Javascript 从另一个DropDownList填充DropDownList
我有两个相关的模型Javascript 从另一个DropDownList填充DropDownList,javascript,c#,jquery,asp.net,entity-framework,Javascript,C#,Jquery,Asp.net,Entity Framework,我有两个相关的模型 public partial class bs_delivery_type { public decimal delivery_id { get; set; } public decimal delivery_city_id { get; set; } public string delivery_address { get; set; } public virtual bs_cities bs_cities { get; set; }
public partial class bs_delivery_type
{
public decimal delivery_id { get; set; }
public decimal delivery_city_id { get; set; }
public string delivery_address { get; set; }
public virtual bs_cities bs_cities { get; set; }
}
第二个:
public partial class bs_cities
{
public bs_cities()
{
this.bs_delivery_type = new HashSet<bs_delivery_type>();
}
public decimal cities_id { get; set; }
public string cities_name { get; set; }
public virtual ICollection<bs_delivery_type> bs_delivery_type { get; set; }
}
当我在第一个下拉列表中选择city
时,在第二个下拉列表中必须出现带有delivery\u address
的绑定列表,其中delivery\u city\u id=cities\u id
(从第一个下拉列表)
怎么做
编辑:
我尝试了@Izzy评论中的方法,所以这里是我的实际观点:
@model Bike_Store.Models.DeliveryModel
@{
ViewBag.Title = "Checkout";
}
<script src="~/Scripts/bootstrap.min.js"></script>
<script src="~/Scripts/jquery-3.1.1.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></script>
<script type="text/javascript">
function GetDelivery(_stateId) {
var procemessage = "<option value='0'> Please wait...</option>";
$("#ddldelivery").html(procemessage).show();
var url = "/Shop/GetDeliveryByCityId/";
$.ajax({
url: url,
data: { cities_id: _stateId },
cache: false,
type: "POST",
success: function (data) {
var markup = "<option value='0'>Select adress</option>";
for (var x = 0; x < data.length; x++) {
markup += "<option value=" + data[x].Value + ">" + data[x].Text + "</option>";
}
$("#ddldelivery").html(markup).show();
},
error: function (reponse) {
alert("error : " + reponse);
}
});
}
</script>
<h2>Checkout</h2>
@using (Html.BeginForm())
{
@Html.DropDownListFor(m=>m.CitiesModel, new SelectList(Model.CitiesModel, "cities_id", "cities_name"), new {@id = "ddldelivery", @style="width:200px", @onchange="javascript:GetDelivery(this.value);"})
<br />
<br />
<select id="ddldelivery" name="ddldelivery" style="width:200px">
</select>
<br /><br />
我将
@id=“ddldelivery”
更改为@id=“ddlcity”
,它现在可以工作了以下指南将向您展示:
public IActionResult _deliveryTypePartial(decimal city_id)
{
List<bs_delivery_type> model = context.bs_delivery_types.Where(row => row.delivery_city_id == delivery_city_id).ToList();
return PartialView(model);
}
- 创建局部视图
- 将cityid作为输入并输出传递地址列表
- 将局部视图加载到您的选择中
@model List<bs_delivery_type>
@foreach(var item in Model)
{
<option value="@item.delivery_id">
@item.delivery_address
</option>
}
这将把局部视图加载到第二个下拉列表中
PS:当我完成这个问题时,您已经使用了直接ajax方法,我同意这两种方法在这种情况下同样适用。如果需要填充的实际对象要复杂得多,您可能可以使用此处概述的方法。当第一个下拉列表中的选择发生更改时,您可能需要调用一个函数来获取第二个下拉列表。使用onchange函数在选择更改时调用函数,然后使用js/jquery填充第二个下拉列表。同意@Hirav Sampat,请使用实际的cshtml编辑您的问题,我很乐意为您提供部分视图解决方案。第二个DDL是否与第一个DDL位于同一视图上?我建议您对第二个DDL使用部分视图&bind
SelectList
from action method,该方法处理来自第一个DDL的AJAX请求。@Tetsuyayayamamoto它现在可以工作了,我在DropDownList中漏掉了“@id”
@Html.DropDownListFor(m=>m.CitiesModel, new SelectList(Model.CitiesModel, "cities_id", "cities_name"), new {@id = "ddldelivery", @style="width:200px", @onchange="javascript:GetDelivery(this.value);"})
@model List<bs_delivery_type>
@foreach(var item in Model)
{
<option value="@item.delivery_id">
@item.delivery_address
</option>
}
public IActionResult _deliveryTypePartial(decimal city_id)
{
List<bs_delivery_type> model = context.bs_delivery_types.Where(row => row.delivery_city_id == delivery_city_id).ToList();
return PartialView(model);
}
$('#ddldelivery').load("/ControllerName/_deliveryTypePartial?city_id=" _stateId);