C# 实现文件文本的正则表达式查询

 1        static void QueryWithRegEx()
 2         {
 3             string startFolder = @"c:\program files\Microsoft Visual Studio 9.0\";
 4             IEnumerable<FileInfo> fileList = GetFiles(startFolder);
 5 
 6             Regex searchTerm = new Regex(@"Visual (Basic|C#|C\+\+|J#|SourceSafe|Studio)");
 7 
 8             var queryMatchingFiles = from file in fileList
 9                                      where file.Extension == ".htm"
10                                      let fileText = System.IO.File.ReadAllText(file.FullName)
11                                      let matches = searchTerm.Matches(fileText)
12                                      where matches.Count > 0
13                                      select new
14                                      {
15                                          name = file.FullName,
16                                          matchedValues = from System.Text.RegularExpressions.Match match in matches
17                                                          select match.Value
18                                      };
19         }