获取正则表达式的次数与转义符号

Question

我很感激非工作正则表达式的帮助（不适用于特殊符号％工作或$）

public System.Tuple<string, string> GetParts(string str, string beginMark, string endMark) 
    { 
     var pattern = 
      new Regex(beginMark + @"(?<val>.*?)" + endMark, 
       RegexOptions.Compiled | 
       RegexOptions.Singleline); 

     return (from Match match in pattern.Matches(str) 
       where match.Success 
       select new Tuple(
        match.Value, 
        match.Groups["val"].Value)) 
       .ToList(); 
    } 

调用方法：

string input = @"%sometext%\another text"; 
string replacedValue = "AAA"; 
var occurrences = GetPart(input, @"(%", ")"); 
foreach (var occurrence in occurrences) 
{ 
    Console.WriteLine(occurrence.Item1 + Environment.NewLine); 
    Console.WriteLine(occurrence.Item2 + Environment.NewLine); 
    // replace 
    onsole.WriteLine(input.Replace(occurrence.Item1, replacedValue) + Environment.NewLine); 
} 

预期输出：

％sometext％

sometext

AAA \ another text

Answer 1

您需要转义符号。尝试改变

new Regex(beginMark + @"(?<val>.*?)" + endMark, 

到

new Regex(Regex.Escape(beginMark) + @"(?<val>.*?)" + Regex.Escape(endMark),