实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
namespace 客户端
{
public partial class Client : Form
{
public Client()
{
InitializeComponent();
}
Socket socketSend;
Thread th;
bool IsAuto = false;
string head = "500000FF03FF00";//报文头,
string length = "";
string time = "0010";
string function_code = "";
string different_code = "";
string data = "";
string start = "";
string count = "";
private void btn_connect_Click(object sender, EventArgs e)
{
if (btn_connect.Text=="连接")
{
try
{
//创建负责通信的Socket
socketSend = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPAddress ip = IPAddress.Parse(txtServer.Text);
IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(txtPort.Text));
//获得要连接的远程服务器应用程序的IP和端口号
socketSend.Connect(point);
ShowMsg("连接成功" socketSend.RemoteEndPoint);
//开启一个新的线程接受服务器接受的数据
th = new Thread(Recive);
th.IsBackground = true;
th.Start();
btn_connect.Text = "关闭";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
else
{
Connect_Close();
ShowMsg("连接关闭");
btn_connect.Text = "连接";
timer1.Stop();
btnAutoSend.Text = "自动发送";
btnAutoSend.BackColor = Color.Green;
IsAuto = false;
}
}
void ShowMsg(string str)
{
string space = " ";
string NewStr = string.Format("{0}{1}{2}", str, space,DateTime.Now.ToString());
textBox3.AppendText(NewStr "\r\n");
}
private void Form1_Load(object sender, EventArgs e)
{
txtServer.Text= "192.168.1.4";
txtPort.Text = "4000";
Control.CheckForIllegalCrossThreadCalls = false;
rbtnM_Read.Checked = true;
txtMorDStart.Text = "100";
txtCount.Text = "1";
btn_send.Text = "读取";
}
private void btn_send_Click(object sender, EventArgs e)
{
Send();
}
private void Send()
{
try
{
if (socketSend.Connected)
{
string str = "";
if (rbtnM_Read.Checked)
{
str = M_read(str);
}
else if (rbtnM_Write.Checked)
{
str = M_Write(str);
}
else if (rbtnD_Read.Checked)
{
str = D_read(str);
}
else if (rbtnD_Write.Checked)
{
str = D_write(str);
}
byte[] buffer = System.Text.Encoding.ASCII.GetBytes(str);
socketSend.Send(buffer);
}
}
catch
{
}
}
private string M_read(string str)
{
function_code = "0401";
different_code = "0001";
data = "M*";
start = txtMorDStart.Text.PadLeft(6, '0');
int k = int.Parse(txtCount.Text);
count = k.ToString("x").PadLeft(4, '0');
length = (time.Length function_code.Length different_code.Length data.Length start.Length count.Length).ToString("x4");
str = string.Format("{0}{1}{2}{3}{4}{5}{6}{7}", head, length, time, function_code, different_code, data, start, count);
return str;
}
private string M_Write(string str)
{
function_code = "1401";
different_code = "0001";
data = "M*";
start = txtMorDStart.Text.PadLeft(6, '0');
int k = int.Parse(txtCount.Text);
count = k.ToString("x").PadLeft(4, '0');
length = (time.Length function_code.Length different_code.Length data.Length start.Length count.Length k).ToString("x4");
str = string.Format("{0}{1}{2}{3}{4}{5}{6}{7}{8}", head, length, time, function_code, different_code, data, start, count, txtValueWrite.Text.PadLeft(k, '0'));
return str;
}
private string D_read(string str)
{
function_code = "0401";
different_code = "0000";
data = "D*";
start = txtMorDStart.Text.PadLeft(6, '0');
int k = int.Parse(txtCount.Text);
count = k.ToString("x").PadLeft(4, '0');
length = (time.Length function_code.Length different_code.Length data.Length start.Length count.Length).ToString("x4");
str = string.Format("{0}{1}{2}{3}{4}{5}{6}{7}", head, length, time, function_code, different_code, data, start, count);
return str;
}
private string D_write(string str)
{
function_code = "1401";
different_code = "0000";
data = "D*";
start = txtMorDStart.Text.PadLeft(6, '0');
int k = int.Parse(txtCount.Text);
count = k.ToString("x").PadLeft(4, '0').ToUpper();
length = (time.Length function_code.Length different_code.Length data.Length start.Length count.Length k * 4).ToString("x4").ToUpper();
string sumend = "";
string sumtemp = "";
int k1 = txtValueWrite.Text.Length;
string sum = txtValueWrite.Text;
int DifferenceValue = 4 * k - k1;
if (DifferenceValue==0)
{
sumend = sum;
}
else if (DifferenceValue>0)
{
sumend = sum.PadLeft(4 * k, '0'); //PadRight(4 * k, '0');
}
else
{
}
str = string.Format("{0}{1}{2}{3}{4}{5}{6}{7}{8}", head, length, time, function_code, different_code, data, start, count, sumend);
return str;
}
void Recive()
{
while (true)
{
try
{
//客户端连接成功后，服务器接受客户端发来的信息
byte[] buffer = new byte[1024 * 1024 * 2];
//实际接受的有效字节数--r
int r = socketSend.Receive(buffer);
if (r == 0)
{
break;
}
string str = Encoding.ASCII.GetString(buffer, 0, r);
if (r > 22)
{
txtValueRead.Text = str.Remove(0, 22);
}
ShowMsg(socketSend.RemoteEndPoint ":" str);
}
catch
{
}
}
}
private void Client_FormClosing(object sender, FormClosingEventArgs e)
{
Connect_Close();
}
private void Connect_Close()
{
if (socketSend != null)
{
if (socketSend.Connected)
{
socketSend.Close();
}
}
if (th != null)
{
if (th.IsAlive)
{
th.Abort();
}
}
}
private void btnAutoSend_Click(object sender, EventArgs e)
{
if (!IsAuto)
{
timer1.Start();
btnAutoSend.Text = "关闭";
btnAutoSend.BackColor = Color.Red;
IsAuto = true;
rbtnM_Read.Enabled = false;
rbtnD_Write.Enabled = false;
rbtnD_Read.Enabled = false;
rbtnM_Write.Enabled = false;
txtMorDStart.Enabled = false;
txtCount.Enabled = false;
txtValueWrite.Enabled = false;
}
else
{
timer1.Stop();
btnAutoSend.Text = "自动发送";
btnAutoSend.BackColor = Color.Green;
IsAuto = false;
rbtnM_Read.Enabled = true;
rbtnD_Write.Enabled = true;
rbtnD_Read.Enabled = true;
rbtnM_Write.Enabled = true;
txtMorDStart.Enabled = true;
txtCount.Enabled = true;
txtValueWrite.Enabled = true;
}
}
private void timer1_Tick(object sender, EventArgs e)
{
Send();
}
private void timer2_Tick(object sender, EventArgs e)
{
if (rbtnM_Read.Checked)
{
btn_send.Text = "M读取";
if (btnAutoSend.Text!="关闭")
{
btnAutoSend.Text = "M自动读取";
}
}
else if (rbtnM_Write.Checked)
{
btn_send.Text = "M写入";
if (btnAutoSend.Text != "关闭")
{
btnAutoSend.Text = "M自动写入";
}
}
else if (rbtnD_Read.Checked)
{
btn_send.Text = "D读取";
if (btnAutoSend.Text != "关闭")
{
btnAutoSend.Text = "D自动读取";
}
}
else if (rbtnD_Write.Checked)
{
btn_send.Text = "D写入";
if (btnAutoSend.Text != "关闭")
{
btnAutoSend.Text = "D自动写入";
}
}
}
}
}
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