Lancer et integrer un .exe dans une appli .net ?

Salut, si tu connais un peu l'API Win32 je pense que c'est possible, voila un point de départ ( beaucoup de code mais tu as juste à utiliser la methode ILoveNotepad ).

[ DllImport( "user32.dll", SetLastError = true ) ]
private static extern IntPtr SetParent( IntPtr hWndChild, IntPtr hWndNewParent );

[ DllImport( "user32.dll", SetLastError = true ) ] // 32 bits.
private static extern int GetWindowLong( IntPtr hWnd, int nIndex );

[ DllImport( "user32.dll", SetLastError = true ) ] // 64 bits.
private static extern IntPtr GetWindowLongPtr( IntPtr hWnd, int nIndex );

[ DllImport( "user32.dll", SetLastError = true ) ] // 32 bits.
private static extern int SetWindowLong( IntPtr hWnd, int nIndex, int dwNewLong );

[ DllImport( "user32.dll", SetLastError = true ) ] // 64 bits.
private static extern IntPtr SetWindowLongPtr( IntPtr hWnd, int nIndex, IntPtr dwNewLong );

private const int WS_POPUP = unchecked( ( int )0x80000000 );
private const int WS_CHILD = 0x40000000;
private const int GWL_STYLE = -16;

private void ILoveNotepad( )
{
    Process p = Process.Start( "notepad.exe" );
    p.WaitForInputIdle( 2000 );
    IntPtr hWnd = p.MainWindowHandle;
    p.Close( );
    p = null;

    int styles = ( int )GetStyles( hWnd );
    styles &= ~WS_POPUP;
    styles |= WS_CHILD;
    SetStyles( hWnd, ( IntPtr )styles );

    SetParent( hWnd, this.Handle );

    // WM_CHANGEUISTATE
    // WM_UPDATEUISTATE

    // etc..
}

private IntPtr GetStyles( IntPtr hWnd )
{
    if ( IntPtr.Size == 8 ) // 64 bits.
        return GetWindowLongPtr( hWnd, GWL_STYLE );
    else // 32bits
        return ( IntPtr )GetWindowLong( hWnd, GWL_STYLE );
}

private void SetStyles( IntPtr hWnd, IntPtr styles )
{
    if ( IntPtr.Size == 8 ) // 64 bits.
        SetWindowLongPtr( hWnd, GWL_STYLE, styles );
    else // 32 bits.
        SetWindowLong( hWnd, GWL_STYLE, ( int )styles );
}