除去html空格成一行 .net

string tmp=///吧文件读出成string的

 Regex regReplaceBlank = new Regex(">(\\s+)<", RegexOptions.IgnoreCase);
        Regex regReplaceLine = new Regex("\\s\\n", RegexOptions.IgnoreCase);
        tmp = regReplaceBlank.Replace(regReplaceLine.Replace(tmp, ""), "><");