C#实现只许一个实例运行(使用mutex类)
在google上搜了很多(全是中文的),找了半天也没有解决问题。
最后没办法,只能搜索e版的了。于是找到了下面的答案。
metex是mutual exclusion 的缩写,
完整的实现参照一下:
![](https://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif)
using System.Runtime.InteropServices;
namespace TST.SINGLE
{
public class TSTPGM
{
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool SetForegroundWindow(IntPtr hWnd);
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
bool createdNew = true;
using (Mutex mutex = new Mutex(true, "MyApplicationName", out createdNew))
{
if (createdNew)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MainForm());
}
else
{
Process current = Process.GetCurrentProcess();
foreach (Process process in Process.GetProcessesByName(current.ProcessName))
{
if (process.Id != current.Id)
{
SetForegroundWindow(process.MainWindowHandle);
break;
}
}
}
}
}
}
}