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串口接收数据c#

2008-09-02 10:07 603 查看

using System.IO.Ports;
using System.Threading;
using System.IO;

namespace SerialPortDemo
{
public partial class Form1 : Form
{
bool isStar = false;
Thread threadReceive = null;
SerialPort serialPort = null;
int i = 0;
int k = 0;

public Form1()
{
InitializeComponent();
this.comboBox1.SelectedIndex = 0;
this.comboBox2.SelectedIndex = 2;

serialPort = new SerialPort();
if (serialPort.IsOpen)
serialPort.Close();
//获得参数
serialPort.PortName = comboBox1.SelectedItem.ToString();
serialPort.BaudRate = int.Parse(comboBox2.SelectedItem.ToString());
serialPort.Open();

ThreadStart method = new ThreadStart(ReceiveData);//在线程上执行此方法
threadReceive = new Thread(new ThreadStart(method));
}

private void button1_Click(object sender, EventArgs e)
{
try
{
if (button1.Text == "接收数据")
{
if (!isStar)//如果isStar等于true,则启动线程
{
threadReceive.Start();
this.toolStripStatusLabel1.Text = "正在接收数据......";
}
else
{
threadReceive.Resume();//如果isStar等于false,则解除挂起线程
this.toolStripStatusLabel1.Text = "暂停接收...";
}
button1.Text = "停止接收";
}
else
{

threadReceive.Suspend();//如果是"停止接收",则挂起线程
button1.Text = "接收数据";
this.toolStripStatusLabel1.Text = "暂停接收...";
}

}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
serialPort.Close();

}

}
//不断循环接收数据
private void ReceiveData()
{
while (true)
{
Thread.Sleep(500);
this.isStar = true;
this.SynReceiveData();
}
}

//通过串口取数据
private void SynReceiveData()
{
MessageBox.Show("接收数据" + k);
k++;
string inputData = serialPort.ReadExisting();
try
{
if (inputData != string.Empty)
{
if (inputData.Trim().Length == 45)
{
SetText(inputData);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

}

//分隔字符串并保存在指定目录下
private void SetText(string str)
{
string aa = str;
StreamWriter sw = null;

if (aa != string.Empty)
{
string aaa = aa.Insert(13, ",");
aaa = aaa.Insert(32, ",");

String fileName = "C://GAJ_PUB//kaoqin";
if (Directory.Exists(fileName) == false)//如果目录不存在
{
Directory.CreateDirectory(fileName);//创建目录
sw = File.CreateText("C://GAJ_PUB//kaoqin//person" + i + ".txt");//创建文本
}
else
{
sw = File.CreateText("C://GAJ_PUB//kaoqin//person" + i + ".txt");
}
sw.WriteLine(aaa);

sw.Flush();

sw.Close();
i++;
MessageBox.Show("文件已存入指定目录下!!");
}

}

private void button2_Click(object sender, EventArgs e)
{
if (threadReceive.ThreadState==ThreadState.Running)//当前状态为启动线程
{
threadReceive.Abort();
this.Close();
}
else if (threadReceive.ThreadState == ThreadState.Suspended)//当前状态为挂起线程
{
threadReceive.Resume();
threadReceive.Abort();
this.Close();
}
else if (threadReceive.ThreadState == ThreadState.SuspendRequested)//当前状态为正在挂起线程
{
threadReceive.Resume();
threadReceive.Abort();
this.Close();
}
else if (threadReceive.ThreadState == ThreadState.Unstarted)
{
this.Close();
}
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (threadReceive.ThreadState == ThreadState.Running)//当前状态为启动线程
{
threadReceive.Abort();
this.Close();
}
else if (threadReceive.ThreadState == ThreadState.Suspended)//当前状态为挂起线程
{
threadReceive.Resume();
threadReceive.Abort();
this.Close();
}
else if (threadReceive.ThreadState == ThreadState.SuspendRequested)//当前状态为正在挂起线程
{
threadReceive.Resume();
threadReceive.Abort();
this.Close();
}
}

}
}

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