ajax 调用 asp.net MVC 时模型出现验证错误

Question

我如何在 ajax 调用上显示验证错误，因为它在 ajax 上未显示错误 call.I 已附上我的代码，请检查它并告诉我我在哪里 wrong.i 我没有使用强模型绑定。没有 ajax 调用它显示模型错误，但我想通过 ajax 调用显示模型错误。

型号

public class Feedback
{
    [Required(ErrorMessage = "Comment field is required")]
    [Display(Name = "Comment")]
    [MaxLength(1000, ErrorMessage = "Comment Cannot Be Longer Than 1000 Characters")]
    public string CommentText { get; set; }

    [Required(ErrorMessage = "Nme field is required")]
    [MaxLength(100, ErrorMessage = "Name Cannot Be Longer Than 100 Characters")]

    public string Name { get; set; }

    [Required(ErrorMessage = "Email field is required")]
    [MaxLength(150, ErrorMessage = "Email cannot be longer than 150 characters")]
    [RegularExpression(@"^[a-zA-Z-._0-9]+@[a-zA-Z]+\.[A-Za-z]+$", ErrorMessage = "Invalid Email Address")]
    public string Email { get; set; }

}

控制器

public ActionResult feedbackAndReview(Feedback feed)
{
    if(ModelState.IsValid)
    {
        //add to database

    }
    return View();
}

查看

<div class="row">
    <div class="col-md-6">
        <textarea class="form-control" id="CommentText" style="margin-bottom:10px;max-width:100%; height:139px;" placeholder="Your thoughts"></textarea>
    </div>
    <div class="col-md-6">
        <div class="row">
            <div class="col-md-12">
                <div class="form-group">
                    <input type="text" class="form-control" placeholder="Your Name" id="Name" />
                </div>
            </div>
            <div class="col-md-12">
                <div class="form-group">
                    <input type="email" placeholder="Enter Valid Email Address" class="form-control" id="Email" />
                </div>
            </div>
            <button type="button" onclick="submitReviewForm()" class="reviewBtn">POST REVIEW</button>
        </div>
    </div>
</div>

Ajax代码

function submitReviewForm()
{
    var comment = $("#CommentText").val();
    var name = $("#Name").val();
    var email = $("#Email").val();

    $.ajax({
        type: 'post',
        url: '/Account/feedbackAndReview',
        data: {'CommentText' : comment , 'Name' : name , 'Email' : email },
        success : function (data)
        {

        }

    })
}

Answer 1

使用表单和绑定模型让事情变得更简单！

@model Feedback
<head
 <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>
</head>
<form id="myform" method="post">
   <div class="row">
<div class="col-md-6">
    <textarea class="form-control" id="CommentText" style="margin-bottom:10px;max-width:100%; height:139px;" placeholder="Your thoughts"></textarea>
</div>
<div class="col-md-6">
    <div class="row">
        <div class="col-md-12">
            <div class="form-group">
                <input type="text" class="form-control" placeholder="Your Name" id="Name" />
            </div>
        </div>
        <div class="col-md-12">
            <div class="form-group">
                <input type="email" placeholder="Enter Valid Email Address" class="form-control" id="Email" />
            </div>
        </div>
        <input type="submit" value="Submit" id="btnSubmit" class="reviewBtn">POST REVIEW</button>
    </div>
    </div>
  </div>
  </form>


$('#myform').on('submit', function (e) {

    e.preventDefault();

   var ok = $(this).valid();

  if (ok) {

      var comment = $("#CommentText").val();
      var name = $("#Name").val();
      var email = $("#Email").val();

      $.ajax({
         type: 'post',
         url: '/Account/feedbackAndReview',
         data: {'CommentText' : comment , 'Name' : name , 'Email' : email },
         success : function (data)
         {
         }
     })
   }
}

ajax 调用 asp.net MVC 时模型出现验证错误

Validation error from model on ajax call asp.net MVC

c#

asp.net-mvc

asp.net-ajax