做一个牛XX的身份证号验证类(支持15位和18位)
2015-06-16 15:41
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#region 是否合法的中国身份证号码 protected bool IsChineseID() { if (str.Length == 15) str = CidUpdate(str); if (str.Length == 18) { string strResult = CheckCidInfo(str); if (strResult == "非法地区" || strResult == "非法生日" || strResult == "非法证号") return false; else return true; } else return false; } #endregion
#region 中国身份证号码验证 private 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 = string.Empty; System.Text.RegularExpressions.Regex rg = new System.Text.RegularExpressions.Regex(@"^\d{17}(\d|x)$"); System.Text.RegularExpressions.Match mc = rg.Match(cid); if (!mc.Success) return string.Empty; 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"); else 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")); } #endregion
#region 身份证号码15升级为18位 private string CidUpdate(string ShortCid) { char[] strJiaoYan = { '1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2' }; int[] intQuan = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 }; string strTemp; int intTemp = 0; strTemp = ShortCid.Substring(0, 6) + "19" + ShortCid.Substring(6); for (int i = 0; i <= strTemp.Length - 1; i++) { intTemp += int.Parse(strTemp.Substring(i, 1)) * intQuan[i]; } intTemp = intTemp % 11; return strTemp + strJiaoYan[intTemp]; } #endregion
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