惠、澐、樂的爹

2008-10-14

檢查統一編號是不是正確

摘要:檢查統一編號是不是正確

 

01 /// <summary>
02         /// 檢查統一編號是否正確
03         /// </summary>
04         /// <param name="id1">要檢查的統一編號字串</param>
05         /// <returns>Boolean值</returns>
06         public static Boolean isCompanyID(String strIdno)
07         {
08             if (strIdno == null || strIdno.Trim().Length != 8)
09             {
10                 return false;
11             }
12             else if (!isInteger(strIdno))
13             {
14                 return false;
15             }
16
17             int ii;
18
19             try
20             {
21                 ii = Convert.ToInt32(strIdno);
22             }
23             catch (Exception)
24             {
25                 return false;
26             }
27             int c1;
28             int c2;
29             int c3;
30             int c4;
31             int c5;
32             int c6;
33             int c7;
34             int c8;
35             try
36             {
37                 c1 = Convert.ToInt32(strIdno.Substring(0, 1));
38                 c2 = Convert.ToInt32(strIdno.Substring(1, 1));
39                 c3 = Convert.ToInt32(strIdno.Substring(2, 1));
40                 c4 = Convert.ToInt32(strIdno.Substring(3, 1));
41                 c5 = Convert.ToInt32(strIdno.Substring(4, 1));
42                 c6 = Convert.ToInt32(strIdno.Substring(5, 1));
43                 c7 = Convert.ToInt32(strIdno.Substring(6, 1));
44                 c8 = Convert.ToInt32(strIdno.Substring(7, 1));
45             }
46             catch (Exception)
47             {
48                 return false;
49             }
50
51             int y = c1 + c3 + c5 + c8;
52             int t = c2 * 2;
53             y = y + t / 10 + t % 10;
54             t = c4 * 2;
55             y = y + t / 10 + t % 10;
56             t = c6 * 2;
57             y = y + t / 10 + t % 10;
58             t = c7 * 4;
59             y = y + t / 10 + t % 10;
60             int k = y;
61             if (y % 10 == 0)
62             {
63                 return true;
64             }
65             if (c7 == 7)
66             {
67                 y -= 9;
68                 return y % 10 == 0;
69             }
70             else
71             {
72                 return false;
73             }
74         }