你可以写一个helper来防止添加隐藏输入:

using System.Web.Mvc;
using System.Web.Mvc.Html;

public static class HelperUI
{
    public static MvcHtmlString CheckBoxSimple(this HtmlHelper htmlHelper, string name, object htmlAttributes)
    {
        string checkBoxWithHidden = htmlHelper.CheckBox(name, htmlAttributes).ToHtmlString().Trim();
        string pureCheckBox = checkBoxWithHidden.Substring(0, checkBoxWithHidden.IndexOf("<input", 1));
        return new MvcHtmlString(pureCheckBox);
    }
}

使用它:

@Html.CheckBoxSimple("foo", new {value = bar.Id})

这是Alexander Trofimov解决方案的强类型版本:

using System.Web.Mvc;
using System.Web.Mvc.Html;

public static class HelperUI
{
    public static MvcHtmlString CheckBoxSimpleFor<TModel>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, bool>> expression, object htmlAttributes)
    {
        string checkBoxWithHidden = htmlHelper.CheckBoxFor(expression, htmlAttributes).ToHtmlString().Trim();
        string pureCheckBox = checkBoxWithHidden.Substring(0, checkBoxWithHidden.IndexOf("<input", 1));
        return new MvcHtmlString(pureCheckBox);
    }
}

从ASP开始。NET (Core) 5，添加到你的启动:

services.Configure<MvcViewOptions>(options =>
{
    // Disable hidden checkboxes
    options.HtmlHelperOptions.CheckBoxHiddenInputRenderMode = CheckBoxHiddenInputRenderMode.None;
});

以你的观点为例:

<input class="form-check-input" asp-for="@Model.YourBool" />

此属性的附加隐藏字段不再在表单中创建:

<input class="form-check-input" type="checkbox" data-val="true" data-val-required="The YourBool field is required." id="YourBool" name="YourBool" value="true" />

来源:https://github.com/dotnet/aspnetcore/pull/13014 # issuecomment - 674449674

使用Contains，它将与两个可能的post值一起工作:"false"或"true,false"。

bool isChecked = Request.Form["foo"].Contains("true");

当我使用WebGrid时，我发现这确实引起了问题。WebGrid上的排序链接将由加倍的查询字符串或x=true&x=false转换为x=true,false，并在复选框中导致解析错误。

我最终使用jQuery在客户端删除隐藏字段:

    <script type="text/javascript">
    $(function () {
        // delete extra hidden fields created by checkboxes as the grid links mess this up by doubling the querystring parameters
        $("input[type='hidden'][name='x']").remove();
    });
    </script>

在2020/11和。net 5预览版中，有一个拉请求应该使这种行为可控。谢谢大家!

不管怎样，如果有人觉得它有用，.NET Core 3.0的Alexander Trofimov的回答:

public static IHtmlContent CheckBoxSimple(this IHtmlHelper htmlHelper, string name)
{
    TextWriter writer = new StringWriter();

    IHtmlContent html = htmlHelper.CheckBox(name);
    html.WriteTo(writer, HtmlEncoder.Default);

    string checkBoxWithHidden = writer.ToString();

    string pureCheckBox = checkBoxWithHidden.Substring(0, checkBoxWithHidden.IndexOf("<input", 1));
    return new HtmlString(pureCheckBox);
}