[C#]EXE執行檔單獨運行小技巧

[C#]EXE執行檔單獨運行小技巧

這個問題是最近討論區朋友問到的問題,把它記錄在我的Blog裡,如下：

EXE執行檔已經運行了，如果我再去運行同樣EXE檔時，新的程序不再運行，
而是將原來的EXE執行檔顯示在最前面，如果EXE執行檔是最小化的時候，先將它最大化後再顯示在最前面，
outlook2003，迅雷、金山詞霸2009就是這樣的效果。

網路上有一個很好的解法，如下(C#)：

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01	using System;

02	using System.Collections.Generic;

03	using System.Windows.Forms;

04	using System.Diagnostics;

05	using System.Runtime.InteropServices;

06	using System.Reflection;

07

08	namespace WindowsApplication3

09

{

10	static class Program

11

{

12	[STAThread]

13	static void Main()

14

{

15	//Get   the   running   instance.

16	Process instance = RunningInstance();

17	if (instance == null)

18

{

19	System.Windows.Forms.Application.EnableVisualStyles();

20	System.Windows.Forms.Application.DoEvents();

21

22	//There  isn't another instance, show our form.

23	Application.Run(new Form1());

24

}

25

else

26

{

27	//There is another instance of this process.

28	HandleRunningInstance(instance);

29

}

30

}

31

32	public static Process RunningInstance()

33

{

34	Process current = Process.GetCurrentProcess();

35	Process[] processes = Process.GetProcessesByName(current.ProcessName);

36

37	//Loop through  the running processes in with the same name

38	foreach (Process process in processes)

39

{

40	//Ignore   the   current   process

41	if (process.Id != current.Id)

42

{

43	//Make sure that the process is running from the exe file.

44	if (Assembly.GetExecutingAssembly().Location.Replace("/", "\\") == current.MainModule.FileName)

45

{

46	//Return   the   other   process   instance.

47	return process;

48

}

49

}

50

}

51	//No other instance was found, return null.

52	return null;

53

}

54

55	public static void HandleRunningInstance(Process instance)

56

{

57	//Make sure the window is not minimized or maximized

58	ShowWindowAsync(instance.MainWindowHandle, WS_SHOWNORMAL);

59	//Set the real intance to foreground window

60	SetForegroundWindow(instance.MainWindowHandle);

61

}

62

63	[DllImport("User32.dll")]

64	private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);

65	[DllImport("User32.dll")]

66	private static extern bool SetForegroundWindow(IntPtr hWnd);

67

68	//1:normal

69	//2:minimized

70	//3:maximized

71	private const int WS_SHOWNORMAL = 3;

72

}

73

}

 

參考網址：
http://www.blueshop.com.tw/board/show.asp?subcde=BRD20090213164530GII&fumcde=FUM20050124192253INM#BRD20090215180413HRO
http://www.cnblogs.com/ghostljj/archive/2007/10/02/912979.html