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c#传送文件发送端代码

2013年10月09日 ⁄ 综合 ⁄ 共 8079字 ⁄ 字号 评论关闭

//代码声明:此代码是从网络上下载过来的.项目名称TcpFileTransferDemo ,已经不记得是从哪个网站哪个好友那里找来的。程序被我修改了很简单的一小部分.希望大家多交流交流.用到了委托(线程修改空间statusBar1.Text).还有几个功能一直是这个星期从网络上查询"C#传(送)(二进制)文件"学习中整理的来的.

//下面是发送程序端代码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

//添加引用
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Text;
using System.IO;

using System.Data;

namespace CSharpData
{
 /// <summary>
 /// SendFileForm 的摘要说明。
 /// </summary>
 public class SendFileForm : System.Windows.Forms.Form
 {
  private System.Windows.Forms.TextBox textBox2;
  private System.Windows.Forms.Label label2;
  private System.Windows.Forms.TextBox textBox1;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.Button button3;
  private System.Windows.Forms.Button button2;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.Button button4;
  private System.Windows.Forms.StatusBar statusBar1;
  private System.Windows.Forms.Panel panel1;
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;

  public SendFileForm()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //

   setStatusDelegate = new SetStatusDelegate(SetStatus);
  }

  /// <summary>
  /// 清理所有正在使用的资源。
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if(components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

  #region Windows 窗体设计器生成的代码
  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {
   this.textBox2 = new System.Windows.Forms.TextBox();
   this.label2 = new System.Windows.Forms.Label();
   this.textBox1 = new System.Windows.Forms.TextBox();
   this.label1 = new System.Windows.Forms.Label();
   this.button3 = new System.Windows.Forms.Button();
   this.button2 = new System.Windows.Forms.Button();
   this.button1 = new System.Windows.Forms.Button();
   this.button4 = new System.Windows.Forms.Button();
   this.statusBar1 = new System.Windows.Forms.StatusBar();
   this.panel1 = new System.Windows.Forms.Panel();
   this.panel1.SuspendLayout();
   this.SuspendLayout();
   //
   // textBox2
   //
   this.textBox2.Location = new System.Drawing.Point(80, 64);
   this.textBox2.Name = "textBox2";
   this.textBox2.TabIndex = 15;
   this.textBox2.Text = "800";
   //
   // label2
   //
   this.label2.Location = new System.Drawing.Point(16, 72);
   this.label2.Name = "label2";
   this.label2.Size = new System.Drawing.Size(56, 16);
   this.label2.TabIndex = 14;
   this.label2.Text = "通信端口";
   //
   // textBox1
   //
   this.textBox1.Location = new System.Drawing.Point(80, 24);
   this.textBox1.Name = "textBox1";
   this.textBox1.TabIndex = 13;
   this.textBox1.Text = "192.168.1.250";
   //
   // label1
   //
   this.label1.Location = new System.Drawing.Point(16, 32);
   this.label1.Name = "label1";
   this.label1.Size = new System.Drawing.Size(56, 16);
   this.label1.TabIndex = 12;
   this.label1.Text = "IP地址";
   //
   // button3
   //
   this.button3.Location = new System.Drawing.Point(48, 104);
   this.button3.Name = "button3";
   this.button3.Size = new System.Drawing.Size(64, 23);
   this.button3.TabIndex = 10;
   this.button3.Text = "发送文件";
   this.button3.Click += new System.EventHandler(this.button3_Click);
   //
   // button2
   //
   this.button2.Location = new System.Drawing.Point(192, 64);
   this.button2.Name = "button2";
   this.button2.Size = new System.Drawing.Size(64, 23);
   this.button2.TabIndex = 9;
   this.button2.Text = "停止监听";
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(192, 24);
   this.button1.Name = "button1";
   this.button1.Size = new System.Drawing.Size(64, 23);
   this.button1.TabIndex = 8;
   this.button1.Text = "开始监听";
   this.button1.Click += new System.EventHandler(this.button1_Click);
   //
   // button4
   //
   this.button4.Location = new System.Drawing.Point(152, 104);
   this.button4.Name = "button4";
   this.button4.Size = new System.Drawing.Size(64, 23);
   this.button4.TabIndex = 16;
   this.button4.Text = "取消发送";
   this.button4.Click += new System.EventHandler(this.button4_Click);
   //
   // statusBar1
   //
   this.statusBar1.Location = new System.Drawing.Point(0, 191);
   this.statusBar1.Name = "statusBar1";
   this.statusBar1.Size = new System.Drawing.Size(292, 22);
   this.statusBar1.TabIndex = 17;
   this.statusBar1.Text = "statusBar1";
   //
   // panel1
   //
   this.panel1.Controls.Add(this.button2);
   this.panel1.Controls.Add(this.label1);
   this.panel1.Controls.Add(this.button1);
   this.panel1.Controls.Add(this.textBox1);
   this.panel1.Controls.Add(this.label2);
   this.panel1.Controls.Add(this.textBox2);
   this.panel1.Controls.Add(this.button3);
   this.panel1.Controls.Add(this.button4);
   this.panel1.Location = new System.Drawing.Point(8, 16);
   this.panel1.Name = "panel1";
   this.panel1.Size = new System.Drawing.Size(272, 152);
   this.panel1.TabIndex = 18;
   //
   // SendFileForm
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(292, 213);
   this.Controls.Add(this.panel1);
   this.Controls.Add(this.statusBar1);
   this.Name = "SendFileForm";
   this.Text = "局域网内发送文件";
   this.panel1.ResumeLayout(false);
   this.ResumeLayout(false);

  }
  #endregion

  #region 程序逻辑
  private Thread worker;
  private string hostname;
  private int port;
  private string filename;

  private void Start()
  {
   try // 捕获线程中止异常
   {
    SetStatus("连接中");
    TcpClient tcpClient = new TcpClient();
    tcpClient.SendTimeout = 30000;
    tcpClient.NoDelay = true;

    try // 捕获连接建立时出现的错误
    {
     tcpClient.Connect(hostname, port);
    }
    catch (Exception e)
    {
     SetStatus("连接出错:" + e.Message);
     InvokeCancel();
     worker = null;
     return;
    }
    BinaryWriter writer = new BinaryWriter(tcpClient.GetStream());

    try // 捕获文件传输中途出现的错误,并确保关闭连接
    {
     SetStatus("发送文件信息中");
     FileInfo fi = new FileInfo(filename);
     writer.Write(fi.Name);
     writer.Write(fi.Length);

     SetStatus("发送文件内容中");
     FileStream fs = fi.OpenRead();
     try // 保证关闭文件
     {
      long total = fi.Length;
      byte[] buffer = new byte[8192];
      int len;
      while ((len = fs.Read(buffer, 0, 8192)) != 0)
      {
       writer.Write(buffer, 0, len);
       SetStatus("发送文件内容中 - 剩余 " +
        (total -= len).ToString() + " 字节");
      }
      SetStatus("文件发送完毕");
      InvokeCancel();
     }
     finally
     {
      fs.Close();
     }
    }
    catch (Exception e)
    {
     SetStatus("文件传输中途出错:" + e.Message);
     InvokeCancel();
    }
    finally
    {
     try { writer.Close(); }
     catch {}
     try { tcpClient.Close(); }
     catch {}
    }
   }
   catch (ThreadAbortException)
   {
    SetStatus("用户中断");
    InvokeCancel();
   }
   finally
   {
    worker = null;
   }
  }
  #endregion
  
  

  private void button1_Click(object sender, System.EventArgs e)
  {
  
  }

  private void button3_Click(object sender, System.EventArgs e)
  {
      
   hostname = textBox1.Text.Trim();
   if (hostname.Length == 0)
   {
    MessageBox.Show("请输入目标IP/域名。");
    textBox1.Focus();
    return;
   }
   port = 0;
   try
   {
    port = int.Parse(textBox2.Text);
    if (port < 1 || port > 65535) throw new ArgumentOutOfRangeException();
   }
   catch
   {
    MessageBox.Show("请输入有效的端口号。");
    textBox2.Focus();
    textBox2.SelectAll();
    return;
   }
   //打开要发送的文件
   OpenFileDialog Ofd = new OpenFileDialog();
   Ofd.InitialDirectory = "C:/";
   Ofd.Filter = "所有文件|*.*";
   Ofd.FilterIndex = 1;
   if (Ofd.ShowDialog(this) == DialogResult.OK)
   filename = Ofd.FileName;   
   if (!File.Exists(filename))
   {
    MessageBox.Show("请输入存在的文件名。");    
    return;
   }
   button3.Enabled = false;
   button4.Enabled = true;
   worker = new Thread(new ThreadStart(Start));
   worker.IsBackground = true;
   worker.Start();
  }

  private void button4_Click(object sender, System.EventArgs e)
  {
   try { worker.Abort(); }
   catch {}

   button3.Enabled = true;
   button4.Enabled = false;
  }

  #region 线程安全UI操作代码

  private delegate void SetStatusDelegate(string status);
  private SetStatusDelegate setStatusDelegate; // 赋值在构造函数里
  
  private void SetStatusSynchronized(string status)
  {  
  statusBar1.Text = status;  
  }

  private void SetStatus(string status)
  {
   if (InvokeRequired)
    Invoke(setStatusDelegate, new object[] { status });
   else
    statusBar1.Text = status;
  }

  private void InvokeCancel()
  {
   if (InvokeRequired)
    Invoke(new MethodInvoker(InvokeCancel));
   else
   {
    button4.Enabled = false;
    button3.Enabled = true;
   }
  }
  #endregion
 }
}

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