Checks whether the current exec is already running (user agnostic)

IsRunning.cs

public static bool IsRunning()
{
    var proc = Assembly.GetExecutingAssembly().GetName().Name;

    var processes = Process.GetProcesses().ToList();
    var activeProcs = processes.Where(x => x.ProcessName.ToLower() == proc).ToList();

    return activeProcs.Count > 1;
}