如果你想在发布前验证这个,你可以使用javascript/jQuery。 在等形式添加onsubmit事件:
onsubmit = "return validateForm()"
并使用像一个javascript:
(未测试)
<script type="text/javascript">
function validateForm() {
var FirstSelected = document.getElementById('FirstSelected');
var SecondSelected = document.getElementById('SecondSelected');
var ThirdSelected = document.getElementById('ThirdSelected');
if (!FirstSelected.checked && !SecondSelected.checked && !ThirdSelected.checked) {
alert("Please choose one or more.");
return false;
}
}
</script>
如果你想从控制器,那么你会做做类似:
if (!yourmodel.FirstSelected && !yourmodel.SecondSelected && !yourmodel.ThirdSelected){
//do your stuff here and return to the view
ViewBag.ErrorMessage = "Please choose one or more.";
return View(yourmodel);
}
在视图中有地方展示
@ViewBag.ErrorMessage