C# 验证未使用模型时是否选中复选框
在用户进入下一页之前,我需要选中一些复选框。显示验证消息的最佳方式是什么 视图: 控制器:C# 验证未使用模型时是否选中复选框,c#,asp.net-mvc-3,checkbox,validation,C#,Asp.net Mvc 3,Checkbox,Validation,在用户进入下一页之前,我需要选中一些复选框。显示验证消息的最佳方式是什么 视图: 控制器: [HttpPost] public ActionResult Review(ReviewModel model) { // Make sure all Terms & Conditions checkboxes are checked var termsEligibility = Request.Form.GetValues("terms_eligibility")[0];
[HttpPost]
public ActionResult Review(ReviewModel model)
{
// Make sure all Terms & Conditions checkboxes are checked
var termsEligibility = Request.Form.GetValues("terms_eligibility")[0];
var termsAccurate = Request.Form.GetValues("terms_accurate")[0];
var termsIdentityRelease = Request.Form.GetValues("terms_identity_release")[0];
var termsScoreRelease = Request.Form.GetValues("terms_score_release")[0];
if (termsEligibility == "true" && termsAccurate == "true" &&
termsIdentityRelease == "true" && termsScoreRelease == "true")
{
return RedirectToAction("CheckOut","Financial");
}
return null;
}
编辑 我做了建议的改变。现在,如何让同一页显示错误消息 我将模型中的属性更改为
[RequiredToBeTrue(ErrorMessage = "*")]
这是收银机
[HttpPost]
public ActionResult Review(ReviewModel model)
{
if(ModelState.IsValid)
{
return RedirectToAction("CheckOut", "Financial");
}
return RedirectToAction("Review");
}
我建议您使用视图模型和自定义验证属性:
public class RequiredToBeTrueAttribute : RequiredAttribute
{
public override bool IsValid(object value)
{
return value != null && (bool)value;
}
}
以及视图模型:
public class MyViewModel
{
[RequiredToBeTrue]
public bool TermsEligibility { get; set; }
[RequiredToBeTrue]
public bool TermsAccurate { get; set; }
[RequiredToBeTrue]
public bool TermsIdentityRelease { get; set; }
[RequiredToBeTrue]
public bool TermsScoreRelease { get; set; }
... some other properties that are used in your view
}
@model MyViewModel
@Html.ValidationSummary(false)
@using (Html.BeginForm())
{
@Html.CheckBoxFor(x => x.TermsEligibility)
@Html.CheckBoxFor(x => x.TermsAccurate)
@Html.CheckBoxFor(x => x.TermsIdentityRelease)
@Html.CheckBoxFor(x => x.TermsScoreRelease)
...
<button type="submit">OK</button>
}
当然,视图将被强类型化为视图模型:
public class MyViewModel
{
[RequiredToBeTrue]
public bool TermsEligibility { get; set; }
[RequiredToBeTrue]
public bool TermsAccurate { get; set; }
[RequiredToBeTrue]
public bool TermsIdentityRelease { get; set; }
[RequiredToBeTrue]
public bool TermsScoreRelease { get; set; }
... some other properties that are used in your view
}
@model MyViewModel
@Html.ValidationSummary(false)
@using (Html.BeginForm())
{
@Html.CheckBoxFor(x => x.TermsEligibility)
@Html.CheckBoxFor(x => x.TermsAccurate)
@Html.CheckBoxFor(x => x.TermsIdentityRelease)
@Html.CheckBoxFor(x => x.TermsScoreRelease)
...
<button type="submit">OK</button>
}
注意,
Request.Form.GetValues(“terms_合格性”)[0]
和termsEligibility==“true”
确实不是您希望在正确编写的应用程序中看到的那种代码。谢谢您的帮助。如果验证失败,如何显示错误消息。在我的示例中,@Html.ValidationSummary(false)
助手就是这样做的。但是,如果要对每个复选框执行此操作,还可以使用每个复选框旁边的ValidationMessageFor
helper。例如:@Html.ValidationMessageFor(x=>x.TermsEligibility)
。谢谢,我越来越近了。有两个问题1。当验证失败时,摘要确实会显示错误,但整个页面显示时没有任何CSS样式。所有文本都是黑白的。当它通过验证时,它会挂起在同一页面上的部分视图上,而它在该页面的原始GET上没有问题。抱歉#2是不正确的,当我注释掉paritals并且验证失败时,它会显示正确的验证,但没有样式。如果它通过了验证,就可以正常工作。