Question

I have the following function:

private void TakeOverAllScreens()
    {
        int i = 0;
        foreach (Screen s in Screen.AllScreens)
        {

            if (s != Screen.PrimaryScreen)
            {
                i++;
               Process.Start(Application.ExecutablePath, "Screen|" + s.Bounds.X + "|" + s.Bounds.Y + "|" + i);
            }
        }
    }

As you can see it creates a separate instance of my application for each screen on the pc.

How can I create an exit function that closes all of them?
The function needs to work on any instance of the app, not just my “Main” instance.

Answer 1

You can terminate all processes with the same name:

var current = Process.GetCurrentProcess();
Process.GetProcessesByName(current.ProcessName)
    .Where(t => t.Id != current.Id)
    .ToList()
    .ForEach(t => t.Kill());

current.Kill();