Question

C#字符串中正则表达式匹配指定字符串段删除其它字符串

C#字符串中正则表达式匹配指定字符串段删除其它字符串
如下字符
1P+N C6 30mA (710063300000002)
1P+N C6 30mA (710063300000002)
1P+N C10 30mA (710063300000003)
1P+N C16 30mA (710063300000004)
1P+N C20 30mA (710063300000005)
1P+N C25 30mA (710063300000006)
1P+N C32 30mA (710063300000007)
1P+N C40 30mA (710063300000008)
2P C6 30mA (710063300000009)
2P C10 30mA (710063300000010)
2P C16 30mA (710063300000011)
2P C20 30mA (710063300000012)
2P C25 30mA (710063300000013)
2P C32 30mA (710063300000014)
2P C40 30mA (710063300000015)
3P C6 30mA (710063300000016)
3P C10 30mA (710063300000017)
3P C16 30mA (710063300000018)
3P C20 30mA (710063300000019)
3P C25 30mA (710063300000020)
3P C32 30mA (710063300000021)
上图如需要两种操作方式：
删除括号内的所有字符串？
删除除括号外的所有字符串？

Answer 1

string str = "1P+N C6 30mA (710063300000002)\r\n 1P+N C6 30mA (710063300000002)\r\n 1P+N C10 30mA (710063300000003)\r\n 1P+N C16 30mA (710063300000004)\r\n 1P+N C20 30mA (710063300000005)\r\n 1P+N C25 30mA (710063300000006)\r\n 1P+N C32 30mA (710063300000007)\r\n 1P+N C40 30mA (710063300000008)\r\n 2P C6 30mA (710063300000009)\r\n 2P C10 30mA (710063300000010)\r\n 2P C16 30mA (710063300000011)\r\n 2P C20 30mA (710063300000012)\r\n 2P C25 30mA (710063300000013)\r\n 2P C32 30mA (710063300000014)\r\n 2P C40 30mA (710063300000015)\r\n 3P C6 30mA (710063300000016)\r\n 3P C10 30mA (710063300000017)\r\n 3P C16 30mA (710063300000018)\r\n 3P C20 30mA (710063300000019)\r\n 3P C25 30mA (710063300000020)\r\n 3P C32 30mA (710063300000021)";
           //删除括号内的所有字符串
           Regex reg = new Regex("\\([^\\(\\)]+\\)");
           string str2 = reg.Replace(str, "()");
           Console.WriteLine(str2);
            Console.WriteLine("===============================");
           //删除除括号外的所有字符串
           Regex reg1 = new Regex("[^\\(\\)\r\n]+(\\([^\\(\\)]+\\))");
           string str3 = reg1.Replace(str, "$1");
           Console.WriteLine(str3);

Answer 2

你可以分离字符串，再合起来嘛

Answer 3

你这是一个完整的字符串，还是多个字符串。

追问

完整的txt文件