ASP.NET核心复选框如何检查为真？

<form asp-action="SubmitForm" method="post">
    <input type="checkbox" name="AgreeToTerms" id="AgreeToTerms" />
    <label for="AgreeToTerms">我同意条款</label>
    <button type="submit">提交</button>
</form>

public class FormController : Controller
{
    [HttpGet]
    public IActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public IActionResult SubmitForm(bool agreeToTerms)
    {
        if (agreeToTerms)
        {
            // 复选框被选中
            // 执行相关操作
        }
        else
        {
            // 复选框未被选中
            // 可以添加错误处理逻辑
        }

        return View("Index");
    }
}

[HttpPost]
public IActionResult SubmitForm(bool agreeToTerms)
{
    if (!agreeToTerms)
    {
        ModelState.AddModelError("AgreeToTerms", "您必须同意条款才能继续。");
        return View("Index");
    }

    // 复选框被选中，继续处理表单提交
    return RedirectToAction("Success");
}

<form asp-action="SubmitForm" method="post">
    <input type="checkbox" name="AgreeToTerms" id="AgreeToTerms" />
    <label for="AgreeToTerms">我同意条款</label>
    <span asp-validation-for="AgreeToTerms"></span>
    <button type="submit">提交</button>
</form>