/// inputStr 需要过滤的字符串 /// lst 关键词集合 public static string FilterSensitiveWord(string inputStr，List
     
       lst)        {         var tempLst = lst;            if (!string.IsNullOrEmpty(inputStr))            {                foreach (var item in lst)                {                    var sensitiveWord = Regex.Escape(item.Trim());                    var regexSesitiveWord = "";                    for (int i = 0; i < sensitiveWord.Length; i++)                    {                        var ch = sensitiveWord[i];                        if (ch == '\\')                        {                            i++;                            regexSesitiveWord += @"\" + sensitiveWord[i];                            continue;                        }                        regexSesitiveWord += ch + @"\s*?";                    }                    inputStr = Regex.Replace(inputStr, regexSesitiveWord, "", RegexOptions.IgnoreCase);                    if (inputStr == "")                    {                        break;                    }                }            }            return inputStr;        }