C#

[System.Runtime.InteropServices.DllImport("user32.dll")]
public static extern int BringWindowToTop(IntPtr hwnd);

public IntPtr HWND_TOPMOST =(IntPtr)(-1);
public IntPtr HWND_NOTOPMOST =(IntPtr)(-2);

    //Your method
    System.Diagnostics.ProcessStartInfo psi;
    psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Maximized;
    psi.FileName = "???.exe";
    using(System.Diagnostics.Process process = new System.Diagnostics.Process())
    {
        process.Start(psi);
        process.WaitForInputIdle();
        BringWindowToTop(process.Handle);
    }