限制Win应用程序只运行一个实例

限制Win应用程序只运行一个实例

1、 限制Win应用程序只运行一个实例

bool bCreatedNew;
Mutex Mab = new Mutex(false, "AuctionBidMain", out bCreatedNew);
if (bCreatedNew)
{
Application.Run(new AuctionBidMainForm());
}
else
{
Application.Exit();
}

2、限制Win应用程序只运行一个实例，并且显示已运行的实例

using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Threading;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Reflection;

namespace AuctionBidMain
{
static class Program
{
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
[DllImport("User32.dll")]
private static extern bool ShowWindowAsync( IntPtr hWnd, int cmdShow);
[DllImport("User32.dll")]
private static extern bool SetForegroundWindow(IntPtr hWnd);
private const int WS_SHOWNORMAL = 1;
static void Main()
{

Process instance = RunningInstance();
if(instance==null)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new AuctionBidMainForm());
}
else
{
HandleRunningInstance(instance);
}
}
private static Process RunningInstance()
{
Process current = Process.GetCurrentProcess();
Process[] processes = Process.GetProcessesByName (current.ProcessName);
foreach (Process process in processes)
{
if (process.Id != current.Id)
{
if (Assembly.GetExecutingAssembly().Location.Replace("/", "//") ==
current.MainModule.FileName)
{

return process;
}
}
}
return null;
}

private static void HandleRunningInstance(Process instance)
{
ShowWindowAsync (instance.MainWindowHandle , WS_SHOWNORMAL);
SetForegroundWindow (instance.MainWindowHandle);
}

}
}