中国身份证号码验证，支持15,18位，可验证成功90%的身份证号

中国身份证号码验证，支持15,18位，可验证成功90%的身份证号
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1. using System;
3. /// <summary>
4. /// Summary description for IDCardValid
5. /// </summary>
6. public class IDCardValid
7. {
8. public IDCardValid()
9. {
10. //
11. // TODO: Add constructor logic here
12. //
13. }
15. /// <summary>
16. /// 验证身份证号码
17. /// </summary>
18. /// <param name="Id">身份证号码</param>
19. /// <returns>验证成功为True，否则为False</returns>
20. public static bool CheckIDCard(string Id)
21. {
22. if (Id.Length == 18)
23. {
24. bool check = CheckIDCard18(Id);
25. return check;
26. }
27. else if (Id.Length == 15)
28. {
29. bool check = CheckIDCard15(Id);
30. return check;
31. }
32. else
33. {
34. return false;
35. }
36. }
37. #region 身份证号码验证
38. 
39. /// <summary>
40. /// 验证15位身份证号
41. /// </summary>
42. /// <param name="Id">身份证号</param>
43. /// <returns>验证成功为True，否则为False</returns>
44. private static bool CheckIDCard18(string Id)
45. {
46. long n = 0;
47. if (long.TryParse(Id.Remove(17), out n) == false || n < Math.Pow(10, 16) || long.TryParse(Id.Replace('x', '0').Replace('X', '0'), out n) == false)
48. {
49. return false;//数字验证
50. }
51. string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
52. if (address.IndexOf(Id.Remove(2)) == -1)
53. {
54. return false;//省份验证
55. }
56. string birth = Id.Substring(6, 8).Insert(6, "-").Insert(4, "-");
57. DateTime time = new DateTime();
58. if (DateTime.TryParse(birth, out time) == false)
59. {
60. return false;//生日验证
61. }
62. string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(',');
63. string[] Wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(',');
64. char[] Ai = Id.Remove(17).ToCharArray();
65. int sum = 0;
66. for (int i = 0; i < 17; i++)
67. {
68. sum += int.Parse(Wi[i]) * int.Parse(Ai[i].ToString());
69. }
70. int y = -1;
71. Math.DivRem(sum, 11, out y);
72. if (arrVarifyCode[y] != Id.Substring(17, 1).ToLower())
73. {
74. return false;//校验码验证
75. }
76. return true;//符合GB11643-1999标准
77. }
79. /// <summary>
80. /// 验证18位身份证号
81. /// </summary>
82. /// <param name="Id">身份证号</param>
83. /// <returns>验证成功为True，否则为False</returns>
84. private static bool CheckIDCard15(string Id)
85. {
86. long n = 0;
87. if (long.TryParse(Id, out n) == false || n < Math.Pow(10, 14))
88. {
89. return false;//数字验证
90. }
91. string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91";
92. if (address.IndexOf(Id.Remove(2)) == -1)
93. {
94. return false;//省份验证
95. }
96. string birth = Id.Substring(6, 6).Insert(4, "-").Insert(2, "-");
97. DateTime time = new DateTime();
98. if (DateTime.TryParse(birth, out time) == false)
99. {
100. return false;//生日验证
101. }
102. return true;//符合15位身份证标准
103. }
104. #endregion
105. }
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原文地址：https://www.cnblogs.com/accumulater/p/6098868.html