how you can terminate a process that executed infinitly without using thread

foreach (Process process in System.Diagnostics.Process.GetProcessesByName("myapp"))
{
    try
    {
        p.Kill();
        p.WaitForExit();
    }
    catch (Win32Exception w32ex)
    {
        // process can't be terminated
    }
    catch (InvalidOperationException ioex)
    {
        // process already exited
    }
    catch (Exception ex)
    {
        // catch-all for any other exception that might occur
    }
}