private void button_Start_Click(object sender, EventArgs e)
        {
            string lastError = string.Empty;

            if (!EncryptionHandler.ConvertFileToFilterDriverAwareEncryptFile(textBox_FileName.Text, textBox_PassPhrase.Text, out lastError))
            {
                MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
                MessageBox.Show("Process share encrypted file failed with error:" + lastError, "Process share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Error);

                return;
            }
            else
            {
                MessageBoxHelper.PrepToCenterMessageBoxOnForm(this);
                MessageBox.Show("Process share encrypted file succeeded.", "Process share encrypted file", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }