Starting Project with Windows and Minimizing to System Tray

private void SetStartup2()
{
    try
    {
        string keys =
        @"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run";
        string value = "CopyThat";

        if (startWithWindowsCheckBox.Checked)
        {
            if (Registry.GetValue(keys, value, null) == null)
            {
                // if key doesn't exist
                using (RegistryKey key =
                Registry.CurrentUser.OpenSubKey
                ("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true))
                {
                    key.SetValue("CopyThat", (Application.ExecutablePath));
                    key.Dispose();
                    key.Flush();
                }
            }
        }
        else
        {
            if (Registry.GetValue(keys, value, null) != null)
            {
                // if key doesn't exist
                using (RegistryKey key =
                Registry.CurrentUser.OpenSubKey
                ("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true))
                {
                    key.DeleteValue("CopyThat", false);
                    key.Dispose();
                    key.Flush();
                }
            }
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }
}