asp.net-mvc – 如何在RegularExpression中忽略大小写?
发布时间:2020-12-30 22:21:39  所属栏目:asp.Net  来源:互联网 
            导读:我有一个asp.net MVC应用程序.有一个称为File的实体,它有一个名为Name的属性. using System.ComponentModel.DataAnnotations;public class File { ... [RegularExpression(@([^.]+[.](jpg|jpeg|gif|png|wpf|doc|docx|xls|xlsx ...
                
                
                
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                         我有一个asp.net MVC应用程序.有一个称为File的实体,它有一个名为Name的属性. using System.ComponentModel.DataAnnotations;
public class File    {
   ...
   [RegularExpression(@"([^.]+[.](jpg|jpeg|gif|png|wpf|doc|docx|xls|xlsx ...,ErrorMessage = "Invali File Name"]
   public string Name{ get; set; }
   ...
} 
 有一个RegularExpressionValidator检查文件扩展名. 解决方法我可以想到的一种方法是编写自定义验证属性:public class IgnorecaseRegularExpressionAttribute : RegularExpressionAttribute,IClientValidatable
{
    public IgnorecaseRegularExpressionAttribute(string pattern): base("(?i)" + pattern)
    { }
    public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata,ControllerContext context)
    {
        var rule = new ModelClientValidationRule
        {
            ValidationType = "icregex",ErrorMessage = ErrorMessage
        };
        // Remove the (?i) that we added in the pattern as this
        // is not necessary for the client validation
        rule.ValidationParameters.Add("pattern",Pattern.Substring(4));
        yield return rule;
    }
} 
 然后用它装饰你的模型: [IgnorecaseRegularExpression(@"([^.]+[.](jpg|jpeg|gif|png|wpf|doc|docx|xls|xlsx",ErrorMessage = "Invalid File Name"]
public string Name { get; set; } 
 最后在客户端上写一个适配器: <script src="@Url.Content("~/Scripts/jquery.validate.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.js")" type="text/javascript"></script>
<script type="text/javascript">
    jQuery.validator.unobtrusive.adapters.add('icregex',[ 'pattern' ],function (options) {
        options.rules['icregex'] = options.params;
        options.messages['icregex'] = options.message;
    });
    jQuery.validator.addMethod('icregex',function (value,element,params) {
        var match;
        if (this.optional(element)) {
            return true;
        }
        match = new RegExp(params.pattern,'i').exec(value);
        return (match && (match.index === 0) && (match[0].length === value.length));
    },'');
</script>
@using (Html.BeginForm())
{
    @Html.EditorFor(x => x.Name)
    @Html.ValidationMessageFor(x => x.Name)
    <input type="submit" value="OK" />
} 
 当然,您可以将客户端规则外部化为单独的JavaScript文件,以便您无需在任何地方重复. (编辑:莱芜站长网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容!  | 
                  
