总结的5个C#字符串操作方法分享

/// <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)    {      var list = new List<string>();      var ss = str.Split(speater);      foreach (var s in ss)      {        if (string.IsNullOrWhiteSpace(s) || s == speater.ToString(CultureInfo.InvariantCulture)) continue;        var 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[] { ',', '，' });    }

/// <summary>    /// 得到数组列表以逗号分隔的字符串    /// </summary>    /// <param name="list"></param>    /// <param name="speater"></param>    /// <returns></returns>    public static string GetArrayStr(List<string> list, string speater)    {      var sb = new StringBuilder();      for (var 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>    /// 得到字符串长度    /// </summary>    /// <param name="inputStr"></param>    /// <returns></returns>    public static int StrLength(string inputStr)    {      var asc = new ASCIIEncoding();      var s = asc.GetBytes(inputStr);      return s.Sum(t => t == 63 ? 2 : 1);    }

/// <summary>    /// 截取指定长度字符串    /// </summary>    /// <param name="inputString"></param>    /// <param name="len"></param>    /// <returns></returns>    public static string CutStr(string inputString, int len)    {      var isShowFix = false;      if (len % 2 == 1)      {        isShowFix = true;        len--;      }      var ascii = new ASCIIEncoding();      var tempLen = 0;      var tempString = "";      var s = ascii.GetBytes(inputString);      for (var i = 0; i < s.Length; i++)      {        tempLen += s[i] == 63 ? 2 : 1;        try        {          tempString += inputString.Substring(i, 1);        }        catch        {          break;        }        if (tempLen > len)          break;      }      var mybyte = Encoding.Default.GetBytes(inputString);      if (isShowFix && mybyte.Length > len)        tempString += "…";      return tempString;     }