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C#通讯编程（整理）|大家可以进来学习

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koobee学生在校写的《银证转帐系统》的通信代码

C# code
using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Windows.Forms;
using System.IO;
using System.Data.SqlClient;

namespace SERVERsocket
{
class SERVER
{
private Thread serverThread;
private Thread recvThread;
private TcpListener tcpListener;
private NetworkStream networkStream;
private StreamReader streamReader;
private StreamWriter streamWriter;
private Socket socketForClient;
private string message;
private int operatorNO;
private bool[] isOperated;

private void Listen()
{
try
{
Int32 port = Int32.Parse("2020");
IPAddress ipAddress = Dns.Resolve("localhost").AddressList[0];
tcpListener = new TcpListener(IPAddress.Any, port);
//开始侦听
tcpListener.Start();
//返回可以用以处理连接的Socket实例
socketForClient = tcpListener.AcceptSocket();
if (socketForClient.Connected)
{
networkStream = new NetworkStream(socketForClient);
streamReader = new StreamReader(networkStream);
streamWriter = new StreamWriter(networkStream);
recvThread = new Thread(new ThreadStart(RecvData));
recvThread.Start();
}
MessageBox.Show("客户端成功连接上服务器！");
}

catch (Exception exc)
{
MessageBox.Show(exc.Message, "Server提示");
}
}

//接收数据
private void RecvData()
{
string msg = streamReader.ReadLine();
string[] tokens = msg.Split(new char[] { '#' });
//MessageBox.Show(tokens[0]);
//MessageBox.Show(tokens[1]);
//MessageBox.Show(tokens[2]);

while (!msg.Equals("clientExit"))
{
switch (tokens[0])
{
case "c01":
{
//MessageBox.Show("开始登陆！");
//下面写SQL语句，查询对应的帐户密码是否正确，并返回信息
SqlConnection thisConnection = new SqlConnection("server = localhost;Integrated Security =true;database = security");
SqlCommand comn = new SqlCommand("select 密码 from 帐户表 where 账号=" + tokens[1], thisConnection);
thisConnection.Open();
SqlDataAdapter thisAdapt = new SqlDataAdapter("select * from 帐户表", thisConnection);
DataSet thisDataSet = new DataSet();
thisAdapt.Fill(thisDataSet, "帐户表");
string s = comn.ExecuteScalar().ToString();


// MessageBox.Show(s);
// MessageBox.Show(tokens[2]);


if (s.CompareTo(tokens[2]) == 0)
{
streamWriter.Write("1");
streamWriter.Flush();
tokens[0].Remove(0);
// MessageBox.Show("登陆消息已发送");
}
else
{
streamWriter.Write("1");
streamWriter.Flush();
tokens[0].Remove(0);
// MessageBox.Show("登陆");
}

}
break;


case "c02":
{
//下面写SQL语句，查询对应账户的余额，并返回信息
SqlConnection thisConnection = new SqlConnection("server = localhost;Integrated Security =true;database = security;");
SqlDataAdapter thisAdapt = new SqlDataAdapter("select * from 帐户表", thisConnection);
SqlCommandBuilder thisbuider = new SqlCommandBuilder(thisAdapt);
SqlCommand thisCommand = thisConnection.CreateCommand();
thisConnection.Open();
DataSet thisDataSet = new DataSet();
thisAdapt.Fill(thisDataSet, "帐户表");
string s1 = "select 金额 from 帐户表 where 账号=" + tokens[1];
setMessage("c002#" + s1); //填写账户余额
SendData();
tokens[0].Remove(0);
}
break;
case "c03":
{
//更改帐户密码的sql语句，完成后返回数据003成功
SqlConnection thisConnection = new SqlConnection("server = localhost;Integrated Security =true;database = security;");
SqlDataAdapter thisAdapt = new SqlDataAdapter("select * from 帐户表", thisConnection);
SqlCommandBuilder thisbuider = new SqlCommandBuilder(thisAdapt);
SqlCommand thisCommand = thisConnection.CreateCommand();
thisConnection.Open();
DataSet thisDataSet = new DataSet();
thisAdapt.Fill(thisDataSet, "帐户表");
foreach (DataRow rows in thisDataSet.Tables["帐户表"].Rows)
{

string s1 = "select 密码 from 帐户表 where 账号=" + tokens[1];
if (s1.CompareTo(tokens[1]) == 0)
{
thisCommand.CommandText = "update 帐户表 set 密码 = " + tokens[3] + "where 账号=" + tokens[1];
setMessage("c003#1"); //修改密码成功
SendData();
tokens[0].Remove(0);
}
else
{
setMessage("c003#2"); //修改密码失败
SendData();
tokens[0].Remove(0);
}
}
}
break;

http://topic.csdn.net/u/20080623/08/4bbd2475-45f1-42e3-a613-16b094759ade.html

他们设置了哪些标签：

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谁收藏了这个网址：

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