定义：
SerialPort ComDevice = new SerialPort();
在开启串口前 设置前后文本转换的字符编码
代码：ComDevice.Encoding = System.Text.Encoding.GetEncoding("GB2312");//此行非常重要 可解决接收中文乱码问题
接收代码：
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#region 串口相关操作 SerialPort ComDevice = new
SerialPort();
private
void
GetComList()
{
//获取可用串口列表
string[] ports = SerialPort.GetPortNames();
foreach
(string
port in
ports)
{
cbbComList.Properties.Items.Add(port);
}
if
(cbbComList.Properties.Items.Count > 0)
{
cbbComList.SelectedIndex = 0;
cbbComList.Enabled = true;
}
}
private
void
btnComOpen_Click(object
sender, EventArgs e)
{
if
(btnComOpen.Tag.ToString() == "0")
{
ComDevice.PortName = cbbComList.SelectedItem.ToString();
ComDevice.BaudRate = 115200;
ComDevice.Parity = (Parity)0;
ComDevice.DataBits = 8;
ComDevice.StopBits = (StopBits)1;
ComDevice.Encoding = System.Text.Encoding.GetEncoding("GB2312");//此行非常重要 可解决接收中文乱码问题
try
{
ComDevice.Open();
}
catch
(Exception ex)
{
MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
btnComOpen.Text = "关 闭";
btnComOpen.Tag = "1";
picComStatus.Image = Properties.Resources.green;
ComDevice.DataReceived += new
SerialDataReceivedEventHandler(ComDevice_DataReceived);
}
else
{
try
{
ComDevice.Close();
}
catch
(Exception ex)
{
MessageBox.Show(ex.Message, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
btnComOpen.Text = "打 开";
btnComOpen.Tag = "0";
picComStatus.Image = Properties.Resources.red;
}
}
/// <summary>
/// 发送数据 ---此代码在发送时都是转换成十六进制进行发送
/// </summary>
private
void
Send(string
cmd, bool
HexCmd)
{
if
(cmd == null)
return;
if
(cmd.Length > 0)
{
if
(ComDevice.IsOpen == true)
{
byte[] SendBytes = null;
string
SendData = cmd;
if
(HexCmd == true)
{ //16进制发送
try
{
//剔除所有空格
SendData = SendData.Replace(" ", "");
if
(SendData.Length % 2 == 1)
{//奇数个字符
SendData = SendData.Remove(SendData.Length - 1, 1);//去除末位字符
}
List<string> SendDataList = new
List<string>();
for
(int
i = 0; i < SendData.Length; i = i + 2)
{
SendDataList.Add(SendData.Substring(i, 2));
}
SendBytes = new
byte[SendDataList.Count];
for
(int
j = 0; j < SendBytes.Length; j++)
{
SendBytes[j] = (byte)(Convert.ToInt32(SendDataList[j], 16));
}
}
catch
{
XtraMessageBox.Show("请输入正确的16进制数据！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
System.Text.Encoding chs = System.Text.Encoding.GetEncoding("gb2312");
byte[] bytes = chs.GetBytes(cmd);
string
str = "";
for
(int
i = 0; i < bytes.Length; i++)
{
str += string.Format("{0:X2}", bytes[i]);
}
List<string> SendDataList = new
List<string>();
for
(int
i = 0; i < str.Length; i = i + 2)
{
SendDataList.Add(str.Substring(i, 2));
}
SendDataList.Add("0D");
SendBytes = new
byte[SendDataList.Count];
for
(int
j = 0; j < SendBytes.Length; j++)
{
SendBytes[j] = (byte)(Convert.ToInt32(SendDataList[j], 16));
}
}
ComDevice.Write(SendBytes, 0, SendBytes.Length);//发送数据
}
else
{
XtraMessageBox.Show("请打开串口！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
}
#region 接收数据
private
void
ComDevice_DataReceived(object
sender, SerialDataReceivedEventArgs e)
{
UpdateRecevie(ComDevice.ReadExisting());
}
public
delegate
void
UpdateString(object
NewData);
public
void
UpdateRecevie(object
NewData)
{
if
(this.InvokeRequired)//等待异步
{
UpdateString _myInvoke = new
UpdateString(UpdateRecevie);
this.Invoke(_myInvoke, new
object[] { NewData });
}
else
{
txtComReceive.AppendText(NewData.ToString());
txtComReceive.SelectionStart = txtComReceive.Text.Length - 1;
txtComReceive.ScrollToCaret();
}
}
#endregion
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