private static void FnFileProcess() { StreamReader reader = new StreamReader(@"d:1500.txt", Encoding.GetEncoding("GB2312")); StreamWriter writerEn = new StreamWriter(@"d:English.txt", false, Encoding.UTF8, 1024); StreamWriter writerCh = new StreamWriter(@"d:Chinese.txt", false, Encoding.UTF8, 1024); try { int i = 1; for (String line = reader.ReadLine(); line != null; line = reader.ReadLine()) { if (i % 2 == 1) { writerEn.WriteLine(line); } else { writerCh.WriteLine(line); } i++; } Console.WriteLine(i + "tOK"); } catch (Exception ex) { Console.WriteLine(ex.ToString()); } finally { //不清空缓冲区，得到的文件总是少几十行 writerEn.Flush(); writerCh.Flush(); } }