using  System;
using  System.Collections.Generic;
using  System.Text;
using  System.Text.RegularExpressions;

namespace  C_Idcard
... {
    public class Idcard
    ...{
        public Idcard()
        ...{
            
        
        }
        public static string validate(string cid)
        ...{
            string mResult;
            System.Text.RegularExpressions.Regex rg = new System.Text.RegularExpressions.Regex(@"^d{17}(d|x)$");
            System.Text.RegularExpressions.Match mc = rg.Match(cid);
            System.Text.RegularExpressions.Regex rg2 = new System.Text.RegularExpressions.Regex(@"^d{15}$");
            System.Text.RegularExpressions.Match mc2 = rg.Match(cid);
            if (mc.Success)
            ...{
                mResult = CheckCidInfo(cid);
                return mResult;

            }
            else if (mc2.Success)
            ...{
                string str = per15To18(cid);
                mResult = CheckCidInfo(str);
                return mResult;

            }
            else
            ...{ return "身份证位数不对"; }



        
        
        }
        public static string CheckCidInfo(string cid)
        ...{
                     string[] aCity = new string[]...{null,null,null,null,null,null,null,null,null,null,null,"北京","天津","河北","山西","内蒙古",null,null,null,null,null,"辽宁","吉林","黑龙江",null,null,null,null,null,null,null,"上海","江苏","浙江","安微","福建","江西","山东",null,null,null,"河南","湖北","湖南","广东","广西","海南",null,null,null,"重庆","四川","贵州","云南","西藏",null,null,null,null,null,null,"陕西","甘肃","青海","宁夏","新疆",null,null,null,null,null,"台湾",null,null,null,null,null,null,null,null,null,"香港","澳门",null,null,null,null,null,null,null,null,"国外"};
                     double iSum=0;
                     string info="";
                     
                     
                     cid = cid.ToLower();
                     cid = cid.Replace("x","a");
                     if(aCity[int.Parse(cid.Substring(0,2))]==null)
                        ...{
                             return "非法地区";
                        }
                     try
                        ...{
                         DateTime.Parse(cid.Substring(6,4)+"-"+cid.Substring(10,2)+"-"+cid.Substring(12,2));
                        }
                     catch
                        ...{
                     return "非法生日";
                        }
                     for(int i=17;i>=0;i--)
                        ...{    
                         iSum +=(System.Math.Pow(2,i)%11)*int.Parse(cid[17-i].ToString(),System.Globalization.NumberStyles.HexNumber);

                        }
                     if(iSum%11!=1)
                             return("非法证号");

                         return(aCity[int.Parse(cid.Substring(0, 2))] + "," + cid.Substring(6, 4) + "-" + cid.Substring(10, 2) + "-" + cid.Substring(12, 2) + "," + ((int.Parse(cid.Substring(16, 1)) % 2 == 1) ? "男" : "女"));
                         

          }
        private static string per15To18(string perIDSrc)
        ...{
            int iS = 0;

            //加权因子常数 
            int[] iW = new int[] ...{ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
            //校验码常数 
            string LastCode = "10X98765432";
            //新身份证号 
            string perIDNew;

            perIDNew = perIDSrc.Substring(0, 6);
            //填在第6位及第7位上填上‘1’，‘9’两个数字 
            perIDNew += "19";

            perIDNew += perIDSrc.Substring(6, 9);

            //进行加权求和 
            for (int i = 0; i < 17; i++)
            ...{
                iS += int.Parse(perIDNew.Substring(i, 1)) * iW[i];
            }

            //取模运算，得到模值 
            int iY = iS % 11;
            //从LastCode中取得以模为索引号的值，加到身份证的最后一位，即为新身份证号。 
            perIDNew += LastCode.Substring(iY, 1);

            return perIDNew;
        }

    }

    

}