ASP.NET MVC 复选框始终为 false

Question

I made an asp.net website, but the checkbox is always false. Why is this so?

Model:

 public string Username { get; set; }
 public string Password { get; set; }
 public bool Remember { get; set; }

CSHTML:

<div class="form-group">
    @Html.Label("Remember me?")
    @Html.CheckBoxFor(m => m.Remember)
 </div>

The Remember property is always false, if the checkbox is checked then Remember is still false.

Answer 1

我遇到了同样的问题，我通过编写 html checkbox 标签来修复它，给它命名与属性名称相同的名称，并且 value = true，如果未选中复选框，则无需担心，因为无论如何它都不会提交，在您的情况就是这样

<input type="checkbox" name="Remember" value="true" />

Answer 2

With Razor, I had the same problem. What worked for me was taking off the value="xxx" tag. Then it functioned normally.

Does not work:

 <input class="form-check-input" value="true" asp-for="Answer.aIsCorrect" />

Works:

 <input class="form-check-input" asp-for="Answer.aIsCorrect" />

Answer 3

The first parameter is not checkbox value but rather view model binding for the checkbox hence:

@Html.CheckBoxFor(m => m.SomeBooleanProperty, new { @checked = "checked" }); The first parameter must identify a boolean property within your model (it's an Expression not an anonymous method returning a value) and second property defines any additional HTML element attributes. I'm not 100% sure that the above attribute will initially check your checkbox, but you can try. But beware. Even though it may work you may have issues later on, when loading a valid model data and that particular property is set to false.

Source and additional info: https://stackoverflow.com/a/12674731/3397630

Hope it will helpful for you ,kindly let me know your thoughts or feedbacks

Thanks Karthik