C# HTML帮助CheckBox不将数据传递给控制器

我一直试图将数据从表单传递给控制器，但它给了我空值。我的模型/控制器和视图如下所示。我甚至尝试使用表单集合，但为什么不能正确绑定数据

Role.cs

Create.cshtml

@model xxxxx.Models.Role
@{
ViewBag.Title=“创建”；
Layout=“~/Views/Shared/_Layout.cshtml”；
}
创造
@*@使用（Html.BeginForm（））*@
@Html.AntiForgeryToken（）
@LabelFor（model=>model.Employee.FirstName，“选择雇员”，htmlAttributes:new{@class=“control label col-md-2”}）
@DropDownList（“EnrollNumber”，null，“-Select Employee-”，htmlAttributes:new{id=“ddEnrollNumber”，@class=“form control”}）
@Html.ValidationMessageFor（model=>model.Employee.FirstName，“，new{@class=“text danger”}）
@LabelFor（model=>model.Accounts，htmlAttributes:new{@class=“controllabel col-md-2”}）
@CheckBoxFor（model=>model.Accounts.Value，新的{name=“accountsCheck”、@class=“accountsCheck”、@checked=“checked”}）
@Html.ValidationMessageFor（model=>model.Accounts，“，new{@class=“text danger”}）
@LabelFor（model=>model.Bounds_电子邮件，htmlAttributes:new{@class=“controllabel col-md-2”}）
@CheckBoxFor（model=>model.Bounds_Email.Value，新的{@class=“boundsCheck”，@checked=“checked”}）
@Html.ValidationMessageFor（model=>model.Bounds_Email，“，new{@class=“text danger”}）
@LabelFor（model=>model.Card_接受，htmlAttributes:new{@class=“controllabel col-md-2”}）
@CheckBoxFor（model=>model.Card_Acceptance.Value，新的{@class=“cardCheck”，@checked=“checked”}）
@Html.ValidationMessageFor（model=>model.Card_Acceptance，“，new{@class=“text danger”}）
@LabelFor（model=>model.Door_Unlock，htmlAttributes:new{@class=“control label col-md-2”}）
@CheckBoxFor（model=>model.Door_Unlock.Value，新的{@class=“doorUnlockCheck”，@checked=“checked”}）
@Html.ValidationMessageFor（model=>model.Door_Unlock，“，new{@class=“text danger”}）
@LabelFor（model=>model.Salary_特权，htmlAttributes:new{@class=“controllabel col-md-2”}）
@CheckBoxFor（model=>model.Salary_Privilege.Value，新的{@class=“salaryCheck”，@checked=“checked”}）
@Html.ValidationMessageFor（model=>model.Salary_Privilege，“，new{@class=“text danger”}）
@LabelFor（model=>model.IsAdmin，htmlAttributes:new{@class=“controllabel col-md-2”}）
@CheckBoxFor（model=>model.IsAdmin.Value，新的{@class=“IsAdmin检查”，@checked=“checked”}）
@Html.ValidationMessageFor（model=>model.IsAdmin，“，new{@class=“text danger”}）
@ActionLink（“返回列表”，“索引”，空，新的{@style=“color:#FFFFFF；”}）
返回视图（）；
}

---

我甚至尝试使用Request.Form[]方法，但我无法理解为什么这不能正确绑定数据并传递给控制器<控制器参数中的代码>角色始终为空。

在ASP.Net中工作可能会令人困惑，原因很简单：

无论它看起来有多像桌面应用程序，它仍然是1980年的HTML WebFormular。所有的旧规则和设计决策仍然存在

评论者试图告诉你这样的事情：

如果将BackgroundClass到HTML的创建/映射保留为某种自动操作，则不能使用可空布尔值。HTML复选框没有三态支持。它来自一个时代，当时3个州的支持还不是一件事。这是一个简单的旧2状态复选框。它与老年人共享这一财产

如果有3+个状态，则最接近的HTML映射是下拉列表。因此，要么：

• 停止使用可为空的布尔
• 停止尝试使用复选框

---

如上所述，您不能在

bool？

上使用

CheckBoxFor（）

，我建议您将模型类更改为

public partial class Role
{
    public int Role_Id { get; set; }
    public int EmpID { get; set; }
    public bool Door_Unlock { get; set; }
    public bool Accounts { get; set; }
    public bool Bounds_Email { get; set; }
    public bool Salary_Privilege { get; set; }
    public bool Card_Acceptance { get; set; }
    public bool IsAdmin { get; set; }

    public virtual Employee Employee { get; set; }
}

你的控制器保持不变

[HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "EmpID,Door_Unlock,Accounts,Bounds_Email,Salary_Privilege,Card_Acceptance,IsAdmin")] Role roles)
        {
 if (ModelState.IsValid)
                {

                    //db.Roles.Add(roles);
                   // db.SaveChanges();
                    return RedirectToAction("Index");
                }

和Create.cshtml

@model granjurEPS.Models.Role

@{
    ViewBag.Title = "User Role";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>New User Role</h2>
@*@using (Html.BeginForm())*@
<form method="POST">


    @Html.AntiForgeryToken()
<div class="form-horizontal">
    <div class="form-group">
        @Html.LabelFor(model => model.Employee.FirstName, "Select Employee", htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownList("EnrollNumber", null, "-Select Employee-", htmlAttributes: new { id = "ddEnrollNumber", @class = "form-control" })


            @Html.ValidationMessageFor(model => model.Employee.FirstName, "", new { @class = "text-danger" })

        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Accounts, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor( model => model.Accounts, new { name = "accountsCheck", @class = "accountsCheck" })
            @*@Html.EditorFor(model => model.Accounts.Value)*@

            @Html.ValidationMessageFor(model => model.Accounts, "", new { @class = "text-danger" })

        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Bounds_Email, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Bounds_Email, new { @class = "boundsCheck" })
            @Html.ValidationMessageFor(model => model.Bounds_Email, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        @Html.LabelFor(model => model.Card_Acceptance, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Card_Acceptance, new { @class = "cardCheck" })
            @Html.ValidationMessageFor(model => model.Card_Acceptance, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        @Html.LabelFor(model => model.Door_Unlock, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Door_Unlock, new { @class = "doorUnlockCheck" })
            @Html.ValidationMessageFor(model => model.Door_Unlock, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Salary_Privilege, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Salary_Privilege, new { @class = "salaryCheck" })
            @Html.ValidationMessageFor(model => model.Salary_Privilege, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        @Html.LabelFor(model => model.IsAdmin, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.IsAdmin, new { @class = "isAdminCheck" })
            @Html.ValidationMessageFor(model => model.IsAdmin, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <input type="submit" value="Grant Permissions" class="btn green" />
        </div>
    </div>
    </div>
</form>


<div>
    <button type="button" class="btn green">  @Html.ActionLink("Back to List", "Index", null, new { @style = "color:#FFFFFF;" }) <span class=""></span></button>

</div>

@model granjurEPS.Models.Role
@{
ViewBag.Title=“用户角色”；
Layout=“~/Views/Shared/_Layout.cshtml”；
}
新用户角色
@*@使用（Html.BeginForm（））*@
@Html.AntiForgeryToken（）
@LabelFor（model=>model.Employee.FirstName，“选择雇员”，htmlAttributes:new{@class=“control label col-md-2”}）
@DropDownList（“EnrollNumber”，null，“-Select Employee-”，htmlAttributes:new{id=“ddEnrollNumber”，@class=“form control”}）
@Html.ValidationMessageFor（model=>model.Employee.FirstName，“，new{@class=“text danger”}）
@LabelFor（model=>model.Accounts，htmlAttributes:new{@class=“controllabel col-md-2”}）
@CheckBoxFor（model=>model.Accounts，新的{name=“accountsCheck”，@class=“accountsCheck”}）
@*@EditorFor（model=>model.Accounts.Value）*@
@Html.ValidationMessageFor（model=>model.Accounts，“，new{@class=“text danger”}）
@LabelFor（model=>model.Bounds_电子邮件，htmlAttributes:new{@class=“controllabel col-md-2”}）
@CheckBoxFor（model=>model.Bounds_电子邮件，新的{@class=“boundsCheck”}）
@Html.ValidationMessageFor（model=>model.Bounds_Email，“，new{@class=“text danger”}）
@LabelFor（model=>model.Card_，htmlAttributes:new{@class=“control lab
public partial class Role
{
    public int Role_Id { get; set; }
    public int EmpID { get; set; }
    public bool Door_Unlock { get; set; }
    public bool Accounts { get; set; }
    public bool Bounds_Email { get; set; }
    public bool Salary_Privilege { get; set; }
    public bool Card_Acceptance { get; set; }
    public bool IsAdmin { get; set; }

    public virtual Employee Employee { get; set; }
}

[HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "EmpID,Door_Unlock,Accounts,Bounds_Email,Salary_Privilege,Card_Acceptance,IsAdmin")] Role roles)
        {
 if (ModelState.IsValid)
                {

                    //db.Roles.Add(roles);
                   // db.SaveChanges();
                    return RedirectToAction("Index");
                }

@model granjurEPS.Models.Role

@{
    ViewBag.Title = "User Role";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>New User Role</h2>
@*@using (Html.BeginForm())*@
<form method="POST">


    @Html.AntiForgeryToken()
<div class="form-horizontal">
    <div class="form-group">
        @Html.LabelFor(model => model.Employee.FirstName, "Select Employee", htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownList("EnrollNumber", null, "-Select Employee-", htmlAttributes: new { id = "ddEnrollNumber", @class = "form-control" })


            @Html.ValidationMessageFor(model => model.Employee.FirstName, "", new { @class = "text-danger" })

        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Accounts, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor( model => model.Accounts, new { name = "accountsCheck", @class = "accountsCheck" })
            @*@Html.EditorFor(model => model.Accounts.Value)*@

            @Html.ValidationMessageFor(model => model.Accounts, "", new { @class = "text-danger" })

        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Bounds_Email, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Bounds_Email, new { @class = "boundsCheck" })
            @Html.ValidationMessageFor(model => model.Bounds_Email, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        @Html.LabelFor(model => model.Card_Acceptance, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Card_Acceptance, new { @class = "cardCheck" })
            @Html.ValidationMessageFor(model => model.Card_Acceptance, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        @Html.LabelFor(model => model.Door_Unlock, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Door_Unlock, new { @class = "doorUnlockCheck" })
            @Html.ValidationMessageFor(model => model.Door_Unlock, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.Salary_Privilege, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.Salary_Privilege, new { @class = "salaryCheck" })
            @Html.ValidationMessageFor(model => model.Salary_Privilege, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        @Html.LabelFor(model => model.IsAdmin, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.CheckBoxFor(model => model.IsAdmin, new { @class = "isAdminCheck" })
            @Html.ValidationMessageFor(model => model.IsAdmin, "", new { @class = "text-danger" })
        </div>
    </div>
    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <input type="submit" value="Grant Permissions" class="btn green" />
        </div>
    </div>
    </div>
</form>


<div>
    <button type="button" class="btn green">  @Html.ActionLink("Back to List", "Index", null, new { @style = "color:#FFFFFF;" }) <span class=""></span></button>

</div>