强制应用程序 winform c# 的一个实例

Question

Without using a global mutex lock in an application, is there any safe way to ensure only one instance of an application is running on a system? I have found out that bugs and errors that occur during an applications lifetime in memory can lead to many problems within a system, especially if pared with a global mutex lock. Any suggestions would be much appreciated.

Thanks for reading.

Answer 1

You can use Mutex to ensure a single instance app. Put the following code in the Main function of your WinForms app:

static class Program
{
    static Mutex mutex = new Mutex(true, "<some_guid_or_unique_name>");

    [STAThread]
    static void Main()
    {
        if (mutex.WaitOne(TimeSpan.Zero, true))
        {
           // do the app code
           Application.Run();

           // release mutex after the form is closed.
           mutex.ReleaseMutex();
           mutex.Dispose();
        }
    }
}