在 ASP.Net MVC3 中使用 jQuery 动态填充下拉列表 [英] Dynamically populate the drop-down using jQuery in ASP.Net MVC3

问题描述

我有两个模型:

公开课ProfessionalModels{公共字符串全名 { 获取；放;}公共 int ID { 获取；放;}}

和

公共类ClassModels{公共 int ID { 获取；放;}公共字符串教授{得到；放;}公共十进制名称 { 获取；放;}}

在我的视图中有一个添加类的表单:

@model MvcApp.Models.ClassModels@{ViewBag.Title = "创建";}<h2>创建</h2><script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script><script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>@using (Html.BeginForm()) {@Html.ValidationSummary(true)<字段集><legend>ClassModels</legend><div class="editor-label">@Html.LabelFor(model => model.Name)

<div class="editor-field">@Html.EditorFor(model => model.Name)@Html.ValidationMessageFor(model =>model.Name)

<p><输入类型=提交"值=创建"/></p></fieldset>}<div>@Html.ActionLink("返回列表", "索引")

我想在课堂视图中添加一个下拉菜单，其中列出了所有可用的教授.教授在 db 中，我可以轻松地从控制器调用 db 并将所有教授加载到某个列表/数组中.我需要有关如何使用 jQuery 向教授填充下拉列表的帮助.

解决方案

在你的控制器中:

 [HttpGet]公共虚拟 JsonResult LoadInfo(){var 查询 = _repository.GetInformation();//这里返回数据.返回 Json(查询，JsonRequestBehavior.AllowGet)；}

那么在你看来:

然后使用 jQuery 加载下拉列表

function LoadInfo() {$.getJSON("@Url.Action(MVC.ControllerName.MethodName())", null,功能(数据){$("#info").empty();$.each(数据，函数(){$("#info").append($("<option/>").val(this.Id).text(this.Name));});});}

这假设 Id 和 Name 是您的对象的属性.您可以根据要加载的下拉列表使用 ID 和 FullName.我还使用 T4MVC 来获取不同的方法名称.

希望这会有所帮助，

I have two models:

public class ProfessorModels
{
    public string FullName { get; set; }
    public int ID { get; set; }
}

and

public class ClassModels
{
    public int ID { get; set; }
    public string Professor { get; set; }
    public decimal Name { get; set; }
}

in my View there is a form to add the class:

@model MvcApp.Models.ClassModels

@{
    ViewBag.Title = "Create";
}

<h2>Create</h2>

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)
    <fieldset>
        <legend>ClassModels</legend>

        <div class="editor-label">
            @Html.LabelFor(model => model.Name)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Name)
            @Html.ValidationMessageFor(model => model.Name)
        </div>

        <p>
            <input type="submit" value="Create" />
        </p>
    </fieldset>
}

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

I would like to add a drop-down menu to the Class View, which lists all the available professors. Professors are in db, and I can easily make a call to db from controller and load all professors in to some list/array. I need help with how to populate the drop-down with professors using jQuery.

解决方案

In your controller:

    [HttpGet]
    public virtual JsonResult LoadInfo()
    {
        var query = _repository.GetInformation(); //Here you return the data. 
        return Json(query, JsonRequestBehavior.AllowGet);
    }

Then in your view:

<select id="info"></select>

Then you load the drop down using jQuery

function LoadInfo() {

    $.getJSON("@Url.Action(MVC.ControllerName.MethodName())", null,
        function (data) {

            $("#info").empty();

            $.each(data, function () {
                $("#info").append($("<option />").val(this.Id).text(this.Name));
            });

        });
}

This assumes that Id and Name are properties of your object. You could use ID and FullName depending on which drop down you're loading. I also use T4MVC to get the different method names.

Hope this helps,

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