程序开着,再次启动相同程序的时候,怎么检查此程序已经运行?
是要查进程里,还是有更好的方法?求几行代码!!! --------------------编程问答-------------------- 帮顶下…… --------------------编程问答-------------------- 沙发有分,^_^! --------------------编程问答-------------------- http://www.bitscn.com/dotnet/c/200701/88887.html --------------------编程问答-------------------- -.-!不是吧,要写这么多类???
我还以为几行代码就能搞定了呢!!! --------------------编程问答-------------------- #region 单实例运行
Process pCurrentProcess = Process.GetCurrentProcess();
Process[] pProcessArray = Process.GetProcessesByName(pCurrentProcess.ProcessName);
foreach (Process pProcess in pProcessArray)
{
if (pProcess.Id != pCurrentProcess.Id)
{
if (pProcess.MainModule.FileName == pCurrentProcess.MainModule.FileName)
{
MessageBox.Show("该程序已经运行!", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
}
}
#endregion --------------------编程问答-------------------- using System;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading;
namespace SharedLib
{
/// <summary>
/// 只启动一个应用程序实例控制类
/// </summary>
public static class SingleInstance
{
private const int WS_SHOWNORMAL = 1;
[DllImport("User32.dll")]
private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
[DllImport("User32.dll")]
private static extern bool SetForegroundWindow(IntPtr hWnd);
//标志文件名称
private static string runFlagFullname = null;
//声明同步基元
private static Mutex mutex = null;
/// <summary>
/// static Constructor
/// </summary>
static SingleInstance()
{
}
#region api实现
/// <summary>
/// 获取应用程序进程实例,如果没有匹配进程，返回Null
/// </summary>
/// <returns>返回当前Process实例</returns>
public static Process GetRunningInstance()
{
Process currentProcess = Process.GetCurrentProcess();//获取当前进程
//获取当前运行程序完全限定名
string currentFileName = currentProcess.MainModule.FileName;
//获取进程名为ProcessName的Process数组。
Process[] processes = Process.GetProcessesByName(currentProcess.ProcessName);
//遍历有相同进程名称正在运行的进程
foreach (Process process in processes)
{
if (process.MainModule.FileName == currentFileName)
{
if (process.Id != currentProcess.Id)//根据进程ID排除当前进程
return process;//返回已运行的进程实例
}
}
return null;
}
/// <summary>
/// 获取应用程序句柄，设置应用程序前台运行，并返回bool值
/// </summary>
public static bool HandleRunningInstance(Process instance)
{
//确保窗口没有被最小化或最大化
ShowWindowAsync(instance.MainWindowHandle, WS_SHOWNORMAL);
//设置真实例程为foreground window
return SetForegroundWindow(instance.MainWindowHandle);
}
/// <summary>
/// 获取窗口句柄，设置应用程序前台运行，并返回bool值，重载方法
/// </summary>
/// <returns></returns>
public static bool HandleRunningInstance()
{
Process p = GetRunningInstance();
if (p != null)
{
HandleRunningInstance(p);
return true;
}
return false;
}
#endregion
#region Mutex实现
/// <summary>
/// 创建应用程序进程Mutex
/// </summary>
/// <returns>返回创建结果，true表示创建成功，false创建失败。</returns>
public static bool CreateMutex()
{
return CreateMutex(Assembly.GetEntryAssembly().FullName);
}
/// <summary>
/// 创建应用程序进程Mutex
/// </summary>
/// <param name="name">Mutex名称</param>
/// <returns>返回创建结果，true表示创建成功，false创建失败。</returns>
public static bool CreateMutex(string name)
{
bool result = false;
mutex = new Mutex(true, name, out result);
return result;
}
/// <summary>
/// 释放Mutex
/// </summary>
public static void ReleaseMutex()
{
if (mutex != null)
{
mutex.Close();
}
}
#endregion
#region 设置标志实现
/// <summary>
/// 初始化程序运行标志，如果设置成功，返回true，已经设置返回false，设置失败将抛出异常
/// </summary>
/// <returns>返回设置结果</returns>
public static bool InitRunFlag()
{
if (File.Exists(RunFlag))
{
return false;
}
using (FileStream fs = new FileStream(RunFlag, FileMode.Create))
{
}
return true;
}
/// <summary>
/// 释放初始化程序运行标志，如果释放失败将抛出异常
/// </summary>
public static void DisposeRunFlag()
{
if (File.Exists(RunFlag))
{
File.Delete(RunFlag);
}
}
/// <summary>
/// 获取或设置程序运行标志，必须符合Windows文件命名规范
/// 这里实现生成临时文件为依据，如果修改成设置注册表，那就不需要符合文件命名规范。
/// </summary>
public static string RunFlag
{
get
{
if (runFlagFullname == null)
{
string assemblyFullName = Assembly.GetEntryAssembly().FullName;
//CommonApplicationData：//"C:\\Documents and Settings\\All Users\\Application Data"
string path = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
//"C:\\Program Files\\Common Files"
//string path = Environment.GetFolderPath(Environment.SpecialFolder.CommonProgramFiles);
runFlagFullname = Path.Combine(path, assemblyFullName);
}
return runFlagFullname;
}
set
{
runFlagFullname = value;
}
}
#endregion
}
} --------------------编程问答-------------------- 路过 --------------------编程问答-------------------- 再顶一下，我也要用！求最简单的解…… --------------------编程问答-------------------- 5楼可行，把retrun该为 Environment.Exit(0)就可以了，楼主有没有更好的办法，交流下…… --------------------编程问答-------------------- 6楼也正确，更强大！5楼只是6楼的一部分！楼主可以结贴了！ --------------------编程问答-------------------- 用个投机取巧的方法，如果只是判断是否程序再次运行系统信号量可以达到目的
[DllImport("kernel32.dll")]
public static extern IntPtr CreateEvent(IntPtr attrib, bool autoReset, bool initialState, string name);
public static IntPtr CreateEvent(bool autoReset, bool initialState, string name)
{
return CreateEvent(IntPtr.Zero, !autoReset, initialState, name);
}
[DllImport("kernel32.dll")]
private static extern IntPtr OpenEvent(int access, bool inheri, string name);
public static IntPtr OpenEvent(string name)
{
return OpenEvent(2031619, false, name);
}
[DllImport("kernel32.dll")]
public static extern bool CloseHandle(IntPtr handle);
static void Main(string[] args)
{
string identity="PROCIDENTITY";
IntPtr evt = OpenEvent(identity);
if (evt != IntPtr.Zero)
{
Console.WriteLine("程序实例已经运行");
Console.ReadLine();
return;
}
evt = CreateEvent(false, true, identity);
Console.WriteLine("RUNNING, PRESS ENTER TO EXIT");
Console.ReadLine();
CloseHandle(evt);
}
补充：.NET技术 , C#
