Question

When I call the Application.Restart() method, the error comes up that detects whether the application is currently running. Is there anyway around this?

    static void Main(string[] args)
    {
        string proc = Process.GetCurrentProcess().ProcessName;
        Process[] processes = Process.GetProcessesByName(proc);
        if (processes.Length > 1)
        {
            MessageBox.Show("Program is already running.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        else
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }

Answer 1

The most effective way to do this is to inherit from VB.Net’s WindowsFormsApplicationBase class, which can also be used in C#, and set the IsSingleInstance property to true. This uses a mutex and will continue working if the EXE file is renamed.