C#的TCP通信
TCP是连接模型，如下：
服务器连接 服务器断开
↓ ↑
服务器接收→服务器处理→服务器发送
↑ ↓
客户端发送←客户端处理←客户端接收
↑ ↓
客户端连接 客户端断开
服务器代码如下：
//
ServerListen
TcpListener tcplistener
=
new
TcpListener(
int
.Parse(txtPort.Text));
tcplistener.Start();
byte
[] btServerReceive
=
new
byte
[
256
];
string
strServerReceive
=
string
.Empty;
//
Loop for Listen
while
(
true
)
{
TcpClient tcp
=
tcplistener.AcceptTcpClient();
NetworkStream ns
=
tcp.GetStream();
int
intReceiveLength
=
ns.Read(btServerReceive,
0
,btServerReceive.Length);
strServerReceive
=
UnicodeEncoding.Unicode.GetString(btServerReceive,
0
,intReceiveLength);
txtServerResult.AppendText(
"
ServerReceive:
"
+
strServerReceive
+
"
"
);
ns.Write(btServerReceive,
0
,btServerReceive.Length);
txtServerResult.AppendText(
"
ServerSend:
"
&
相关文档：
OleDbConnection conn = null;
try
{
`string strConn;
&n ......
源码如下：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.IO;
using Microsoft.Win32;
namespace mv
{
......
private void save_db(){
SqlConnection conn = new SqlConnection(ConfigurationSettings.AppSettings[""].ToString());
SqlCommand comm = new SqlCommand();
conn.Open();
SqlTransaction rollbk2= conn.BeginTransaction();
& ......
一、首先先添加引用 using Microsoft.Win32;
//因为操作注册表的两个类RegistryKey和Registry都包含在此引用中；
二、编写代码开始操作注册表
1、 #region 限制软件的使用次数
pri ......
