asp.net-mvc-3 – 如何在页面提交ASP.Net MVC时捕获哪个单选按钮

发布时间：2020-12-15 19:46:21 所属栏目：asp.Net 来源：网络整理

导读：这是我的代码,显示我的模型中的两个单选按钮.主要的问题是,当我提交表单时,模型性属性变为null,因为我在表单提交之前选择了一个单选按钮.请帮我找出问题所在. 模特课 public class StudentModel { [Required(ErrorMessage = "First Name Required")] // text

这是我的代码,显示我的模型中的两个单选按钮.主要的问题是,当我提交表单时,模型性属性变为null,因为我在表单提交之前选择了一个单选按钮.请帮我找出问题所在.

模特课

public class StudentModel
    {

        [Required(ErrorMessage = "First Name Required")] // textboxes will show
        [Display(Name = "First Name :")]
        [StringLength(5,ErrorMessage = "First Name cannot be longer than 5 characters.")]
        public string FirstName { get; set; }

        [Required(ErrorMessage = "Last Name Required")] // textboxes will show
        [Display(Name = "Last Name :")]
        [StringLength(5,ErrorMessage = "Last Name cannot be longer than 5 characters.")]
        public string LastName { get; set; }

        [Required(ErrorMessage = "Sex Required")]
        [Display(Name = "Sex :")]
        public int SexID { get; set; }

        public List<Sex> Sex { get; set; }

    }

    public class Sex
    {
        public string ID { get; set; }
        public string Type { get; set; }
    }

控制器类

public class HomeController : Controller
    {
        [HttpGet]
        public ActionResult Index()
        {
            ViewBag.Message = "Welcome to ASP.NET MVC!";
            var student = new StudentModel
            {
                FirstName = "Rion",LastName = "Gomes",//I think the best way to populate this list is to call a service here.
                Sex = new List<Sex>
                {
                    new Sex{ID="1",Type = "Male"},new Sex{ID="2",Type = "Female"}
                }
            };

            return View(student );
        }

        [HttpPost]
        public ActionResult Index(StudentModel model)
        {
            if (ModelState.IsValid)
            {
                //TODO: Save your model and redirect 
            }

            //Call the same service to initialize your model again (cause we didn't post the list of sexs)
            return View(model);
        }
}

查看代码

@model MvcRadioButton.Models.StudentModel

@Html.BeginForm()
{
    <div>
        @Html.LabelFor(model => model.FirstName)
        @Html.EditorFor(model => model.FirstName)
        @Html.ValidationMessageFor(model => model.FirstName)
    </div>
    <div>
        @Html.LabelFor(model => model.LastName)
        @Html.EditorFor(model => model.LastName)
        @Html.ValidationMessageFor(model => model.LastName)
    </div>
    @{ 
        foreach (var sex in Model.Sex)
        {
            <div>
                @Html.RadioButtonFor(model => model.Sex,new { id = "sex" + sex.ID })
                @Html.Label("sex" + sex.ID,sex.Type)
            </div>
        }
    }

    <input type="submit" value="Submit" />
}

如果可能请运行我的代码并告诉我如何实现我的目标,如果有人认为这种情况可以更好地处理只需更改代码然后请告诉我,因为我是MVC的新手.

解决方法

视图模型

public class StudentModel
    {
        //properties
        public bool Sex { get; set; }
    }

视图

@using (Html.BeginForm())
{
    @Html.RadioButtonFor(model => model.Sex,"false",new { id = "male" }) 
    @Html.Label("male","Male")

    @Html.RadioButtonFor(model => model.Sex,"true",new { id = "female" })
    @Html.Label("female","Female")
    <button type="submit">OK</button>
}

调节器

[HttpPost]
    public ActionResult Index(StudentModel model)
    {
        //you can modify "model" however you want here
        return Content("Sex: " + model.Sex);
    }

（编辑：李大同）

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