C# txt文档内容的事情

Regex rgx = new Regex(@"http://www.XXXX.com/file/\d{10}/");

 

string path = @"H:\", newTxt = @"H:\newTxt.txt";

 

            var query1 = from f in Directory.GetFiles(path)

                         let arr = File.ReadAllLines(f)

                         where f.EndsWith(".txt")

                         select new

                         {

                             content = (from c in arr                                        

                                        where rgx.IsMatch(c)

                                        select c)

                         };

 

 

            query1.ToList().ForEach(item => File.AppendAllLines(newTxt, item.content));

 

            foreach (var str in File.ReadAllLines(newTxt))

            {

                Console.WriteLine(str);

            }