C#網路程式設計經典程式碼
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.Net.Sockets;
using System.IO;
using System.Threading;
namespace connect
{
///
/// Summary description for Form1.
///
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private TcpClient client;//新加的
private int i;//新加的
private NetworkStream netStream;//新加的
private FileStream filestream=null;//新加的
//private Stream stream =null;//新加的
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.StatusBarPanel statusBarPanel1;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.RichTextBox richTextBox1;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox3;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.ComboBox comboBox1;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.SaveFileDialog saveFileDialog1;
///
/// Required designer variable.
///
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
///
/// Clean up any resources being used.
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.label4 = new System.Windows.Forms.Label();
this.label5 = new System.Windows.Forms.Label();
this.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.statusBarPanel1 = new System.Windows.Forms.StatusBarPanel();
this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
this.textBox2 = new System.Windows.Forms.TextBox();
this.textBox3 = new System.Windows.Forms.TextBox();
this.textBox1 = new System.Windows.Forms.TextBox();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.comboBox1 = new System.Windows.Forms.ComboBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.statusBar1 = new System.Windows.Forms.StatusBar();
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).BeginInit();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// label4
//
this.label4.Location = new System.Drawing.Point(24, 56);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(96, 23);
this.label4.TabIndex = 1;
this.label4.Text = "伺服器IP地址：";
//
// label5
//
this.label5.Location = new System.Drawing.Point(8, 216);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(104, 23);
this.label5.TabIndex = 1;
this.label5.Text = "選擇下載檔案：";
//
// richTextBox1
//
this.richTextBox1.Location = new System.Drawing.Point(120, 144);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(312, 64);
this.richTextBox1.TabIndex = 4;
this.richTextBox1.Text = "";
//
// label1
//
this.label1.Location = new System.Drawing.Point(24, 24);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(80, 23);
this.label1.TabIndex = 1;
this.label1.Text = "伺服器名稱：";
//
// label2
//
this.label2.Location = new System.Drawing.Point(24, 80);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(80, 23);
this.label2.TabIndex = 1;
this.label2.Text = "埠：";
//
// label3
//
this.label3.Location = new System.Drawing.Point(8, 144);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(104, 23);
this.label3.TabIndex = 1;
this.label3.Text = "伺服器檔案列表：";
//
// statusBarPanel1
//
this.statusBarPanel1.Width = 300;
//
// saveFileDialog1
//
this.saveFileDialog1.FileName = "doc1";
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(160, 56);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(184, 21);
this.textBox2.TabIndex = 2;
this.textBox2.Text = "";
//
// textBox3
//
this.textBox3.Location = new System.Drawing.Point(160, 80);
this.textBox3.Name = "textBox3";
this.textBox3.Size = new System.Drawing.Size(184, 21);
this.textBox3.TabIndex = 2;
this.textBox3.Text = "";
//
// textBox1
//
this.textBox1.Location = new System.Drawing.Point(160, 24);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(184, 21);
this.textBox1.TabIndex = 2;
this.textBox1.Text = "";
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.label1,
this.textBox1,
this.textBox3,
this.textBox2,
this.label4,
this.label2});
this.groupBox1.Location = new System.Drawing.Point(8, 8);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(432, 120);
this.groupBox1.TabIndex = 5;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "伺服器（名稱與IP地址任輸其一）";
//
// comboBox1
//
this.comboBox1.DropDownWidth = 312;
this.comboBox1.Location = new System.Drawing.Point(120, 216);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(312, 20);
this.comboBox1.TabIndex = 6;
//
// button1
//
this.button1.Location = new System.Drawing.Point(40, 280);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(72, 24);
this.button1.TabIndex = 0;
this.button1.Text = "連線";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(344, 280);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(72, 24);
this.button2.TabIndex = 0;
this.button2.Text = "關閉連線";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(192, 280);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(72, 24);
this.button3.TabIndex = 0;
this.button3.Text = "下載";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// statusBar1
//
this.statusBar1.Location = new System.Drawing.Point(0, 313);
this.statusBar1.Name = "statusBar1";
this.statusBar1.Panels.AddRange(new System.Windows.Forms.StatusBarPanel[] {
this.statusBarPanel1});
this.statusBar1.ShowPanels = true;
this.statusBar1.Size = new System.Drawing.Size(456, 20);
this.statusBar1.TabIndex = 3;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(456, 333);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button3,
this.label5,
this.comboBox1,
this.groupBox1,
this.richTextBox1,
this.label3,
this.statusBar1,
this.button2,
this.button1});
this.MaximizeBox = false;
this.Name = "Form1";
this.Text = "Connect_read";
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).EndInit();
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
///
/// The main entry point for the application.
///
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void button1_Click(object sender, System.EventArgs e)
{ int port=0;
IPAddress myIP=IPAddress.Parse("127.0.0.1");
try
{
myIP=IPAddress.Parse(textBox2.Text);}
catch{MessageBox.Show("您輸入的IP地址格式不正確！");}
client =new TcpClient();
try{
port=Int32.Parse(textBox3.Text);
}
catch{MessageBox.Show("請輸入整數。");}
try
{
if(textBox1.Text!=""&&textBox2.Text=="")
{
client.Connect(textBox1.Text,port);
statusBarPanel1.Text="與伺服器建立連線";
netStream=client.GetStream();
byte[] bb=new byte[6400];
i=netStream.Read(bb,0,6400);
string ss=System.Text.Encoding.BigEndianUnicode.GetString(bb);
richTextBox1.AppendText(ss);
int j=richTextBox1.Lines.Length;
for(int k=0;k
comboBox1.Items.Add(richTextBox1.Lines[k]);
}
comboBox1.Text=comboBox1.Items[0].ToString();
}
if(textBox2.Text!=""&&textBox1.Text==""){
client.Connect(myIP,port);
statusBarPanel1.Text="與伺服器建立連線";
netStream=client.GetStream();
byte[] bb=new byte[6400];
int i=netStream.Read(bb,0,6400);
string ss=System.Text.Encoding.BigEndianUnicode.GetString(bb);
richTextBox1.AppendText(ss);
int j=richTextBox1.Lines.Length;
for(int k=0;k
comboBox1.Items.Add(richTextBox1.Lines[k]);
}
comboBox1.Text=comboBox1.Items[0].ToString();
}
if(textBox2.Text!=""&&textBox1.Text!=""){
client.Connect(myIP,port);
statusBarPanel1.Text="與伺服器建立連線";
netStream=client.GetStream();
byte[] bb=new byte[6400];
int i=netStream.Read(bb,0,6400);
string ss=System.Text.Encoding.BigEndianUnicode.GetString(bb);
richTextBox1.AppendText(ss);
int j=richTextBox1.Lines.Length;
for(int k=0;k
comboBox1.Items.Add(richTextBox1.Lines[k]);
}
comboBox1.Text=comboBox1.Items[0].ToString();
}
}
catch(Exception ee){MessageBox.Show(ee.Message);}
}
private void button2_Click(object sender, System.EventArgs e)
{
try
{netStream=client.GetStream();
string clo="@@@@@@"+"rn";
byte[] by=System.Text.Encoding.BigEndianUnicode.GetBytes(clo.ToCharArray());
netStream.Write(by,0,by.Length);
netStream.Flush();
client.Close();
statusBarPanel1.Text="與伺服器斷開連線";
}
catch{}
}
private void button3_Click(object sender, System.EventArgs e)
{
if(saveFileDialog1.ShowDialog()==DialogResult.OK)
{ //構造新的檔案流
filestream=new FileStream(saveFileDialog1.FileName,FileMode.OpenOrCreate,FileAccess.Write);
//獲取伺服器網路流
netStream=client.GetStream();
string down=comboBox1.Text+"rn";
byte[] by=System.Text.Encoding.BigEndianUnicode.GetBytes(down.ToCharArray());
//向伺服器傳送要下載的檔名
netStream.Write(by,0,by.Length);
//重新整理流
netStream.Flush();
//啟動接收檔案的執行緒
Thread thread=new Thread(new ThreadStart(download));
thread.Start();
}//對應if(saveFileDialog1.ShowDialog()==DialogResult.OK)
}
private void download()
{
down(ref netStream);
}
private void down(ref NetworkStream stream)
{
int length=1024;
byte[] bye=new byte[1024];
int tt=stream.Read(bye,0,length);
//下行迴圈讀取網路流並寫進檔案
while(tt>0)
{
string ss=System.Text.Encoding.ASCII.GetString(bye);
int x=ss.IndexOf("
if(x!=-1)
{
filestream.Write(bye,0,x);
filestream.Flush();
break;
}
else
{
filestream.Write(bye,0,tt);
filestream.Flush();
}
tt=stream.Read(bye,0,length);
}//對用於while(!control)的“｛”
filestream.Close();
MessageBox.Show("下載完畢！");
}
}
}
本文來自：http://hi.baidu.com/kalada/blog/item/e1955a2a7d9a829e023bf609.html
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/9437124/viewspace-1018072/，如需轉載，請註明出處，否則將追究法律責任。
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