如何在通过 Ajax.ActionLink 调用的动态加载的 ASP.NET MVC 部分视图上初始化 jsTree

How can I initialize jsTree on a dynamically loaded ASP.NET MVC Partial View that is called via an Ajax.ActionLink

我想创建一个使用 jsTree (http://www.jstree.com) 的 ASP.NET MVC 5 应用程序。我正在使用 ASP.NET AJAX 在运行时动态加载页面。在动态加载的分部视图上哪里可以初始化jsTree?

当我启动网络应用程序时,一切正常。我看到这样的树:

但现在我单击 'Change Tree View' 并通过 Ajax.ActionLink 加载了部分视图。现在树将不会呈现为 TreeView,而只会呈现为普通列表:

你可以像这样初始化树:

$('#treeView').jstree();

如何为动态加载的分部视图初始化TreeView?我尝试了 Action Link 的 OnComplete 回调函数,但没有用。


TreeTest\Controllers\HomeController.cs:

using System.Web.Mvc;

namespace TreeTest.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        public PartialViewResult ChangeTreeView()
        {
            return PartialView();
        }
    }
 }

TreeTest\Views\Shared_Layout.cshtml:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>@ViewBag.Title - My ASP.NET Application</title>
    <link rel="stylesheet" href="/Content/vakata-jstree-a0767ce/dist/themes/default/style.min.css" />
    @Styles.Render("~/Content/css")
    @Scripts.Render("~/bundles/modernizr")
</head>
<body>
    <div class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                @Html.ActionLink("Application name", "Index", "Home", new { area = "" }, new { @class = "navbar-brand" })
            </div>
            <div class="navbar-collapse collapse">
                <ul class="nav navbar-nav">
                    <li>@Html.ActionLink("Home", "Index", "Home")</li>
                </ul>
                <p class="nav navbar-text navbar-right">Hello, @User.Identity.Name!</p>
            </div>
        </div>
    </div>
    <div class="container body-content">
        @RenderBody()
        <hr />
        <footer>
            <p>&copy; @DateTime.Now.Year - My ASP.NET Application</p>
        </footer>
    </div>

    @Scripts.Render("~/bundles/jquery",
                    "~/bundles/jqueryajax")
    @Scripts.Render("~/bundles/bootstrap")
    @Scripts.Render("~/bundles/scripts")
    @RenderSection("scripts", required: false)
    <script src="/Content/vakata-jstree-a0767ce/dist/jstree.min.js"></script>
</body>
</html>

TreeTest\Views\Home\Index.cshtml:

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

<div id="treeView">
    <ul>
        <li>Item 1</li>
        <li>Item 2</li>
        <li>Item 3</li>
        <li>
            Item 4
            <ul>
                 <li>Item 4.1</li>
            </ul>
        </li>
    </ul>
</div>

@Ajax.ActionLink("Change Tree View", "ChangeTreeView", new RouteValueDictionary(), new AjaxOptions { UpdateTargetId = "treeView", OnComplete = "TreeViewChangeOnComplete" }) 

TreeTest\Views\Home\ChangeTreeView.cshtml:

<ul>
    <li>New Item 1</li>
    <li>New Item 2</li>
    <li>New Item 3</li>
    <li>
        New Item 4
        <ul>
            <li>New Item 4.1</li>
        </ul>
    </li>
</ul>

TreeTest\Scripts\JavaScript.js:

$(document).ready(function () {
    $('#treeView').jstree();
});

function TreeViewChangeOnComplete() {
    $('#treeView').jstree();
}

我不熟悉 .NET 的工作方式,但我猜它只是将指定元素的 HTML 内容与从 AJAX 调用加载的内容进行交换。

因为实例已经在节点上创建 (#treeView),所以第二个 jstree 调用什么都不做(实际上它只是检索已经存在的实例)。

我只是猜测,还没有测试过,但试一试:

function TreeViewChangeOnComplete() {
    $('#treeView').jstree(true).destroy(true);
    $('#treeView').jstree();
}