private void textBox_CipherText_TextChanged(object sender, TextChangedEventArgs e)
{
if (textBox_CipherText.IsFocused)
{
try {
textBox_ClearText.Text = Base64Translator.DecryptBase64(textBox_CipherText.Text, GetSelectedEncoding());
textBox_ClearText.IsEnabled = true;
} catch (FormatException) {
textBox_ClearText.Text = "Invalid cipher text.";
textBox_ClearText.IsEnabled = false;
}
}
}
