private void Stat(List<DwNumber> allNumbers, string rule, string dbName) { string fileName = string.Format("Dw{0}_{1}_{2}.txt", dbName.ToString(), rule, "Peroid1008Count"); string filePath = string.Empty;//string.Format("{0}\\{1}", this._rootPath, fileName); StreamWriter writer = new StreamWriter(filePath, false, Encoding.UTF8); for (int i = 0; i < allNumbers.Count; i++) { if (i + 1008 >= allNumbers.Count) break; var group = allNumbers.GetRange(i, 1008).GroupBy(x => x.P2); foreach (var g in group) { string line = string.Format("{0},{1},{2}", allNumbers[i].P, g.Key, g.Count()); writer.WriteLine(line); } } writer.Close(); }