如何通过多选列表的选择项背到控制器？ [英] How to pass multiselect list's selected Items back to controller?
问题描述
我开发一个MVC应用程序，其中包含了多选下拉列表。
我想下拉的多项选择的ID的。
I am developing a MVC application which contains the multiselect dropdown list. I want to get the ID's of multiple selected items of the drop down.
我在模型中的code
I have the code in model
namespace CustomerDEMOForMultiselect.Models
{
public class Customer
{
private int _ID;
private string _Name;
private double _Amt;
public int ID { get { return _ID; } set { _ID = value; } }
public string Name { get { return _Name; } set { _Name = value ; } }
public double Amt { get { return _Amt; } set { _Amt = value; } }
}
}
和控制器code是
namespace CustomerDEMOForMultiselect.Controllers
{
public class CustomerController : Controller
{
public ActionResult DisplayCustomer()
{
Customer oCustomer = new Customer();
List<Customer> CustomersList = new List<Customer>();
CustomersList.Add(new Customer() { ID = 1, Name = "TestCustomer1", Amt = 123 });
CustomersList.Add(new Customer() { ID = 2, Name = "TestCustomer2", Amt = 234 });
CustomersList.Add(new Customer() { ID = 3, Name = "TestCustomer3", Amt = 324 });
ViewBag.CustList = CustomersList;
return View(CustomersList);
}
}
}
我没有得到什么在View写的，我已经尝试了不同的code，但我越来越混乱...
I am not getting what to write in View, I have tried different code but I am getting confusing...
code在View：
Code in View:
@model CustomerDEMOForMultiselect.Models.Customer
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<title>DisplayCustomer</title>
</head>
<body>
<div>
@using (Html.BeginForm())
{
@Html.DropDownListFor(v => v.ID, new MultiSelectList(ViewBag.CustList,"ID","Name",ViewBag.ID))
<br />
<input type="submit" value="Submit" />
}
</div>
</body>
</html>
我要显示在查看客户名称列表，这样我就可以选择多个客户名称，并通过这些选定的客户ID的回控制器。
那怎么办？
I want to show the CustomerName list in View , so I can select multiple customer name and pass those selected customer ID's back to controller.
How to do that?
推荐答案
使用包装模型的属性来选择客户绑定工作（我试了一下）：
Using a wrapper model with a property to bind the selected customers to works (I tried it):
包装型号：
public class CustomerList
{
public List<Customer> Customers { get; set; }
public List<int> SelectedIDs { get; set; }
}
控制器：
[HttpGet]
public ActionResult DisplayCustomer()
{
Customer oCustomer = new Customer();
List<Customer> CustomersList = new List<Customer>();
CustomersList.Add(new Customer() { ID = 1, Name = "TestCustomer1", Amt = 123 });
CustomersList.Add(new Customer() { ID = 2, Name = "TestCustomer2", Amt = 234 });
CustomersList.Add(new Customer() { ID = 3, Name = "TestCustomer3", Amt = 324 });
ViewBag.CustList = CustomersList;
return View(new CustomerList() { Customers = CustomersList });
}
[HttpPost]
public void DisplayCustomer(List<int> selectedIds)
{
// do something with the id list
}
查看：
@model MvcApplication2.Models.CustomerList
@using (Html.BeginForm(@Model.SelectedIDs))
{
@Html.ListBoxFor(m => m.SelectedIDs, new MultiSelectList(@Model.Customers, "ID", "Name", @Model.SelectedIDs))
<input type="submit" value="save" />
}
您需要的东西，您的选择结合并发送回控制器。
You need something to bind your selection to and send it back to the controller.
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