自定义验证规则

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace mvctest
{
    public static class MVCHellper
    {
        public static string GetErrors(ModelStateDictionary ms)
        {
            System.Text.StringBuilder sbtext = new System.Text.StringBuilder();
            foreach (var item in ms.Keys)
            {
                if (ms[item].Errors.Count <= 0)
                { continue; }
                sbtext.Append("错误消息为：");
                foreach (var itemerror in ms[item].Errors)
                {
                    sbtext.Append(itemerror.ErrorMessage + "<br/>");
                }

            }
            return sbtext.ToString();

        }


         
    }
    /// <summary>
    /// 第一种
    /// </summary>
    public class PhoneAttribute : RegularExpressionAttribute
    {
        public PhoneAttribute() : base(@"^(?:\+?86)?1(?:3\d{3}|5[^4\D]\d{2}|8\d{3}|7(?:[35678]\d{2}|4(?:0\d|1[0-2]|9\d))|9[189]\d{2}|66\d{2})\d{6}$")
        {
            this.ErrorMessage = "手机号不正确";
        }
    }

    /// <summary>
    /// 第二种
    /// </summary>
    public class chinaPhoneAttribute : ValidationAttribute
    {
        public chinaPhoneAttribute()
        {
            this.ErrorMessage="错误";
        }
        public override bool IsValid(object value)
        {
            if (value is string)
            {
                string s = (string)value;
                if (s.StartsWith("13"))
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            else
            {
                return false;
            }
            //return base.IsValid(value);
        }
    }

         
    
}