18位身份证c#源代码

18位身份证c#源代码 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=""; 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 ""; } 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.HexNu mber); } 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.Subst ring(12,2)+","+(int.Parse(cid.Substring(16,1))%2==1?"男":"女")); } 全封装好的!!!复制到c#就可以用