C#自定义的字符串操作增强类实例

using System;using System.Collections.Generic;using System.Text;using System.Text.RegularExpressions;namespace DotNet.Utilities{  /// <summary>  /// 字符串操作类  /// 1、GetStrArray(string str, char speater, bool toLower) 把字符串按照分隔符转换成 List  /// 2、GetStrArray(string str) 把字符串转 按照, 分割 换为数据  /// 3、GetArrayStr(List list, string speater) 把 List 按照分隔符组装成 string  /// 4、GetArrayStr(List list) 得到数组列表以逗号分隔的字符串  /// 5、GetArrayValueStr(Dictionary<int, int> list)得到数组列表以逗号分隔的字符串  /// 6、DelLastComma(string str)删除最后结尾的一个逗号  /// 7、DelLastChar(string str, string strchar)删除最后结尾的指定字符后的字符  /// 8、ToSBC(string input)转全角的函数(SBC case)  /// 9、ToDBC(string input)转半角的函数(SBC case)  /// 10、GetSubStringList(string o_str, char sepeater)把字符串按照指定分隔符装成 List 去除重复  /// 11、GetCleanStyle(string StrList, string SplitString)将字符串样式转换为纯字符串  /// 12、GetNewStyle(string StrList, string NewStyle, string SplitString, out string Error)将字符串转换为新样式  /// 13、SplitMulti(string str, string splitstr)分割字符串  /// 14、SqlSafeString(string String, bool IsDel)  /// </summary>  public class StringPlus  {    /// <summary>    /// 把字符串按照分隔符转换成 List    /// </summary>    /// <param name="str">源字符串</param>    /// <param name="speater">分隔符</param>    /// <param name="toLower">是否转换为小写</param>    /// <returns></returns>    public static List<string> GetStrArray(string str, char speater, bool toLower)    {      List<string> list = new List<string>();      string[] ss = str.Split(speater);      foreach (string s in ss)      {        if (!string.IsNullOrEmpty(s) && s != speater.ToString())        {          string strVal = s;          if (toLower)          {            strVal = s.ToLower();          }          list.Add(strVal);        }      }      return list;    }    /// <summary>    /// 把字符串转 按照, 分割 换为数据    /// </summary>    /// <param name="str"></param>    /// <returns></returns>    public static string[] GetStrArray(string str)    {      return str.Split(new Char[] { ',' });    }    /// <summary>    /// 把 List<string> 按照分隔符组装成 string    /// </summary>    /// <param name="list"></param>    /// <param name="speater"></param>    /// <returns></returns>    public static string GetArrayStr(List<string> list, string speater)    {      StringBuilder sb = new StringBuilder();      for (int i = 0; i < list.Count; i++)      {        if (i == list.Count - 1)        {          sb.Append(list[i]);        }        else        {          sb.Append(list[i]);          sb.Append(speater);        }      }      return sb.ToString();    }    /// <summary>    /// 得到数组列表以逗号分隔的字符串    /// </summary>    /// <param name="list"></param>    /// <returns></returns>    public static string GetArrayStr(List<int> list)    {      StringBuilder sb = new StringBuilder();      for (int i = 0; i < list.Count; i++)      {        if (i == list.Count - 1)        {          sb.Append(list[i].ToString());        }        else        {          sb.Append(list[i]);          sb.Append(",");        }      }      return sb.ToString();    }    /// <summary>    /// 得到数组列表以逗号分隔的字符串    /// </summary>    /// <param name="list"></param>    /// <returns></returns>    public static string GetArrayValueStr(Dictionary<int, int> list)    {      StringBuilder sb = new StringBuilder();      foreach (KeyValuePair<int, int> kvp in list)      {        sb.Append(kvp.Value + ",");      }      if (list.Count > 0)      {        return DelLastComma(sb.ToString());      }      else      {        return "";      }    }    #region 删除最后一个字符之后的字符    /// <summary>    /// 删除最后结尾的一个逗号    /// </summary>    public static string DelLastComma(string str)    {      return str.Substring(0, str.LastIndexOf(","));    }    /// <summary>    /// 删除最后结尾的指定字符后的字符    /// </summary>    public static string DelLastChar(string str, string strchar)    {      return str.Substring(0, str.LastIndexOf(strchar));    }    #endregion    /// <summary>    /// 转全角的函数(SBC case)    /// </summary>    /// <param name="input"></param>    /// <returns></returns>    public static string ToSBC(string input)    {      //半角转全角：      char[] c = input.ToCharArray();      for (int i = 0; i < c.Length; i++)      {        if (c[i] == 32)        {          c[i] = (char)12288;          continue;        }        if (c[i] < 127)          c[i] = (char)(c[i] + 65248);      }      return new string(c);    }    /// <summary>    /// 转半角的函数(SBC case)    /// </summary>    /// <param name="input">输入</param>    /// <returns></returns>    public static string ToDBC(string input)    {      char[] c = input.ToCharArray();      for (int i = 0; i < c.Length; i++)      {        if (c[i] == 12288)        {          c[i] = (char)32;          continue;        }        if (c[i] > 65280 && c[i] < 65375)          c[i] = (char)(c[i] - 65248);      }      return new string(c);    }    /// <summary>    /// 把字符串按照指定分隔符装成 List 去除重复    /// </summary>    /// <param name="o_str"></param>    /// <param name="sepeater"></param>    /// <returns></returns>    public static List<string> GetSubStringList(string o_str, char sepeater)    {      List<string> list = new List<string>();      string[] ss = o_str.Split(sepeater);      foreach (string s in ss)      {        if (!string.IsNullOrEmpty(s) && s != sepeater.ToString())        {          list.Add(s);        }      }      return list;    }    #region 将字符串样式转换为纯字符串    /// <summary>    /// 将字符串样式转换为纯字符串    /// </summary>    /// <param name="StrList"></param>    /// <param name="SplitString"></param>    /// <returns></returns>    public static string GetCleanStyle(string StrList, string SplitString)    {      string RetrunValue = "";      //如果为空，返回空值      if (StrList == null)      {        RetrunValue = "";      }      else      {        //返回去掉分隔符        string NewString = "";        NewString = StrList.Replace(SplitString, "");        RetrunValue = NewString;      }      return RetrunValue;    }    #endregion    #region 将字符串转换为新样式    /// <summary>    /// 将字符串转换为新样式    /// </summary>    /// <param name="StrList"></param>    /// <param name="NewStyle"></param>    /// <param name="SplitString"></param>    /// <param name="Error"></param>    /// <returns></returns>    public static string GetNewStyle(string StrList, string NewStyle, string SplitString, out string Error)    {      string ReturnValue = "";      //如果输入空值，返回空，并给出错误提示      if (StrList == null)      {        ReturnValue = "";        Error = "请输入需要划分格式的字符串";      }      else      {        //检查传入的字符串长度和样式是否匹配,如果不匹配，则说明使用错误。给出错误信息并返回空值        int strListLength = StrList.Length;        int NewStyleLength = GetCleanStyle(NewStyle, SplitString).Length;        if (strListLength != NewStyleLength)        {          ReturnValue = "";          Error = "样式格式的长度与输入的字符长度不符，请重新输入";        }        else        {          //检查新样式中分隔符的位置          string Lengstr = "";          for (int i = 0; i < NewStyle.Length; i++)          {            if (NewStyle.Substring(i, 1) == SplitString)            {              Lengstr = Lengstr + "," + i;            }          }          if (Lengstr != "")          {            Lengstr = Lengstr.Substring(1);          }          //将分隔符放在新样式中的位置          string[] str = Lengstr.Split(',');          foreach (string bb in str)          {            StrList = StrList.Insert(int.Parse(bb), SplitString);          }          //给出最后的结果          ReturnValue = StrList;          //因为是正常的输出，没有错误          Error = "";        }      }      return ReturnValue;    }    #endregion    /// <summary>    /// 分割字符串    /// </summary>    /// <param name="str"></param>    /// <param name="splitstr"></param>    /// <returns></returns>    public static string[] SplitMulti(string str, string splitstr)    {      string[] strArray = null;      if ((str != null) && (str != ""))      {        strArray = new Regex(splitstr).Split(str);      }      return strArray;    }    public static string SqlSafeString(string String, bool IsDel)    {      if (IsDel)      {        String = String.Replace("'", "");        String = String.Replace("/"", "");        return String;      }      String = String.Replace("'", "'");      String = String.Replace("/"", """);      return String;    }    #region 获取正确的Id，如果不是正整数，返回0    /// <summary>    /// 获取正确的Id，如果不是正整数，返回0    /// </summary>    /// <param name="_value"></param>    /// <returns>返回正确的整数ID，失败返回0</returns>    public static int StrToId(string _value)    {      if (IsNumberId(_value))        return int.Parse(_value);      else        return 0;    }    #endregion    #region 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。    /// <summary>    /// 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。(0除外)    /// </summary>    /// <param name="_value">需验证的字符串。。</param>    /// <returns>是否合法的bool值。</returns>    public static bool IsNumberId(string _value)    {      return QuickValidate("^[1-9]*[0-9]*$", _value);    }    #endregion    #region 快速验证一个字符串是否符合指定的正则表达式。    /// <summary>    /// 快速验证一个字符串是否符合指定的正则表达式。    /// </summary>    /// <param name="_express">正则表达式的内容。</param>    /// <param name="_value">需验证的字符串。</param>    /// <returns>是否合法的bool值。</returns>    public static bool QuickValidate(string _express, string _value)    {      if (_value == null) return false;      Regex myRegex = new Regex(_express);      if (_value.Length == 0)      {        return false;      }      return myRegex.IsMatch(_value);    }    #endregion  }}