Question

我正在尝试使用自定义验证，但它已被忽略。我没有任何错误或任何错误。它什么都不做。我究竟做错了什么？谢谢你的阅读。

---的 ModelMetadata.cs ----

using System.ComponentModel.DataAnnotations; 
using myproject.Common;

namespace myproject.Models
{
    [MetadataType(typeof(ModelMetaData))]
    public partial class Reference
    { 
    }

    public class ModelMetaData { 
        [Required]
        [Display(Name = "Full Name *")]
        [ExcludeCharacters("/.,!@#$%")] // <<<====== This is being ignored. 
        public string Name { get; set; } 
    }
}

- Create.cshtml ----

<script src="~/Scripts/jquery-1.8.2.min.js"></script>
<script src="~/Scripts/jquery.validate.js"></script> 
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

@using (Html.BeginForm()){
@Html.AntiForgeryToken()
@Html.ValidationSummary(true) 

    <div class="editor-field">
        @Html.EditorFor(model => model.Name) // <<<====== field 
        @Html.ValidationMessageFor(model => model.Name)
    </div>

- ExcludeCharacters.cs ---

namespace myproject.Common
{
    public class ExcludeCharacters : ValidationAttribute 
    {
        private readonly string _chars;

        public ExcludeCharacters(string chars) : base("{0} contains invalid characters")
        {
            _chars = chars;
        }

        protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            if (value != null)
            {
                for (int i = 0; i < _chars.Length; i++)
                {
                    var valueAsString = value.ToString();
                    if (valueAsString.Contains(_chars[i].ToString()))
                    {
                        var errorMessage = FormatErrorMessage(validationContext.DisplayName);
                        return new ValidationResult(errorMessage);
                    }
                }
            }
            return ValidationResult.Success;  
        }  
    } 
}

Answer 1

请检查控制器中的操作方法 - 确保参数使用模型类型，例如

public ActionResult Foo(ModelMetaData model)

Answer 2

我有完全相同的问题，并且也使用相同的代码。我只是关闭我的应用程序并重新启动。它对我有用。试试这个

Answer 3

您的代码通常看起来是正确的。但是，这将在服务器端验证您通常拥有它的方式以及它是否正常工作。此外，我不确定为什么某些示例仅覆盖 IsValid 方法的 ValidationResult 版本，而其他示例仅覆盖 bool < / strong> variant。

如果您需要客户端验证，则需要实现IClientValidatable，并在客户端注册适配器。

以下是我能够开展工作的一些代码。我需要在验证包含后包含我的js文件，因为我使用包含客户端库的DevExpress，我也需要在它们之后运行它。

您也（为了客户端工作），想要使用EditorFor或TextBoxFor类型方法来添加字段，但这似乎是您已经在做的事情。但是，请检查您的HTML并查找所添加的验证属性。

我已经用我的MM / dd / yyyy字段对此进行了测试。

<强> RangeSmallDateTime.cs：

using System; using System.Collections.Generic; using System.ComponentModel.DataAnnotations; using System.Linq; using System.Web; using System.Web.Mvc; namespace YourNamespaceHere.Filters { public class RangeSmallDateTime : ValidationAttribute, IClientValidatable { private static DateTime _minValue = new DateTime(1900, 1, 1); private static DateTime _maxValue = new DateTime(2079, 6, 6); public override bool IsValid(object value) { DateTime? dateValue = value as DateTime?; if (!dateValue.HasValue) { return true; } else { return (dateValue.Value >= _minValue && dateValue.Value <= _maxValue); } } public override string FormatErrorMessage(string name) { return string.Format("The '{0}' field has an invalid value.", name); } public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context) { ModelClientValidationRule rule = new ModelClientValidationRule(); rule.ErrorMessage = FormatErrorMessage(metadata.GetDisplayName()); rule.ValidationType = "rangesdt"; yield return rule; } } }

<强> SmallDateTimeValidator.js：

$.validator.unobtrusive.adapters.addBool("rangesdt"); $.validator.addMethod("rangesdt", function (value, element) { if (value == null) { return true; } var date = new Date(value); // MM/dd/yyyy var minDate = new Date(1900,1,1); var maxDate = new Date(2079, 6, 6); if (!dates.inRange(date, minDate, maxDate)) return false; return true; }); // Source: http://stackoverflow.com/questions/497790 var dates = { convert: function (d) { // Converts the date in d to a date-object. The input can be: // a date object: returned without modification // an array : Interpreted as [year,month,day]. NOTE: month is 0-11. // a number : Interpreted as number of milliseconds // since 1 Jan 1970 (a timestamp) // a string : Any format supported by the javascript engine, like // "YYYY/MM/DD", "MM/DD/YYYY", "Jan 31 2009" etc. // an object : Interpreted as an object with year, month and date // attributes. **NOTE** month is 0-11. return ( d.constructor === Date ? d : d.constructor === Array ? new Date(d[0], d[1], d[2]) : d.constructor === Number ? new Date(d) : d.constructor === String ? new Date(d) : typeof d === "object" ? new Date(d.year, d.month, d.date) : NaN ); }, compare: function (a, b) { // Compare two dates (could be of any type supported by the convert // function above) and returns: // -1 : if a < b // 0 : if a = b // 1 : if a > b // NaN : if a or b is an illegal date // NOTE: The code inside isFinite does an assignment (=). return ( isFinite(a = this.convert(a).valueOf()) && isFinite(b = this.convert(b).valueOf()) ? (a > b) - (a < b) : NaN ); }, inRange: function (d, start, end) { // Checks if date in d is between dates in start and end. // Returns a boolean or NaN: // true : if d is between start and end (inclusive) // false : if d is before start or after end // NaN : if one or more of the dates is illegal. // NOTE: The code inside isFinite does an assignment (=). return ( isFinite(d = this.convert(d).valueOf()) && isFinite(start = this.convert(start).valueOf()) && isFinite(end = this.convert(end).valueOf()) ? start <= d && d <= end : NaN ); } }

ASP.NET MVC 4自定义验证无效

3 个答案: