C#教程之C#判断某程序是否运行的方法

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C#教程之C#判断某程序是否运行的方法

本文实例讲述了C#判断某程序是否运行的方法，分享给大家供大家参考。

具体实现方法如下：

[DllImport("user32.dll")]

private static extern bool

SetForegroundWindow(IntPtr hWnd);

[DllImport("user32.dll")]

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

[DllImport("user32.dll")]

private static extern bool IsIconic(IntPtr hWnd);

// 消息函数

[DllImport("user32.dll", EntryPoint = "PostMessageA")]

public static extern bool PostMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

[DllImport("user32.dll")]

public static extern IntPtr FindWindow(string strclassName, string strWindowName);

[DllImportAttribute("user32.dll")]

public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

public const int WM_SYSCOMMAND = 0x0112;

public const int SC_MAXIMIZE = 0xF030;

private string exeName = "SaoMiaoApp";

public void SetForm()

{

  Process[] processes = Process.GetProcessesByName(exeName);

  if (processes.Length > 0)

  {

 IntPtr hWnd = processes[0].MainWindowHandle;

 if (IsIconic(hWnd))

   ShowWindowAsync(hWnd, 9);// 9就是SW_RESTORE标志，表示还原窗体

 //SendMessage(hWnd, WM_SYSCOMMAND, SC_MAXIMIZE, 0);

 SetForegroundWindow(hWnd);

  }

  else

  {

 Process.Start(exeName + ".exe");

  }

}

希望本文所述对大家的C#程序设计有所帮助。

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