展开using System;
using System.ComponentModel.DataAnnotations;
using System.Web.Mvc;namespace MvcValidation.Extension
{public class DayRangeAttribute : ValidationAttribute, IClientValidatable{private int _minDay;private int _maxDay;public DayRangeAttribute(int minDay, int maxDay){if (minDay.CompareTo(maxDay) > -1){throw new Exception("最小日期不能大于或等于最大日期");}this._minDay = minDay;this._maxDay = maxDay;}public override bool IsValid(object value){if (value == null)return true;var compareDate = value as DateTime?;if (compareDate.HasValue){compareDate = compareDate.Value.Date;return compareDate.Value >= DateTime.Today.AddDays(_minDay).Date &&compareDate.Value <= DateTime.Today.AddDays(_maxDay).Date;}return false;}public System.Collections.Generic.IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context){var rule = new ModelClientValidationRule{ValidationType = "dayrange", //这里的dayrange最终会成为data-val-dayrange属性被jquery侦测到ErrorMessage = FormatErrorMessage(metadata.GetDisplayName())};//这里了的min和max将会作为jquery验证扩展方法的参数rule.ValidationParameters["min"] = _minDay;rule.ValidationParameters["max"] = _maxDay;yield return rule;}}
}

展开 public class RegisterModel{[Required][StringLength(6, MinimumLength = 2)] //加[Display(Name = "用户名")]//[Remote("CheckUserName","Validate", ErrorMessage = "远程验证用户名失败")][NoInput("demo,jack",ErrorMessage = "不能使用此名称")]public string UserName { get; set; }[Required][DataType(DataType.EmailAddress)][Display(Name = "邮件")]//[Email]public string Email { get; set; }[DayRange(0, 7)][Display(Name = "上课时间")]public DateTime ClassDate { get; set; }[Required][StringLength(100, ErrorMessage = "{0}栏位最少{2}个字，最多{1}个字", MinimumLength = 6)][DataType(DataType.Password)][Display(Name = "密码")]public string Password { get; set; }[DataType(DataType.Password)][Display(Name = "确认密码")][System.ComponentModel.DataAnnotations.Compare("Password", ErrorMessage = "密码和确认密码不匹配。")]public string ConfirmPassword { get; set; }

//扩展jquery验证方法

//第一个参数是前端输入的值

//第二个参数是html元素

//第三个参数是自定义验证特性DayRangeArribute中rule.ValidationParameters["min"]和rule.ValidationParameters["max"]的键值

jQuery.validator.addMethod('dayrange', function(value, element, param) {

    if (!value) {

        return false;

    }

    //value:1999/1/1

    var valueDateParts = value.split('-');

    var minDate = new Date();

    var maxDate = new Date();

    var now = new Date();

    var dateValue = new Date(valueDateParts[2],

                        (valueDateParts[1] - 1),

                         valueDateParts[0],

                         now.getHours(),

                         now.getMinutes(),

                         (now.getSeconds() + 5));

    minDate.setDate(minDate.getDate() - parseInt(param.min));

    maxDate.setDate(maxDate.getDate() + parseInt(param.max));

    return dateValue >= minDate && dateValue <= maxDate;

});

//第一个参数是jquery验证扩展方法名

//第二和第三个参数分别是最小或最大值

//第三个参数为DayRangeAttribute中ValidationType对应的值

jQuery.validator.unobtrusive.adapters.addMinMax('dayrange', 'min', 'max', 'dayrange');

展开@model MvcValidation.Models.RegisterModel
@{ViewBag.Title = "注册";
}<hgroup class="title"><h1>@ViewBag.Title.</h1><h2>创建新帐户。</h2>
</hgroup>@using (Html.BeginForm()) {@Html.AntiForgeryToken()@Html.ValidationSummary()<fieldset><legend>注册表单</legend><ol><li>@Html.LabelFor(m => m.UserName)@Html.TextBoxFor(m => m.UserName)</li><li>@Html.LabelFor(m => m.Email)@Html.TextBoxFor(m => m.Email)</li><li>@Html.LabelFor(m => m.ClassDate)@Html.TextBoxFor(m => m.ClassDate)</li><li>@Html.LabelFor(m => m.Password)@Html.PasswordFor(m => m.Password)</li><li>@Html.LabelFor(m => m.ConfirmPassword)@Html.PasswordFor(m => m.ConfirmPassword)</li></ol><input type="submit" value="注册" /></fieldset>
}@section Scripts {@Scripts.Render("~/bundles/jqueryval")<script src="~/Scripts/jQuery.validator.dayrange.js"></script>
}