asp-validation-for 在获取 .net 核心上触发

Question

我有一个 .NET Core 应用程序，一旦从 get 返回页面，就会触发验证。我有一个视图模型，但我不确定为什么收到响应后就已经触发了验证。

这是我的模型和标记

    using System.ComponentModel.DataAnnotations;

    namespace MusicianProject.Models.ViewModels
    {
        public class RegisterViewModel
        {
            [Required(ErrorMessage ="First name is required.")]
            [Display(Name ="First Name")]
            [StringLength(25, ErrorMessage = "First name must be less than 25 characters.")]
            public string FirstName { get; set; }

            [Required(ErrorMessage = "Last name is required")]
            [Display(Name = "Last Name")]
            [StringLength(50, ErrorMessage = "Last name must be less than 50 characters.")]
            public string LastName { get; set; }

            [Required]
            [EmailAddress]
            [Display(Name = "Email")]
            public string Email { get; set; }

            [Required]
            [StringLength(100, ErrorMessage = "The {0} must be at least {2} and at max {1} characters long.", MinimumLength = 6)]
            [DataType(DataType.Password)]
            [Display(Name = "Password")]
            public string Password { get; set; }

            [Required]
            [DataType(DataType.Password)]
            [Display(Name = "Confirm password")]
            [Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]
            public string ConfirmPassword { get; set; }

        }
    }

这是返回的寄存器视图。

@model MusicianProject.Models.ViewModels.RegisterViewModel

<div class="container">
    <form asp-controller="Account" asp-action="Register" method="post">

        <div class="col-md-4 col-md-offset-4">

            <div class="form-group">
                <label asp-for="FirstName"></label>
                <input class="form-control" type="text" asp-for="FirstName" />
                <span asp-validation-for="FirstName">First name is required.</span>
            </div>


            <div class="form-group">
                <label asp-for="LastName"></label>
                <input class="form-control" asp-for="LastName" />
                <span asp-validation-for="LastName">Last name is required.</span>
            </div>

            <div class="form-group">
                <label asp-for="Email"></label>
                <input class="form-control" type="text" asp-for="Email" />
                <span asp-validation-for="Email">Email is required.</span>
            </div>

            <div class="form-group">
                <label asp-for="Password"></label>
                <input asp-for="Password" type="password" id="password" class="form-control" />
                <span asp-validation-for="Password">Password is required.</span>
            </div>

            <div class="form-group">
                <label asp-for="ConfirmPassword"></label>
                <input asp-for="ConfirmPassword" type="password" id="confirm-password" class="form-control" />
                <span asp-validation-for="ConfirmPassword">Confirm password is required</span>
            </div>


            <div class="btn-group text-center">
                <button class="btn btn-default">Sign up!</button>
                <button class="btn btn-danger">Cancel</button>
            </div>
        </div>

    </form>
</div>

我有两种注册方法，post 和 get。这是我所拥有的。

 [HttpGet]
        public IActionResult Register()
        {
            return View();
        }

        [HttpPost]
        [ValidateAntiForgeryToken]
        public IActionResult Register(RegisterViewModel rvm)
        {
            if (ModelState.IsValid)
            {

                return RedirectToAction("Index", "Home");
            }

            return View();
        }

当我在浏览器中导航到路线时，这就是我得到的。

Answer 1

只需删除视图中<span asp-validation-for> 标记内的所有文本。

标签助手会在出现验证错误时为您注入文本，具体取决于您的注释设置。您现在拥有它的方式会强制打印这些消息。