C#实现中华人民共和国身份证验证【转贴】

  1大陸身份證號碼驗證#region 身份证验证
  2private bool CheckIDCard_CHS(string IDCard)
  3{
  4        string[] arrVarifyCode=("1,0,x,9,8,7,6,5,4,3,2").Split(',');
  5        string[] Wi=("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
  6        string[] Checker=("1,9,8,7,6,5,4,3,2,1,1").Split(',');
  7        int intLength=IDCard.Length;
  8 
  9        int i=0,TotalmulAiWi=0;
 10        int modValue=0;
 11        string strVerifyCode="";
 12        string Ai="";
 13        string BirthDay="";
 14        int intYear=0;
 15        int intMonth=0;
 16        int intDay=0;
 17 
 18        if(intLength<15||intLength==16||intLength==17||intLength>18)
 19        {
 20                return false;
 21        }
 22        if(intLength==18)
 23        {
 24                Ai=IDCard.Substring(0,17);
 25        }
 26        else if(intLength==15)
 27        {
 28                Ai=IDCard;
 29                Ai=Ai.Substring(0,6)+"19"+Ai.Substring(6,9);
 30        }
 31        if(!IsNumeric(Ai))return false;
 32 
 33        intYear=Convert.ToInt32(Ai.Substring(6,4));
 34        intMonth=Convert.ToInt32(Ai.Substring(10,2));
 35        intDay=Convert.ToInt32(Ai.Substring(12,2));
 36 
 37        BirthDay=intYear.ToString()+"-"+intMonth.ToString()+"-"+intDay.ToString();
 38        if(IsDateTime(BirthDay))
 39        {
 40                DateTime DateBirthDay=DateTime.Parse(BirthDay);
 41                if(DateBirthDay>DateTime.Now)
 42                {
 43                        return false;
 44                }
 45 
 46                int intYearLength=DateBirthDay.Year-DateBirthDay.Year;
 47                if(intYearLength<-140)
 48                {
 49                        return false;
 50                }
 51        }
 52 
 53        if(intMonth>12||intDay>31)
 54        {
 55                return false;
 56        }
 57 
 58        for(i=0;i<17;i++)
 59        {
 60                TotalmulAiWi=TotalmulAiWi+(Convert.ToInt32(Ai.Substring(i,1))*Convert.ToInt32(Wi[i].ToString()));
 61        }
 62        modValue=TotalmulAiWi % 11;
 63 
 64        strVerifyCode=arrVarifyCode[modValue].ToString();
 65        Ai=Ai + strVerifyCode;
 66        if(intLength==18&&IDCard!=Ai)
 67        {
 68                return false;
 69        }
 70        return true;
 71}
 72#endregion
 73/**//// <summary>
 74/// 判斷字符串是否可轉換為DateTime
 75/// </summary>
 76/// <param name="s">要判斷的字符串</param>
 77/// <returns>true=可以轉換;false=無法轉換</returns>
 78private bool IsDateTime(string s)
 79{ 
 80        try 
 81        {
 82                System.DateTime.Parse(s);
 83        } 
 84        catch
 85        {
 86                return   false;
 87        }
 88        return true; 
 89}
 90 
 91/**//// <summary>
 92/// 判断字符串是否可以转换为数字
 93/// </summary>
 94/// <param name="value">要判斷的字符串</param>
 95/// <returns>true=可以轉換;false=無法轉換</returns>
 96private bool IsNumeric(object value)
 97{
 98        try
 99        {
100                double i = Convert.ToDouble (value.ToString());
101                return true;
102        }
103        catch (FormatException)
104        {
105                return false;
106        }
107}
108 
109