我创建了这个属性,它允许您指定 RegexOptions。编辑:它还与不引人注目的验证集成。客户端只会遵守 RegexOptions.Multiline 和 RegexOptions.IgnoreCase,因为这是 JavaScript 支持的。
[RegularExpressionWithOptions(@".+@example\.com", RegexOptions = RegexOptions.IgnoreCase)]
C#
public class RegularExpressionWithOptionsAttribute : RegularExpressionAttribute, IClientValidatable
{
public RegularExpressionWithOptionsAttribute(string pattern) : base(pattern) { }
public RegexOptions RegexOptions { get; set; }
public override bool IsValid(object value)
{
if (string.IsNullOrEmpty(value as string))
return true;
return Regex.IsMatch(value as string, "^" + Pattern + "$", RegexOptions);
}
public IEnumerable<System.Web.Mvc.ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
{
var rule = new ModelClientValidationRule
{
ErrorMessage = FormatErrorMessage(metadata.DisplayName),
ValidationType = "regexwithoptions"
};
rule.ValidationParameters["pattern"] = Pattern;
string flags = "";
if ((RegexOptions & RegexOptions.Multiline) == RegexOptions.Multiline)
flags += "m";
if ((RegexOptions & RegexOptions.IgnoreCase) == RegexOptions.IgnoreCase)
flags += "i";
rule.ValidationParameters["flags"] = flags;
yield return rule;
}
}
JavaScript
(function ($) {
$.validator.unobtrusive.adapters.add("regexwithoptions", ["pattern", "flags"], function (options) {
options.messages['regexwithoptions'] = options.message;
options.rules['regexwithoptions'] = options.params;
});
$.validator.addMethod("regexwithoptions", function (value, element, params) {
var match;
if (this.optional(element)) {
return true;
}
var reg = new RegExp(params.pattern, params.flags);
match = reg.exec(value);
return (match && (match.index === 0) && (match[0].length === value.length));
});
})(jQuery);
安东尼·史蒂文斯 (Anthony Stevens) 的这篇文章帮助我实现了这一目标:使用自定义验证器进行 ASP.NET MVC 3 不显眼的 Javascript 验证 http://thepursuitofalife.com/asp-net-mvc-3-unobtrusive-javascript-validation-with-custom-validators/