C# (CSharp) COM.Equals示例

示例#1

        private void button2_Click(object sender, EventArgs e)
        {
            string COM;

            COM = comboBox1.Text;
            if (COM.Equals(""))
            {
                MessageBox.Show("포트번호를 입력해주세요");
            }
            else
            {
                serialPort = new SerialPort("COM" + COM, 9600, Parity.None, 8, StopBits.One);
                try
                {
                    serialPort.Open();
                }catch (IOException)
                {
                    MessageBox.Show("Not Connect!");
                    return;
                }
                MessageBox.Show("Successfully Connect!");
                serialPort.Close();
            }
        }