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。