/// <summary>
        /// 저장버튼
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSave_Click(object sender, EventArgs e)
        {
            string strSql = "";

            strSql  = @"
                        DELETE FROM FTP;";
            strSql += @"
                        INSERT INTO FTP ( 'IP', 'ID', 'PW')
                        VALUES ( '" + Network.Encrypt(txtAddress.Text) + @"',
                                 '" + Network.Encrypt(txtID.Text) + @"',
                                 '" + Network.Encrypt(txtPassWd.Text) + @"' );";

            int iresult = Network.ExecDB(strSql);

            if (iresult > 0)
            {
                MessageBox.Show("저장되었습니다. 재시작하세요");
            }
            else
            {
                MessageBox.Show("저장에 실패하였습니다.");
            }
        }