字符串帮助类.doc

#region 格式化/ / 格式化/ / 本身字符串/ / public static string format(this string sInput, params object args)return String.Format(sInput, args);#endregion#region 倒转字符串/ / 倒转字符串/ public static string Reverse(this string sInput)char chars = sInput.ToCharArray();Array.Reverse(chars);return new String(chars);#endregion#region 判断是否为email/ / 判断是否为email/ / / public static bool IsEmail(string email)if (string.IsNullOrWhiteSpace(email)return false;string pattern = w+(-+.w+)*w+(-.w+)*.w+(-.w+)*;return Regex.IsMatch(email, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);#endregion#region 判断是否为手机号/ / 判断是否为手机号/ / / public static bool IsMobile(string mobile)if (string.IsNullOrWhiteSpace(mobile)return false;string pattern = (13|15|18)0-99$;return Regex.IsMatch(mobile, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);#endregion#region 判断是否为电话/ / 判断是否为电话/ /85/ public static bool IsPhone(string phone)if (string.IsNullOrWhiteSpace(phone)return false;string pattern = (0-93,4)|0-93,4-)?0-97,8(-0-92,4)?$;return Regex.IsMatch(phone, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);#endregion#region 判断是否为邮编/ / 判断是否为邮编/ / 415118/ public static bool IsPostCode(string postcode)if (string.IsNullOrWhiteSpace(postcode)return false;string pattern = 0-96$;return Regex.IsMatch(postcode, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);#endregion#region 是否有效的姓名/ / 是否有效的姓名/ / / public static bool IsValidName(string name)if (string.IsNullOrWhiteSpace(name)return false;string pattern = (u4e00-u9fa52,5)|(a-zA-Z1,10a-zA-Z. 1,20a-zA-Z1,10)$;return Regex.IsMatch(name, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);#endregion#region 是否有效的中文名/ / 是否有效的中文名/ / / public static bool IsValidChineseName(string name)if (string.IsNullOrWhiteSpace(name)return false;string pattern = u4e00-u9fa52,5$;return Regex.IsMatch(name, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);#endregion#region 是否为正确的QQ号/ / 是否为正确的QQ号/ / / public static bool IsQQ(string qq)if (string.IsNullOrWhiteSpace(qq)return false;string pattern = 1-90-94,$;return Regex.IsMatch(qq, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);#endregion#region 是否数字/ / 是否数字/ / / public static bool IsNumeric(string sNumeric)return (new Regex(+-?0-9*.?0-9+$).IsMatch(sNumeric);#endregion#region 是否整数/ / 是否整数/ / / public static bool IsInt(string intString)return (new Regex(+-?0-9+$).IsMatch(intString);#endregion#region 是否为正整数/ / 是否为正整数/ / / public static bool IsPosInt(string intString)return (new Regex(0-9*1-90-9*$).IsMatch(intString);#endregion#region 自定义截取字符串/ / 自定义截取字符串/ / 待截取的字符串/ 长度/ 是否带./ public static string SubString(string str, int len, bool hasDots)if (string.IsNullOrWhiteSpace(str) return string.Empty;string dots = string.Empty;if (len = str.Length)return str;if (hasDots)dots = .;return str.Substring(0, len) + dots;#endregion#region 取得客户端IP地址/获取客户端IPpublic static string GetClientIP()string result = HttpContext.Current.Request.ServerVariablesHTTP_X_FORWARDED_FOR;if (null = result | result = String.Empty)result = HttpContext.Current.Request.ServerVariablesREMOTE_ADDR;if (null = result | result = String.Empty)result = HttpContext.Current.Request.UserHostAddress;if (null = result | result = String.Empty)return ;if (result.Equals(:1)return ;return result;/ / 将最后一位数字换为*/ / 输入的ip/ public static string FilterLastNum(string ip)string result = string.Empty;string s = ip.Split(.);for (int i = 0; i s.Length - 1; i+)result += si + .;result += *;return result;#endregion#region 将ID字符串转化为int数组/ / 将ID字符串转化为int数组,默认使用空格和逗号分割/ / / / public static List ConvertFromIdString(string idString,params char splitChars)if (!string.IsNullOrWhiteSpace(idString)List strings;if(splitChars = null|splitChars.Length = 0)strings = idString.Split(new , , StringSplitOptions.RemoveEmptyEntries).ToList();elsestrings = idString.Split(splitChars, StringSplitOptions.RemoveEmptyEntries).ToList();return strings.ConvertAll(DataTypeHelper.GetInt32);return new List();#endregion#region 获取合法的主键字符串/ / 获取合法的主键字符串，比如 1,3,6,7/ / / public static String GetLegalKeyStr(String strKeys)if (String.IsNullOrWhiteSpace(strKeys)return String.Empty;List list = new List();foreach (String key in strKeys.Split(, )if (Regex.IsMatch(key, 0-9+$, RegexOptions.Compiled)list.Add(key);list.Sort();return String.Join(, list.Distinct().ToArray();#endregion#region 获取合法的字典字符串/ / 获取合法的字典字符串，比如 a,b,d,e/ / / public static string GetLegalDictKey(string strKeys)if (string.IsNullOrWhiteSpace(strKeys)return string.Empty;strKeys = strKeys.ToLower();strKeys = Regex.Replace(strKeys, ,a-z0-9_, string.Empty, RegexOptions.Compiled);strKeys = Regex.Replace(strKeys, ,2, , RegexOptions.Compiled);strKeys = strKeys.Trim(,);return strKeys;#endregion#region 获取合法的主键字符串/ / 获取前后有,的主键字符串，比如 ,1,3,6,7,/ / / public static string GetWrapedKeyStr(string strKeys)return strKeys = string.Format(,0, GetLegalKeyStr(strKeys);#endregion#region 获取合法的字典字符串/ / 获取有的字典字符串，比如 a,b,c,d/ / / public static string GetWrapedDictKey(string strKeys)strKeys = GetLegalDictKey(strKeys);if (string.IsNullOrEmpty(strKeys)return string.Empty;strKeys = strKeys.Replace(, ,);return strKeys = string.Format(0, strKeys);#endregion#region 转换文件大小/ / 转换文件大小/ / / public static String FormatFileSize(long fileSize)String fileSizeString = ;if (fileSize 1024)fileSizeString = fileSize + B;else if (fileSize 1024 * 1024)fileSizeString = String.Format(0:F2, (double)fileSize / 1024) + K;else if (fileSize 1024 * 1024 * 1024)fileSizeString = String.Format(0:F2, (double)fileSize / (1024 * 1024) + M;elsefileSizeString = String.Format(0:F2, (double)fileSize / (1024 * 1024 * 1024) + G;return fileSizeString;#endregion#region 通过正则匹配获取值/ / 通过正则匹配获取值/ / / / public static GroupCollection GetPatternValue(string input, string pattern)if (string.IsNullOrWhiteSpace(input)return null;Match match = Regex.Match(input, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);if (match.Success & match.Groups.Count 0)return match.Groups;return null;/ / 通过正则匹配获取值/ / / / public static MatchCollection GetPatternValues(string input, string pattern)if (string.IsNullOrWhiteSpace(input)return null;MatchCollection match = Regex.Matches(input, pattern, RegexOptions.IgnoreCase | RegexOptions.Compiled);return match;#endregion#region 合并路径/ / 合并路径/ / / / / public static string CombinPath(char separator, string path1, string path2)if (string.IsNullOrWhiteSpace(path1) | string.IsNullOrWhiteSpace(path2)return path1 ? path2;bool b1 = path1path1.Length - 1 = separator;bool b2 = path20 = separator;if (b1 & b2)return path1 + path2.TrimStart(separator);if (b1 | b2)return path1 + path2;return string.Concat(path1, separator, path2);/ / 合并路径/ / / / public static string CombinPath(char separator, params string paths)if (paths = null | paths.Length = 0)return string.Empty;else if (paths.Length = 1)return paths0;System.Text.StringBuilder sb = new System.Text.StringBuilder(paths0);for (int i = 1; i paths.Length; +i)string path = pathsi;if (string.IsNullOrEmpty(path)continue;bool b1 = sbsb.Length - 1 = separator;bool b2 = path0 = separator;if (b1 & b2)sb.Append(path.TrimStart(separator);else if (b1 | b2)sb.Append(path);elsesb.Append(separator);sb.Append(path);return sb.ToString();#endregion#region 计算页数/ / 计算页数/ / / / public static int GetPageCount(int totalRecordCount, int pageSize)return Convert.ToInt32(Math.Ceiling(double)totalRecordCount / pageSize);#endregion#region 版本比较/ / 版本比较/ / / / public static int CompareVersion(string version1, string version2)version1 = Regex.Replace(version1, 0-9., , RegexOptions.Compiled);version2 = Regex.Replace(version2, 0-9., , RegexOptions.Compiled);if (string.IsNullOrEmpty(version1) | string.IsNullOrEmpty(version2)return string.Compare(version1, version2);Version v1 = new Version(version1);Version v2 = new Version(version2);return v1.CompareTo(v2);#endregion#region 将字符串形式的IP转换位long/ 将字符串形式的IP转换位long/public static long IpToLong(string ipAddress)if (string.IsNullOrWhiteSpace(ipAddress) return 0;byte ip_bytes = new byte8;string strArr = ipAddress.Split(new char . );if (strArr.Length != 4) return 0;for (int i = 0; i 4; i+)byte b = 0;if (byte.TryParse(strArr3 - i, out b)ip_bytesi = b;elsereturn 0;return BitConverter.ToInt64(ip_bytes, 0);#endregion#region 混淆密码(如将123456变为1*6)/ / 混淆密码(如将123456变为1*6)/ / / public static string MixPasswd(string passwd)if (string.IsNullOrEmpty(passwd) return string.Empty;char newPasswd = new charpasswd.Length;int mixed = 0;int i = 0;Random rand = new Random();foreach (char ch in passwd)if (rand.Next(100) 55)+mixed;newPasswdi+ = *;elsenewPasswdi+ = ch;i = 0;while (mixed passwd.Length / 2) / 至少一半替换为*if (newPasswdi != *)+mixed;newPasswdi+ = *;return new string(newPasswd);#endregion#region 日期/ / 判断今天是第几周/ / / public static int WeekNumber(DateTime date)string firstDateText = date.Year + -1-1;DateTime firstDay = Convert.ToDateTime(firstDateText);int theday;switch (firstDay.DayOfWeek)case DayOfWeek.Monday:theday = -1;break;case DayOfWeek.Tuesday:theday = 0;break;case DayOfWeek.Wednesday:theday = 1;break;case DayOfWeek.Thursday:theday = 2;break;case DayOfWeek.Friday:theday = 3;break;case DayOfWeek.Saturday:theday = 4;