在一个模式中提取一个动态值以将其放入另一个模式中

你可以试试 向前看 向后看

(?<=[A-Za-z][A-Za-z0-9]*\s*\(\s*)[A-Z0-9]{2,3}(?=\s*\))

我们有简单的 比赛 感兴趣的 [A-Z0-9]{2,3} 2 到 3 大写字母 数字 . 但是这个 比赛 应该是 之后 Swipe( 或 Formula1( )以及 之前 ) . 假设 成为一个 标识符

(?<=  )      - group, behind: should appear before the match; will not be included into it
[A-Za-z]     - one letter (Formula1)
[A-Za-z0-9]* - letters or digits, zero or more
\s*          - whitespaces (spaces, tabultalions) - zero or more

匹配

[A-Z0-9]{2,3} - Capital letters or digits from 2 to 3 characters 

最后我们应该看看 向前地 为了找出右括号:

(?= ) - group, ahead: should appear before the match; will not be included into it
\s*   - zero or more whitespaces (spaces, tabulations etc)      
\)   - closing parenthesis (escaped)

合并,我们有

(?<=[A-Za-z][A-Za-z0-9]*\s*\(\s*) -- Behind:
                                  --   Letter, zero or more letters or digits, parenthesis 

[A-Z0-9]{2,3}                     -- Value to match (2..3 capital letters or digits)

(?=\s*\)                          -- Ahead: 
                                  --   Closing parenthesis 

(?<=[A-Za-z][A-Za-z0-9]*\s*\(\s*)[A-z0-9]{2,3}(?=\s*\)

看到了吗 https://www.regular-expressions.info/lookaround.html 有关详细信息

C级# 代码:

string source = @"Swipe(YN1) + Avg(DNA) * 0.5";
string argument = "calculate";  

string result = Regex.Replace(
    source, 
  @"(?<=[A-Za-z][A-Za-z0-9]*\s*\(\s*)[A-Z0-9]{2,3}(?=\s*\))", 
    match => match.Value + $", {argument}");

Console.Write(result);

Swipe(YN1, calculate) + Avg(DNA, calculate) * 0.5