[DllImport("user32.dll")]
    static extern bool SetForegroundWindow(IntPtr hWnd);
    static void Main(string[] args)
    {
       #region Copy From Web
       Process pc = Process.Start("iexplore.exe", "http://stackoverflow.com/questions/11512373/findwindow-and-setforegroundwindow-alternatives");                     pc.WaitForInputIdle();
       // Here i send the keys CTRL + A to select all  and CTRL + C to copy on the webbrowser
       SendKeys.SendWait("^a^c");
       #endregion

        #region Past In Notpade
        Process n = Process.Start("notepad.exe");enter code here
        n.WaitForInputIdle();
        // Here i send the keys CTRL + V to paste on the notpade
        SendKeys.SendWait("^V");
        #endregion
    }