private void Decrypt_Click(object sender, RoutedEventArgs e) { var cipher = new CaesarCipher(); a = Int32.Parse(ATextBox.Text); b = Int32.Parse(BTextBox.Text); if (buttin1Clicked == true) { MessageBox.Show("Decrypted Text: ", cipher.Decrypt(Encrypted_text.Text, a, b, alfabet)); textbox.Text = cipher.Decrypt(Encrypted_text.Text, a, b, alfabet); } else if (button2Clicked == true) { c = Int32.Parse(CTextBox.Text); MessageBox.Show("Decrypted Text: ", cipher.Decrypt3d(Encrypted_text.Text, a, b, c, alfabet)); textbox.Text = cipher.Decrypt3d(Encrypted_text.Text, a, b, c, alfabet); } }