Force Single Instance with Mutex handling restart application

Question

I have a problem when i want use mutex to force single instance of my program.

I a winform App with a WebBrowser Control. I need to autorestart if certain conditions ar

Answer 1

Try using try..finally for managing the Mutex.

I usually use this approach. Worked well in combination with Application.Restart().

    private const string ApplicationMutexName = "";

    /// 

    /// The main entry point for the application.
    /// 
    [STAThread]
    public static void Main()
    {
        RunApplicationPreservingSingleInstance();
    }

    private static void RunApplicationPreservingSingleInstance()
    {
        Mutex mutex = AcquireMutex();
        if (mutex == null)
        {
            return;
        }

        try
        {
            RunApplication();
        }
        finally
        {
            mutex.ReleaseMutex();
        }
    }

    private static Mutex AcquireMutex()
    {
        Mutex appGlobalMutex = new Mutex(false, ApplicationMutexName);
        if (!appGlobalMutex.WaitOne(3000))
        {
            return null;
        }
        return appGlobalMutex;
    }

    private static void RunApplication()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new MainForm());
    }