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WebClient 实现网络文件下载实例源码(带进度)

【实例简介】一卡通过管理系统

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;//Download by http://down.liehuo.netusing System.Data.SqlClient;namespace Case05_12{ public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { try { //生成连接数据库字符串 string ConStr = "data source=.;database=ljp;uid=sa;pwd=123"; //定义SqlConnection对象实例 SqlConnection con = new SqlConnection(ConStr); //定义Select查询语句 string Sql = "select*from biaoge"; SqlDataAdapter ada = new SqlDataAdapter(Sql, con); DataSet ds = new DataSet(); //定义DataSet对象实例 ada.Fill(ds); //连接数据表格，显示数据 this.dataGridView1.DataSource = ds.Tables[0].DefaultView; } catch { return; } } private void button2_Click(object sender, EventArgs e) { this.Close(); Application.Exit(); } }}

VS2012保存时自动格式化代码

        private void StopRectTimer_Tick(object sender, EventArgs e)        {            //如果鼠标在窗体上，则根据停靠位置显示整个窗体              if (this.Bounds.Contains(Cursor.Position))            {                switch (this.StopDock)                {                    case AnchorStyles.Top:                        this.Location = new Point(this.Location.X, 0);                        break;                    case AnchorStyles.Bottom:                        this.Location = new Point(this.Location.X, Screen.PrimaryScreen.Bounds.Height - this.Height);                        break;                    case AnchorStyles.Left:                        this.Location = new Point(0, this.Location.Y);                        break;                    case AnchorStyles.Right:                        this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - this.Width, this.Location.Y);                        break;                }            }            else  //如果鼠标离开窗体，则根据停靠位置隐藏窗体，但须留出部分窗体边缘以便鼠标选中窗体              {                switch (this.StopDock)                {                    case AnchorStyles.Top:                        this.Location = new Point(this.Location.X, (this.Height - 3) * (-1));                        break;                    case AnchorStyles.Bottom:                        this.Location = new Point(this.Location.X, Screen.PrimaryScreen.Bounds.Height - 5);                        break;                    case AnchorStyles.Left:                        this.Location = new Point((-1) * (this.Width - 3), this.Location.Y);                        break;                    case AnchorStyles.Right:                        this.Location = new Point(Screen.PrimaryScreen.Bounds.Width - 2, this.Location.Y);                        break;                }            }        }

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(); } }}

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