c# - 如何将 id 从 Razor View 传递到 ASP .Net MVC 中的 Controller 操作方法？

Question

所以，这就是我的第一个演示 MVC 项目困扰我的地方。在我的主视图 MyAction.cshtml 中，当您单击 Student UserName 超链接时，包含 Student Details 的部分 View 将呈现在 StudentDetails <div> 中。 .

这是我的主要观点:

@model IEnumerable<MvcApplication4.ViewModels.StudentViewModel>  
@{
    ViewBag.Title = "MyAction";
    Layout = "~/Views/Shared/_myTemplateLayoutPage.cshtml";
    }

<script>
    function RegisterClickHanders() {

        var url = '@Url.Action("DisplayClickedView","Private")'; 
        $('.editDetails').click(function () {
            var btnvalue = $('.editDetails').attr("value");
            var srchvalue = $(this).closest("tr").children().first().text();
            $('#Add_Update_Details').load(url, { searchText: btnvalue, searchValue: srchvalue });
        });
    }
</script>

<div id="content">
    <div id="mainpage">

    <h2>Registration Details</h2>
        <ul>
        @foreach(var item in Model) 
        {
            <li>
                @Ajax.ActionLink(item.UserName,
                "GetUserDetails", 
                new { id = item.Student.StudentId },
                    new AjaxOptions
                    {
                        UpdateTargetId = "StudentDetails",
                        InsertionMode = InsertionMode.Replace,
                        HttpMethod = "GET",
                        OnComplete="RegisterClickHanders"
                    }
                )
            </li>
        }
        </ul>
        <div id ="StudentDetails"></div>
        <div id ="Add_Update_Details"></div>
    </div>

    <div id="sidebarbottom"></div>
</div>

这是渲染的部分 View :

@model MvcApplication4.ViewModels.StudentViewModel

<h2>Student Details</h2>
<table border="1">
    <tr>
        <th>
            Name
        </th>
        <th>
            User Name
        </th>
        <th>
            Department
        </th>
        <th colspan="2">
            Actions
        </th>
    </tr>
    <tr>
        <td>
            @Html.DisplayFor(x => x.StudentFullName)
        </td>
        <td>
            @Html.DisplayFor(x => x.UserName)
        </td>
        <td>
            @Html.DisplayFor( x => x.DepartmentName)
        </td>
        <td>
            <input type="submit" class="editDetails" value="Edit Details" name="Command" />
        </td>
        <td>
            <input type="submit" class="addDetails" value="Add Details" name="Command" />
        </td>
    </tr>
</table>

现在，我从 StudentViewModel 显示的详细信息也包含 StudentId。这是 StudentViewModel 类:

//View Model
public class StudentViewModel
{
    public Student Student { get; set; }

    public int StudentId { get; set; }

    [Display(Name = "StudentName")]
    [Required(ErrorMessage = "Student Name cannot be left blank")]
    public String StudentFullName
    {
        get
        {
            return String.Format("{0} {1}", Student.FirstName, Student.LastName);
        }
    }

    public String UserName { get; set; }

    [DataType(DataType.Password)]
    public String Password { get; set; }

    [DataType(DataType.Password)]
    [Compare("Password",ErrorMessage="Passwords do not match")]
    [Display(Name="Confirm Password")]
    public String C_Password { get; set; }

    [Display(Name = "Department Name")]
    public String DepartmentName { get; set; }

}

但我只在 View 中显示 StudentFullName 、 UserName 和 DepartmentName 。

     [HttpGet]
    public PartialViewResult GetUserDetails(int? id)
    {
        StudentContext context = new StudentContext();

        var result = context.Students.Where(s => s.StudentId == id)
            .Include(s => s.Department)
            .Select(s => new StudentViewModel
                {
                    Student = s,
                    UserName = s.UserName,
                    DepartmentName = s.Department.DepartmentName
                }).First();

        return PartialView("_StudentDetails",result);

    }

但是当单击“编辑详细信息”按钮时，我希望为该记录呈现一个 View 。我想做的是:

   var url = '@Url.Action("DisplayClickedView","Private")'; 
        $('.editDetails').click(function () {
            var btnvalue = $('.editDetails').attr("value");
            var srchvalue = $(this).closest("tr").children().first().text();
            $('#Add_Update_Details').load(url, { searchText: btnvalue, searchValue: srchvalue });
        });

但这会在 srchvalue 中获取 StudentFullName，并基于此呈现部分 View 。但我希望根据 View 中不存在的 StudentId 本身呈现它。

我如何将 StudentId 传递给操作 DisplayClickedView，以便根据 ID 本身进行更新或编辑？

Answer 1

当我想在 html 属性中有一些值并在 javascript 中访问它时，我喜欢使用 data-* 属性。

所以，你可以这样做:

<input type="submit" class="editDetails" value="Edit Details" name="Command" data-student-id="@Model.StudentId"/>

并在您的 javascript 中获取它:

var studentId = $('.editDetails').data("student-id");

这样您就不必在表格中添加新的“隐藏”列，也不必更改按钮的默认属性。