MVC 5 RadioButton为枚举,是否始终选择默认的枚举值零？

Question

说我有一个枚举:

public enum OrderStatusType
{
    Waiting = 0,
    Pending,
    Picked,
    Shipped,        
}

我按如下方式生成单选按钮列表.

@Html.RadioButtonFor(m => m.Status, OrderStatusType.Shipped, new {@checked = true})
@Html.RadioButtonFor(m => m.Status, OrderStatusType.Waiting)

但等待总是被选中.输出HTML如下:

input type="radio" value="Shipped" name="Status" id="Status" checked="True"
input type="radio" value="Waiting" name="Status" id="Status" checked="checked"

为什么MVC框架会自动添加"已检查"属性？谢谢.

该模型:

public class OrderViewModel
{
    public OrderStatusType Status { get; set; }
}

风景:

@using WebApplication17.Controllers
@model WebApplication17.Models.OrderViewModel

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


@Html.RadioButtonFor(m => m.Status, OrderStatusType.Picked)
<span>@OrderStatusType.Picked</span>

@Html.RadioButtonFor(m=>m.Status, OrderStatusType.Pending)
<span>@OrderStatusType.Pending</span>

@Html.RadioButtonFor(m => m.Status, OrderStatusType.Shipped, new {@checked = true})
<span>@OrderStatusType.Shipped</span>

@Html.RadioButtonFor(m => m.Status, OrderStatusType.Waiting)
<span>@OrderStatusType.Waiting</span>

Answer 1

选择它是因为你的属性的价值Status是OrderStausType.Waiting(这就是绑定的工作原理!).

删除new {@checked = true}从@Html.RadioButtonFor()方法和控制器,设置的值Status,以OrderStausType.Shipped将它传递到视图前.

另请注意,您应该使用<label>元素而不是a <span>来将标签与单选按钮相关联

@Html.RadioButtonFor(m => m.Status, OrderStausType.Picked, new {id = OrderStausType.Picked)
<label for=@OrderStausType.Picked>@OrderStausType.Picked</label>