c# 客户端

复制代码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.Threading; using System.Net.Sockets; using System.Net; using System.IO; namespace WindowsFormsApplication2 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } Socket client; private void button2_Click(object sender, EventArgs e) { client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); IPAddress ip = IPAddress.Parse(this.ip.Text); IPEndPoint prot = new IPEndPoint(ip, Convert.ToInt32(this.port.Text)); client.Connect(prot); //服务器端口 listin("连接成功"); Thread th = new Thread(sends); th.Start(); } public void listin(string msg) { this.textBox2.AppendText(msg + "rn"); } void sends() { try{ while (true) { Byte[] buf = new Byte[1024 * 1024 * 3]; int result = client.Receive(buf); if (result == 0) { break; } if (buf[0] == 0) { //接收消息 string str = Encoding.UTF8.GetString(buf, 1, result-1); listin(client.RemoteEndPoint.ToString() + ":" + str); } else if (buf[0] == 1) { SaveFileDialog sd = new SaveFileDialog(); //创建 // 保存文件对话框 sd.InitialDirectory = @"C:Documents and SettingsAll Users桌面"; //设置对话框路径 sd.Title = "对话框1"; //对话框标题 sd.Filter = "所有文件|*.*"; sd.ShowDialog(); string path = sd.FileName; using (FileStream fsv = new FileStream(path, FileMode.Create, FileAccess.Write)) { //byte[] bytes = Encoding.Default.GetBytes(this.textBox1.Text); //string str = Encoding.UTF8.GetString(buf, 1, result - 1); fsv.Write(buf, 1, buf.Length - 1); } MessageBox.Show("保存成功"); } else if (buf[0] == 2) { zheng(); } } } catch { } } void zheng() { int x = this.Location.X; int y = this.Location.Y; for (int i = 0; i < 500; i++) { this.Location = new Point(x - 20, y - 20); this.Location = new Point(x , y); } } private void Form1_Load(object sender, EventArgs e) { Control.CheckForIllegalCrossThreadCalls = false; } private void button1_Click(object sender, EventArgs e) { string str = this.textBox1.Text.Trim(); Byte[] buf = System.Text.Encoding.UTF8.GetBytes(str); client.Send(buf); } } }

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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.Threading;
using System.Net.Sockets;
using System.Net;
using System.IO;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        Socket client;
        private void button2_Click(object sender, EventArgs e)
        {
             client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPAddress ip = IPAddress.Parse(this.ip.Text);
            IPEndPoint prot = new IPEndPoint(ip, Convert.ToInt32(this.port.Text));
            client.Connect(prot); //服务器端口
            listin("连接成功");
            Thread th = new Thread(sends);
            th.Start();
            
            
            
            
        }

        public void listin(string msg)
        {

            this.textBox2.AppendText(msg + "rn");

        }

        void sends() 
        {
            try{
                while (true)
                {
                    Byte[] buf = new Byte[1024 * 1024 * 3];
                    int result = client.Receive(buf);
                    if (result == 0)
                    {
                        break;
                    }
                    if (buf[0] == 0) 
                    {
                        //接收消息
                        string str = Encoding.UTF8.GetString(buf, 1, result-1);
                        listin(client.RemoteEndPoint.ToString() + ":" + str);


                    }
                    else if (buf[0] == 1)
                    {
                        SaveFileDialog sd = new SaveFileDialog(); //创建
                        // 保存文件对话框
                        sd.InitialDirectory = @"C:Documents and SettingsAll Users桌面"; //设置对话框路径
                        sd.Title = "对话框1"; //对话框标题
                        sd.Filter = "所有文件|*.*";
                        sd.ShowDialog();
                        string path = sd.FileName;
                        using (FileStream fsv = new FileStream(path, FileMode.Create, FileAccess.Write))
                        {
                            //byte[] bytes = Encoding.Default.GetBytes(this.textBox1.Text);
                            //string str = Encoding.UTF8.GetString(buf, 1, result - 1);
                            fsv.Write(buf, 1, buf.Length - 1);
                        }
                        MessageBox.Show("保存成功");


                    }
                    else if (buf[0] == 2) 
                    {
                        zheng();
                    }
                    
                }
                
            }
            catch
            {
                 
            }

        }
        void zheng() 
        {
            int x = this.Location.X;
            int y = this.Location.Y;
            for (int i = 0; i < 500; i++) 
            {
                this.Location = new Point(x - 20, y - 20);
                this.Location = new Point(x , y);
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Control.CheckForIllegalCrossThreadCalls = false;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            
            string str = this.textBox1.Text.Trim();
            Byte[] buf = System.Text.Encoding.UTF8.GetBytes(str);
            client.Send(buf);
        }


    }
}