C# WinForm 基于Socket的聊天室

七层架构，带SQL数据库

【实例简介】

可正反转和调速

操作sqllittle数据库的类个人封装

条码识别 【核心代码】 usingSystem; usingSystem.Collections.Generic; usingSystem.ComponentModel; usingSystem.Data; usingSystem.Diagnostics; usingSystem.Drawing; usingSystem.Linq; usingSystem.Text; usingSystem.Windows.Forms; usingSystem.Drawing.Imaging; usingThoughtWorks.QRCode.Codec; usingThoughtWorks.QRCode.Codec.Data; usingZBar; usingZXing; usingImage = System.Drawing.Image;

C# WinFrom无失真缩小图片

雪花飞舞

DotRas 获取ip地址 示例源码

服务器客户端UDP广播通话 【核心代码】using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Net.Sockets;using System.Net;namespace NetServer{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button2_Click(object sender, EventArgs e) { this.Close(); } private void Form1_Load(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { //使用UDP协议发送数据 Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); //设置端口号 IPEndPoint ieps = new IPEndPoint(IPAddress.Broadcast, 8900); socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, 1); //将发送数据转换为字节数组 byte[] bytess = System.Text.Encoding.Unicode.GetBytes(textBox1.Text); socket.SendTo(bytess, ieps); socket.Close(); } }}

C# 支付宝在线支付实例源码下载(即时到账接口)