C# 串口初始化方法之一。完整例程中定義了多個串口，程序運行初始會從配置文件加載串口設置並批量初始化串口。

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using System.Text.RegularExpressions;
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//Example, InitPort(gdmPort, 2, "115200,N,8,1")
private void InitPort( System.IO.Ports.SerialPort _seriPort, int _com, string _setting)
{
    string strBuf = string.Empty;

    _seriPort.PortName = "COM" + _com; //設置 COM 口
    strBuf = Regex.Match(_setting, @"^\d+(?=,)").ToString().Trim();
    if (strBuf != string.Empty)
    {
        _seriPort.BaudRate = Convert.ToInt32(strBuf); //設置 BaudRate
    }
    strBuf = Regex.Match(_setting, @"(?<=^\d+,)[a-z A-Z]+").ToString().ToUpper().Trim();
    if (strBuf != string.Empty) //設置 Parity
    {
        switch (strBuf)
        {
            case "E":
                _seriPort.Parity = System.IO.Ports.Parity.Even;
                break;
            case "M":
                _seriPort.Parity = System.IO.Ports.Parity.Mark;
                break;
            case "N":
                _seriPort.Parity = System.IO.Ports.Parity.None;
                break;
            case "O":
                _seriPort.Parity = System.IO.Ports.Parity.Odd;
                break;
            case "S":
                _seriPort.Parity = System.IO.Ports.Parity.Space;
                break;
            default:
                break;
        }
    }
    strBuf = Regex.Match(_setting, @"(?<=[a-z A-Z]+,)\d+").ToString().Trim();
    if (strBuf != string.Empty)
    {
        _seriPort.DataBits = Convert.ToInt32(strBuf); //設置 DataBits
    }
    strBuf = Regex.Match(_setting, @"(?<=,)[0-9 \.]+$").ToString().Trim();
    if (strBuf != string.Empty) //設置 StopBits
    {
        switch (strBuf)
        {
            case "0":
                _seriPort.StopBits = System.IO.Ports.StopBits.None;
                break;
            case "1":
                _seriPort.StopBits = System.IO.Ports.StopBits.One;
                break;
            case "1.5":
                _seriPort.StopBits = System.IO.Ports.StopBits.OnePointFive;
                break;
            case "2":
                _seriPort.StopBits = System.IO.Ports.StopBits.Two;
                break;
            default:
                //SerPort.StopBits = System.IO.Ports.StopBits.One;
                break;
        }
    }
}

本文出自 “firswof” 博客，請務必保留此出處http://firswof.blog.51cto.com/9362961/1983941

C# 串口初始化