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在這個事件里面編程就可以了，但是在對窗體內(nèi)文本進行操作的時候會發(fā)現(xiàn)出現(xiàn)了線程的沖突和錯誤。網(wǎng)上給出的一種解決方法是采用代理的方式具體的程序如下:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO.Ports;
using System.Net.Http;
using System.Collections;
namespace SerialPortDataUploader
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void comboBoxSerialPort_SelectedIndexChanged(object sender, EventArgs e)
{
serialPort1.PortName = comboBoxSerialPort.Items[comboBoxSerialPort.SelectedIndex].ToString();
}
private void comboBoxSerialPort_MouseClick(object sender, MouseEventArgs e)
{
comboBoxSerialPort.Items.Clear();
comboBoxSerialPort.Items.AddRange(SerialPort.GetPortNames());
}
private void listBoxLog_SelectedIndexChanged(object sender, EventArgs e)
{
if (listBoxLog.SelectedItem != null)
textBoxLog.Text = listBoxLog.SelectedItem.ToString();
}
Queue<char> DataQueue = new Queue<char>();
volatile private int lightZ = 50, tempZ = 28, wetZ = 30;
volatile private int lightX = 50, tempX = 28, wetX = 30;
volatile private int lightL = 50, tempL = 28, wetL = 30;
private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
char[] tmp = new char[1000];
int count = serialPort1.BytesToRead;
serialPort1.Read(tmp, 0, count);
for (int i = 0; i < count; i++)
DataQueue.Enqueue(tmp[i]);
while (DataQueue.Count >= 11)
{
switch (DataQueue.Peek())
{
case 'z':
case 'l':
case 'x':
{
char[] tmp1 = new char[100];
for (int i = 0; i < 11; i++)
tmp1[i] = DataQueue.Dequeue();
try
{
int light = (tmp1[2] - 0x30) * 10 + (tmp1[3] - 0x30);
int temp = (tmp1[5] - 0x30) * 10 + (tmp1[6] - 0x30);
int wet = (tmp1[8] - 0x30) * 10 + (tmp1[9] - 0x30);
switch (tmp1[0])
{
case 'z': lightZ = light; tempZ = temp; wetZ = wet; break;
case 'x': lightX = light; tempX = temp; wetX = wet; break;
case 'l': lightL = light; tempL = temp; wetL = wet; break;
}
}
catch (Exception) { }
break;
}
default:
DataQueue.Dequeue();
break;
}
}
}
private void Form1_Load(object sender, EventArgs e)
{
comboBoxSerialPort.Items.Clear();
comboBoxSerialPort.Items.AddRange(SerialPort.GetPortNames());
}
private void buttonConnect_Click(object sender, EventArgs e)
{
serialPort1.Open();
buttonConnect.Enabled = false;
comboBoxSerialPort.Enabled = false;
labelStatu.ForeColor = Color.Green;
timer1.Start();
}
private string HTTPGet(string url)
{
using (var client = new HttpClient())
{
var responseString = client.GetStringAsync(url);
return responseString.Result;
}
}
private async Task<string> HTTPPost(string url, Dictionary<string, string> values)
{
using (var client = new HttpClient())
{
var content = new FormUrlEncodedContent(values);
var response = await client.PostAsync(url, content);
var responseString = await response.Content.ReadAsStringAsync();
return responseString.ToString();
}
}
delegate void listBoxLogAddMessage_Callback(string mwssage);
private void listBoxLogAddMessage(string message)
{
if (listBoxLog.InvokeRequired)
{
listBoxLogAddMessage_Callback d = new listBoxLogAddMessage_Callback(listBoxLogAddMessage);
this.Invoke(d, new object[] { message });
}
else
{
listBoxLog.Items.Add(message);
listBoxLog.SelectedIndex = listBoxLog.Items.Count - 1;
}
}
bool Timer1Flag = false;
int timer = 0, TimeSet = 5;
private void timer1_Tick(object sender, EventArgs e)
{
timer++;
if (Timer1Flag)
return;
string tmp = HTTPGet(BaseURL + "API.aspx?api=contralget1");
try
{
TimeSet = int.Parse(tmp);
}
catch (Exception) { }
if (TimeSet > 0 && timer >= TimeSet)
{
timer -= TimeSet;
Timer1Flag = true;
try
{
string url = BaseURL + "API.aspx?api=upload&lightZ={LIGHTZ}&lightX={LIGHTX}&lightL={LIGHTL}&tempZ={TEMPZ}&tempX={TEMPX}&tempL={TEMPL}&wetZ={WETZ}&wetX={WETX}&wetL={WETL}".Replace("{LIGHTZ}", lightZ.ToString()).Replace("{LIGHTX}", lightX.ToString());
url = url.Replace("{LIGHTL}", lightL.ToString()).Replace("{TEMPZ}", tempZ.ToString()).Replace("{TEMPX}", tempX.ToString()).Replace("{TEMPL}", tempL.ToString()).Replace("{WETZ}", wetZ.ToString()).Replace("{WETX}", wetX.ToString()).Replace("{WETL}", wetL.ToString());
string message = HTTPGet(url);
if (!message.Equals("{\"statu\":\"ok\"}"))
listBoxLogAddMessage(DateTime.Now.ToString() + " 服務器返回異常：" + message);
else
listBoxLogAddMessage(DateTime.Now.ToString() + " 已上傳至服務器。");
}
catch (Exception ext)
{
listBoxLogAddMessage(DateTime.Now.ToString() + " 上傳至服務器失敗：" + ext.Message);
}
Timer1Flag = false;
}
}
}
}

復制代碼

全部資料51hei下載地址：

EngineeringPractice20171_ServerAndUploader-master.zip (28.48 KB, 下載次數(shù): 252)

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