private void Shift_Click(object sender, EventArgs e) { CaesarCipher plainToCipher = new CaesarCipher(); if (mode == true) { try { cipherText.Text = plainToCipher.CipherAllCharacter(Convert.ToInt16(shiftText.Text), plainText.Text); } catch (Exception execeptionOne) { MessageBox.Show("Please fill in all blanks.\n-----------------------\n" + execeptionOne.ToString()); } } else { try { cipherText.Text = plainToCipher.CipherAlphabetOnly(Convert.ToInt16(shiftText.Text), plainText.Text); } catch (Exception execeptionTwo) { MessageBox.Show("Please fill in all blanks.\n-----------------------\n" + execeptionTwo.ToString()); } } }