C# 字符串=MOMODErnMOMODE 1rnrnAPMODErnAPMODE 0rnrnPWMODErnPWMODE 0rnrnFQMODErnFQMODE 1rnrnLMMODErnLMMODE 0rnrn 用 正则表达式 只保留数字 代码

可以使用正则表达式 \d+ 匹配字符串中的数字部分，然后使用 Replace 方法将非数字部分替换为空字符串即可。

示例代码：

string input = ".MOMODE\r\n>MOMODE: 1\r\n>\r\n>.APMODE\r\n>APMODE: 0\r\n>\r\n>.PWMODE\r\n>PWMODE: 0\r\n>\r\n>.FQMODE\r\n>FQMODE: 1\r\n>\r\n>.LMMODE\r\n>LMMODE: 0\r\n>\r\n>"; string pattern = @"\d+"; string output = Regex.Replace(input, pattern, "");

Console.WriteLine(output);

输出结果：

.MOMODE\r\n>MOMODE: \r\n>\r\n>.APMODE\r\n>APMODE: \r\n>\r\n>.PWMODE\r\n>PWMODE: \r\n>\r\n>.FQMODE\r\n>FQMODE: \r\n>\r\n>.LMMODE\r\n>LMMODE: \r\n>\r\n>