我的視圖中，我擁有正確的所有值，但是當我更改相同的值時提交。更新的資料無法獲取操作方法。請幫助我。

@using MultipleModelInOneView;  
@model ViewModel   
@{  
    ViewBag.Title = "Home Page";  
}  
@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()
<table>  
    <tr>  
        <th>Id</th>  
        <th>Code</th>  
        <th>Name</th>  
    </tr>  
    @foreach (Teacher teacher in Model.Teachers)  
    {  
        <tr>  
            <td>@Html.DisplayFor(model => @teacher.TeacherId)</td>  
            <td>@Html.EditorFor(model => @teacher.Code)</td>  
            <td>@Html.EditorFor(model => @teacher.Name)</td>  
        </tr>  
    }  
</table>  
   
<p><b>Student List</b></p>  
   
<table>  
    <tr>  
        <th>Id</th>  
        <th>Code</th>  
        <th>Name</th>  
        <th>Enrollment No</th>  
    </tr>  
    @foreach (Student student in Model.Students)  
    {  
        <tr>  
            <td>@Html.DisplayFor(model => @student.StudentId)</td>  
            <td>@Html.EditorFor(model => @student.Code)</td>  
            <td>@Html.EditorFor(model => @student.Name)</td>   
        </tr>  
    }  
</table> 

<input type="submit" value="Save" class="btn btn-primary" />
}

在這里我無法從視圖中獲取串列

[HttpPost]
public ActionResult IndexViewModel("Here I'm not able to Get List from View")  
    {           
        return View();  
    }

uj5u.com熱心網友回復：

嘗試用 for 回圈替換 foreach 回圈

@for (var i=0; i <  Model.Teachers.Count; i =1)  
    {  
        <tr>  
            <td>@Html.DisplayFor(model =>model.Teachers[i].TeacherId)</td>  
            <td>@Html.EditorFor(model => model.Teachers[i].Code)</td>  
            <td>@Html.EditorFor(model => model.Teachers[i].Name)</td>  
        </tr>  
    }  

@for (var i=0; i <  Model.Students.Count; i =1)  
    {  
        <tr>  
            <td>@Html.DisplayFor(model => model.Students[i].StudentId)</td>  
            <td>@Html.EditorFor(model =>  model.Students[i].Code)</td>  
            <td>@Html.EditorFor(model =>  model.Students[i].Name)</td>   
        </tr>  
    }  

和控制器動作

public ActionResult IndexViewModel(ViewModel viewModel)  
    {           
       ....  
    }

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