How to set focus back to form after opening up a process (Notepad)?

Question

I open up a notepad from my program using Process.Start() but the new opened notepad covers the screen. But I do want my application to maintain its focus.

Answer 1

I had the same problem, i eventually wound up with programmatically calling alt-tab:

[DllImport("user32.dll")]
static extern bool PostMessage(IntPtr hWnd, UInt32 Msg, int wParam, int lParam);

private void alttab()
{
     uint WM_SYSCOMMAND = 0x0112;
     int SC_PREVWINDOW = 0xF050;            

     PostMessage(Process.GetCurrentProcess().MainWindowHandle, WM_SYSCOMMAND, SC_PREVWINDOW, 0);
}

//EDIT: You should use process.MainWindowHandle instead ofcourse