private void button3_Click(object sender, EventArgs e)
        {
            encryptDecrypt.Service service = new encryptDecrypt.Service();

            if (textBox2.Text.Length > 0)
            {
                String EncryptedText = service.Encrypt(textBox2.Text);
                textBox3.Text = EncryptedText;
            }
            else
            {
                MessageBox.Show("Enter String to Encrypt \nEmpty String not allowed");
            }
        }
        private void button4_Click(object sender, EventArgs e)
        {
            try
            {
                if (textBox2.Text.Length > 0)
                {
                    encryptDecrypt.Service service = new encryptDecrypt.Service();

                    String DecryptedText = service.Decrypt(textBox2.Text);
                    textBox4.Text = DecryptedText;
                }
                else
                {
                    MessageBox.Show("Enter String to Decrypt \nEmpty String not allowed");
                }
            }catch (Exception exception)
            {
                MessageBox.Show("Can Only Decrypt Encrypted Text\n More Details:\n" + exception.Message);
            }
        }