C#下面能產生每秒65535個我無重復ID,但是毫無規則可言。
1 PRivate static int id = 0; 2 3 private static int serverID = 1; 4 5 /// <summary> 6 /// 下面這段代碼在一秒內,只能生產 65535 個操過了生產是會重復ID 的 7 /// </summary> 8 /// <returns></returns> 9 public static long getId()10 {11 lock (typeof(string))12 {13 id += 1;14 return (serverID & 0xFFFF) << 48 | (DateTime.Now.CurrentTimeMillis() / 1000L & 0xFFFFFFFF) << 16 | id & 0xFFFF;15 }16 }
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C#程序單例模式。某些非web程序,需要驗證單例模式,只能開啟一個客戶端。
目前我曉得的方式調用win32API,
static Mutex mutex; /// <summary> /// 單例模式 /// </summary> /// <param name="strMutex">系統互斥名,任意設置標識就行</param> static public void Singleton(string strMutex = "SzExtensions") { bool createdNew; //系統能夠識別有名稱的互斥,因此可以使用它禁止應用程序啟動兩次 //第二個參數可以設置為產品的名稱:application.ProductName //每次啟動應用程序,都會驗證名稱為SingletonWinAppMutex的互斥是否存在 mutex = new Mutex(true, strMutex, out createdNew); //如果已運行,則在前端顯示 //createdNew == false,說明程序已運行 if (!createdNew) { Process instance = GetExistProcess(); //如果程序已經啟動,設置為前端顯示 if (instance != null) { SetForegroud(instance); } //退出當前程序 System.Environment.Exit(0); } } /// <summary> /// 查看程序是否已經運行 /// </summary> /// <returns></returns> static Process GetExistProcess() { Process currentProcess = Process.GetCurrentProcess(); foreach (Process process in Process.GetProcessesByName(currentProcess.ProcessName)) { if ((process.Id != currentProcess.Id) && (Assembly.GetExecutingAssembly().Location == currentProcess.MainModule.FileName)) { return process; } } return null; } /// <summary> /// 使程序前端顯示 /// </summary> /// <param name="instance"></param> static void SetForegroud(Process instance) { IntPtr mainFormHandle = instance.MainWindowHandle; if (mainFormHandle != IntPtr.Zero) { ShowWindowAsync(mainFormHandle, 1); SetForegroundWindow(mainFormHandle); } }程序啟動的時候創建一個系統互斥量,設置一個互斥量又好名稱就可以。防止程序第二次啟動。
在開發WPF或者WF程序的時候,為了方便測試需要打印一些臨時數據。但是打印是一個非常麻煩的事情,不像控制臺程序那樣可以直接輸出。非常便利。那么我們WPF或者WF程序可不可以以打開控制臺輸出呢?
網上查詢了一下可以調用win32API實現打開控制臺。其實也就是打開程序的一個輸入和輸出流而已。
[DllImport("User32.dll")] private static extern bool SetForegroundWindow(IntPtr hWnd); [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)] public static extern IntPtr GetForegroundWindow(); [MethodImpl(MethodImplOptions.ForwardRef), DllImport("user32.dll")] private static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [MethodImpl(MethodImplOptions.ForwardRef), DllImport("kernel32.dll")] private static extern bool FreeConsole(); [MethodImpl(MethodImplOptions.ForwardRef), DllImport("Kernel32.dll")] private static extern bool AllocConsole(); [MethodImpl(MethodImplOptions.ForwardRef), DllImport("user32.dll")] private static extern IntPtr GetSystemMenu(IntPtr hWnd, IntPtr bRevert); [MethodImpl(MethodImplOptions.ForwardRef), DllImport("user32.dll")] private static extern bool ShowWindowAsync(IntPtr hwind, int cmdShow); [MethodImpl(MethodImplOptions.ForwardRef), DllImport("user32.dll")] private static extern IntPtr RemoveMenu(IntPtr hMenu, uint uPosition, uint uFlags); private static string ConsoleTitle = string.Empty; private static bool flag_console = false; private static System.Timers.Timer Console_Timer; /// <summary> /// 關閉/隱藏控制臺 窗體 /// </summary> static public void Console_Hide() { if (Console_Timer != null) { Console_Timer.Stop(); } flag_console = false; FreeConsole(); } /// <summary> /// 顯示控制臺,一旦顯示就不會再調用第二次 /// </summary> /// <param name="title">顯示的標題</param> /// <param name="withCloseBox">是否移除關閉按鈕,默認值:false 顯示</param> /// <param name="isShowThreadCount">在控制臺顯示線程數量,默認值:true 顯示</param> static public void Console_Show(string title, [MarshalAs(UnmanagedType.U1)] bool withCloseBox, [MarshalAs(UnmanagedType.U1)] bool isShowThreadCount) { //檢測flag_console,防止調用兩次 //直接用win32api //順便移除窗口 if (!flag_console) { flag_console = true; AllocConsole(); Console.Title = title; if (withCloseBox) { RemoveMenu(); } if (isShowThreadCount) { ShowThreadCount(title); } else { Console.Title = title; } } } /// <summary> /// 移除關閉按鈕 /// </summary> static void RemoveMenu() { IntPtr mainFormHandle = GetForegroundWindow(); RemoveMenu(GetSystemMenu(mainFormHandle, IntPtr.Zero), 0xf060, 0); } /// <summary> /// 在控制臺title顯示線程量 /// </summary> /// <param name="title"></param> public static void ShowThreadCount(string title) { ConsoleTitle = title; Console_Timer = new System.Timers.Timer(200); Console_Timer.Elapsed += (obj, e) => { int thrads = Process.GetCurrentProcess().Threads.Count; int runthreads = 0; foreach (ProcessThread item in Process.GetCurrentProcess().Threads) if (item.ThreadState == System.Diagnostics.ThreadState.Running) runthreads++; long mem = System.Environment.WorkingSet / 1024 / 1024; Console.Title = string.Format("{0} -> 當前內存占用 -> {3} MB -> 當前線程量 -> {1} -> 當前活動線程: -> {2}", ConsoleTitle, thrads, runthreads, mem); }; Console_Timer.Start(); }在此加入了,控制臺的打開和關閉功能性輔助代碼。并且加入了控制臺標題查看內存和線程使用情況。
還有一個非常方便的方式打開WPF和WF控制臺輸入輸出流的方式。只能臨時使用的辦法。那就是右鍵項目屬性,選擇更改項目類型,把windows應用程序改為控制臺程序。可以實現,WPF和WF程序打開控制輸入輸出流。

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1 /** 2 * 3 * @author 失足程序員 4 * @Blog http://m.survivalescaperooms.com/ty408/ 5 * @mail 492794628@QQ.com 6 * @phone 13882122019 7 * 8 */ 9 namespace Sz10 {11 /// <summary>12 /// 線程模型13 /// </summary> 14 internal class ThreadModel15 {16 public bool IsStop = false;17 /// <summary>18 /// ID19 /// </summary>20 public int ID;21 22 static int StaticID = 0;23 24 public ThreadModel(string name)25 {26 lock (typeof(ThreadModel))27 {28 StaticID++;29 }30 ID = StaticID;31 System.Threading.Thread thread = new System.Threading.Thread(new System.Threading.ThreadStart(Run));32 thread.Name = name;33 thread.IsBackground = true;34 thread.Start();35 }36 37 /// <summary>38 /// 任務隊列39 /// </summary>40 protected System.Collections.Concurrent.ConcurrentQueue<TaskBase> taskQueue = new System.Collections.Concurrent.ConcurrentQueue<TaskBase>();41 42 /// <summary>43 /// 加入任務44 /// </summary>45 /// <param name="t"></param>46 public virtual void AddTask(TaskBase t)47 {48 taskQueue.Enqueue(t);49 ///防止線程正在阻塞時添加進入了新任務50 are.Set();51 }52 53 //通知一個或多個正在等待的線程已發生事件54 protected ManualResetEvent are = new ManualResetEvent(false);55 56 protected virtual void Run()57 {58 while (true)59 {60 while (!taskQueue.IsEmpty)61 {62 TaskBase t = null;63 if (!taskQueue.IsEmpty && taskQueue.TryDequeue(out
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