static void Main(string[] args)
        {
            EventLog log = new EventLog("System");
            DateTime since = DateTime.Now.AddDays(-14); // 最近兩周

            var events = log.Entries
                .Cast<EventLogEntry>()
                .Where(e =>
                    (e.EventID == 6005 ||  // 開機(jī)
                     e.EventID == 6006 ||  // 正常關(guān)機(jī)
                     e.EventID == 6008 ||  // 異常關(guān)機(jī)
                     e.EventID == 1074)    // 用戶觸發(fā)關(guān)機(jī)
                    && e.TimeGenerated >= since
                )
                .OrderBy(e => e.TimeGenerated) // 按時(shí)間順序
                .ToList();

            Console.WriteLine("===== 最近兩周的開關(guān)機(jī)記錄 =====");

            // 統(tǒng)計(jì)變量
            int bootCount = 0, normalShutdown = 0, abnormalShutdown = 0, userShutdown = 0;

            foreach (var ev in events)
            {
                string type;
                switch (ev.EventID)
                {
                    case 6005:
                        type = "開機(jī) (系統(tǒng)啟動(dòng) - EventID 6005)";
                        bootCount++;
                        break;
                    case 6006:
                        type = "關(guān)機(jī) (正常關(guān)機(jī) - EventID 6006)";
                        normalShutdown++;
                        break;
                    case 6008:
                        type = "異常關(guān)機(jī) (異常關(guān)機(jī) - EventID 6008)";
                        abnormalShutdown++;
                        break;
                    case 1074:
                        type = "關(guān)機(jī) (用戶/程序觸發(fā) - EventID 1074)";
                        userShutdown++;
                        break;
                    default:
                        type = "其他事件";
                        break;
                }

                Console.WriteLine($"{ev.TimeGenerated:yyyy-MM-dd HH:mm:ss}  {type}");
            }

            Console.WriteLine("=================================");
            Console.WriteLine("===== 匯總統(tǒng)計(jì)（最近兩周） =====");
            Console.WriteLine($"開機(jī)次數(shù)：{bootCount}");
            Console.WriteLine($"正常關(guān)機(jī)次數(shù)：{normalShutdown}");
            Console.WriteLine($"異常關(guān)機(jī)次數(shù)：{abnormalShutdown}");
            Console.WriteLine($"用戶觸發(fā)關(guān)機(jī)次數(shù)：{userShutdown}");

            // 平均每天開機(jī)次數(shù)
            double avgBootPerDay = bootCount / 14.0;
            Console.WriteLine($"平均每天開機(jī)次數(shù)：{avgBootPerDay:F2}");

            Console.WriteLine("=================================");
            Console.WriteLine("按任意鍵退出...");
            Console.ReadKey();
        }