如何在 MVC 项目的视图中添加日期选择器

Question

我正在学习 .NET MVC，但在我的视图上添加日期选择器时遇到一些困难。

我想做的是创建名为 Person.cs:

的 Model

public class Person
{
    public int Id { get; set; }

    [Required(ErrorMessage = "First name is required")]
    public string FirstName { get; set; }
    public string LastName { get; set; }

    [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy}")]
    public DateTime? DateOfBirth { get; set; }
}

_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>
    @using System.Web.Optimization
    @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("List", "ListPerson", "Person")</li>
                </ul>
            </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")
    @Scripts.Render("~/bundles/jqueryval")
    @Scripts.Render("~/bundles/bootstrap")
    @RenderSection("scripts", required: false)
</body>
</html>

BundleConfig.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Optimization;

namespace WebApplication1.App_Start
{
    public class BundleConfig
    {

        // For more information on bundling, visit http://go.microsoft.com/fwlink/?LinkId=301862
        public static void RegisterBundles(BundleCollection bundles)
        {
            bundles.Add(new ScriptBundle("~/bundles/jquery").Include(
                        "~/Scripts/jquery-{version}.js"));

            bundles.Add(new ScriptBundle("~/bundles/jqueryval").Include(
                        "~/Scripts/jquery.validate*"));

            // Use the development version of Modernizr to develop with and learn from. Then, when you're
            // ready for production, use the build tool at http://modernizr.com to pick only the tests you need.
            bundles.Add(new ScriptBundle("~/bundles/modernizr").Include(
                        "~/Scripts/modernizr-*"));

            bundles.Add(new ScriptBundle("~/bundles/bootstrap").Include(
                      "~/Scripts/bootstrap.js",
                      "~/Scripts/respond.js"));

            bundles.Add(new StyleBundle("~/Content/css").Include(
                      "~/Content/bootstrap.css",
                      "~/Content/site.css"));
        }
    }
}

我正在创建一个名为 Create.chstml 的视图，它用于创建一个新用户。

    @model WebApplication1.Models.Person

    @{
        ViewBag.Title = "Create";
    }

    <h2>Create</h2> 

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Person</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.FirstName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.FirstName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.FirstName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.LastName, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.LastName, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.LastName, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.DateOfBirth, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.DateOfBirth, new { htmlAttributes = new { @class = "datepicker form-control" } })
                @Html.ValidationMessageFor(model => model.DateOfBirth, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}

<div>
    @Html.ActionLink("Back to List", "ListPerson")
</div>

<link href="~/Content/themes/base/jquery-ui.min.css" rel="stylesheet" />

@section Scripts {
    <script src="~/Scripts/jquery-ui-1.12.1.min.js"></script>
    @Scripts.Render("~/bundles/jqueryval")

    <script>
        $(function() {
            $(".datepicker").datepicker(
                {
                    dateFormat: "yy/mm/dd",
                    changeMonth: true,
                    changeYear : true
                });
        });
    </script>
}

是否有任何最简单的方法来指示它必须弹出一个日期选择器？

@Html.EditorFor(model => model.DateOfBirth, new { htmlAttributes = new { @class = "form-control datepicker" } })

我已经在 packet-nugget 上安装了 JQuery.UI.Combined

经过一些研究，我发现了这个 link： https://jqueryui.com/datepicker/

<script>
  $( function() {
    $( "#datepicker" ).datepicker();
  } );
</script>
<p>Date: <input type="text" id="datepicker"></p>

实际上我不知道如何在我的代码上实现。

我正在尝试遵循此 link 也：

https://forums.asp.net/t/2134739.aspx?How+to+add+datepicker+to+EditorFor+field+in+asp+net+mvc+5

从该视频中找到的解决方案：https://www.youtube.com/watch?v=Yuo2XX5_rYo

Answer 1

问题可能是您的 jQuery 选择器：

$("#datepicker").datepicker();

目前这将找到带有 id datepicker 的 HTML 元素。查看您的 HTML 片段，它将生成带有 id DateOfBirth 的输入（仔细检查它的外观就像你检查元素时一样）。尝试：

$("#DateOfBirth").datepicker();

更好的选择是向 HTML 元素添加 class datepicker（或类似的），然后将其用作选择器，以便它适用于您选择的所有日期选择器以后不妨使用：

查看

@Html.EditorFor(model => model.DateOfBirth, new { htmlAttributes = new { @class = "form-control datepicker" } })

Javascript

$(".datepicker").datepicker();

我还会研究选择器的工作原理，以便您可以更好地确定如何使用它们，例如，如果它以 # 为前缀，它将查找具有该 id 属性的元素。如果它以 . 为前缀，那么它将查找具有您指定的 class 的所有元素。

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