The simplest C # verification/escalation citizenship number/ID card number

1 using System;
2 using System. Text. RegularExpressions;
3
4 namespace Hongcing
5 {
6 /// <summary>
7 // authenticate your citizenship number/ID card number
8 /// </summary>
9 public static class VerifyIdCard
10 {
11 static readonly int [] iW = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };
12 // static readonly char [] szVerCode = {1, 0, X, 9, 8, 7, 6, 5, 4, 3, 2 };
13 static readonly string szVerCode = "10X98765432 ";
14
15 /// <summary>
16 // obtain the verification code
17 /// </summary>
18 /// <param name = "id"> 17-Bit String </param>
19 /// <returns> return verification code </returns>
20 private static char GetVerifyChar (string id)
21 {