如何使用 ASP.NET MVC 将选中的复选框作为控制器函数中的参数传递

Question

我正在创建一个网络程序，该程序根据用户通过选中/取消选中复选框选择的参数生成随机密码。我现在无法将用户的选择作为其中一个功能的参数传递给控制器。无论用户是否选中该框，我总是得到一个 false，看看我如何使用默认值为 false 的可选参数，以防用户没有选中所有框。

我已经设置了复选框的名称，并且在我调用的函数的参数中使用了这些名称。然而，无论用户是否选中复选框，这仍然让我误会

这是我的代码的 cshtml 部分

 @using (Html.BeginForm("PasswordGenerator", "Generator", FormMethod.Post))

        {

                <table class="TablePre">

                    <tr class="TableTop">

                        <th>Preferences</th>

                    </tr>

                    <tr >

                        <td class="Spacing">

                            <input type="checkbox" value="letters" name="letters" id="iletters"/>

                            <label for="letters">Letters</label>

                        </td >

                    </tr>

                    <tr >

                        <td class="Spacing">

                            <input type="checkbox" value="numbers" name="numbers" id="inumbers" />

                            <label for="numbers">Numbers</label>

                        </td>

                    </tr>

                    <tr >

                        <td class="Spacing">

                            <input type="checkbox" value="symbols" name="symbols" id="isymbols" />

                            <label for="symbols">Symbols</label>

                        </td>

                    </tr>

这是代码的 c# 部分

        public ActionResult PasswordGenerator(bool letters = false , bool numbers = false, bool symbols = false, bool words = false, bool creative = false, int PLChoice = 0)

        {

            return View("Index");

        }

最后一个例子：如果用户点击字母复选框，布尔字母将保持假而不是变为真。

我希望用户的选择被转移到控制器，但无论他们是否选中复选框，正在发生的事情都是错误的。这是网络程序的样子

Answer 1

更改value="true"所有复选框，例如&nbsp;<input type="checkbox" value="true" name="numbers" id="inumbers" />如下更新 tr<tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <td class="Spacing">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="checkbox" value="true" name="letters" id="iletters" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label for="letters">Letters</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td>&nbsp; &nbsp; &nbsp; &nbsp; </tr>&nbsp; &nbsp; &nbsp; &nbsp; <tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <td class="Spacing">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="checkbox" value="true" name="numbers" id="inumbers" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label for="numbers">Numbers</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td>&nbsp; &nbsp; &nbsp; &nbsp; </tr>&nbsp; &nbsp; &nbsp; &nbsp; <tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <td class="Spacing">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="checkbox" value="true" name="symbols" id="isymbols" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label for="symbols">Symbols</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td>&nbsp; &nbsp; &nbsp; &nbsp; </tr>&nbsp; &nbsp; &nbsp; &nbsp; <tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <td class="Spacing">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="checkbox" value="true" name="words" id="iwords" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label for="words">Words</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td>&nbsp; &nbsp; &nbsp; &nbsp; </tr>&nbsp; &nbsp; &nbsp; &nbsp; <tr>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <td class="Spacing">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <input type="checkbox" value="true" name="creative" id="icreative" />&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <label for="creative">Add my creative touch</label>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; </td>&nbsp; &nbsp; &nbsp; &nbsp; </tr>