/// <summary> 
/// 验证身份证号码类 
/// </summary> 
public class IDCardValidation 
{ 
        /// <summary> 
        /// 验证身份证合理性 
        /// </summary> 
        /// <param name="Id"></param> 
        /// <returns></returns> 
        public bool CheckIDCard(string idNumber) 
        { 
            if (idNumber.Length == 18) 
            { 
                bool check = CheckIDCard18(idNumber); 
                return check; 
            } 
            else if (idNumber.Length == 15) 
            { 
                bool check = CheckIDCard15(idNumber); 
                return check; 
            } 
            else 
            { 
                return false; 
            } 
        } 
 
 
        /// <summary> 
        /// 18位身份证号码验证 
        /// </summary> 
        private bool CheckIDCard18(string idNumber) 
        { 
            long n = 0; 
            if (long.TryParse(idNumber.Remove(17), out n) == false  
                || n < Math.Pow(10, 16) || long.TryParse(idNumber.Replace('x', '0').Replace('X', '0'), out n) == false) 
            { 
                return false;//数字验证 
            } 
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91"; 
            if (address.IndexOf(idNumber.Remove(2)) == -1) 
            { 
                return false;//省份验证 
            } 
            string birth = idNumber.Substring(6, 8).Insert(6, "-").Insert(4, "-"); 
            DateTime time = new DateTime(); 
            if (DateTime.TryParse(birth, out time) == false) 
            { 
                return false;//生日验证 
            } 
            string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(','); 
            string[] Wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(','); 
            char[] Ai = idNumber.Remove(17).ToCharArray(); 
            int sum = 0; 
            for (int i = 0; i < 17; i++) 
            { 
                sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString()); 
            } 
            int y = -1; 
            Math.DivRem(sum, 11, out y); 
            if (arrVarifyCode[y] != idNumber.Substring(17, 1).ToLower()) 
            { 
                return false;//校验码验证 
            } 
            return true;//符合GB11643-1999标准 
        } 
 
 
        /// <summary> 
        /// 16位身份证号码验证 
        /// </summary> 
        private bool CheckIDCard15(string idNumber) 
        { 
            long n = 0; 
            if (long.TryParse(idNumber, out n) == false || n < Math.Pow(10, 14)) 
            { 
                return false;//数字验证 
            } 
            string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91"; 
            if (address.IndexOf(idNumber.Remove(2)) == -1) 
            { 
                return false;//省份验证 
            } 
            string birth = idNumber.Substring(6, 6).Insert(4, "-").Insert(2, "-"); 
            DateTime time = new DateTime(); 
            if (DateTime.TryParse(birth, out time) == false) 
            { 
                return false;//生日验证 
            } 
            return true; 
        }  
}

IDCardValidation card = new IDCardValidation(); 

 

//从网上身份证大全找来的，验证结果为true 
bool result = card.CheckIDCard("522324197508045617"); 

Console.WriteLine(result.ToString()); 
//随便编的，验证结果为false 
result = card.CheckIDCard("612427199901281214"); 

Console.WriteLine(result.ToString()); 

Console.ReadLine();