[导入]抢答服务器

 

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.Text;
using System.IO;
using System.Threading;

namespace LeadUpServer
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class Form1 : System.Windows.Forms.Form
 {
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.Label lblMessage;
  private System.Windows.Forms.Label label1;
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;

  public Form1()
  {
   //
   // 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
   //
  }

  /// <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.button1 = new System.Windows.Forms.Button();
   this.lblMessage = new System.Windows.Forms.Label();
   this.label1 = new System.Windows.Forms.Label();
   this.SuspendLayout();
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(296, 32);
   this.button1.Name = "button1";
   this.button1.Size = new System.Drawing.Size(112, 120);
   this.button1.TabIndex = 0;
   this.button1.Text = "开始新一轮";
   this.button1.Click += new System.EventHandler(this.button1_Click);
   //
   // lblMessage
   //
   this.lblMessage.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
   this.lblMessage.Font = new System.Drawing.Font("宋体", 72F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
   this.lblMessage.Location = new System.Drawing.Point(24, 40);
   this.lblMessage.Name = "lblMessage";
   this.lblMessage.Size = new System.Drawing.Size(248, 112);
   this.lblMessage.TabIndex = 1;
   //
   // label1
   //
   this.label1.Location = new System.Drawing.Point(24, 8);
   this.label1.Name = "label1";
   this.label1.TabIndex = 2;
   this.label1.Text = "抢答结果:";
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(432, 173);
   this.Controls.Add(this.label1);
   this.Controls.Add(this.lblMessage);
   this.Controls.Add(this.button1);
   this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
   this.MaximizeBox = false;
   this.MinimizeBox = false;
   this.Name = "Form1";
   this.Text = "抢答服务器";
   this.Load += new System.EventHandler(this.Form1_Load);
   this.ResumeLayout(false);

  }
  #endregion

  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }

  Thread t;
  private void button1_Click(object sender, System.EventArgs e)
  {
   this.lblMessage.Text="";
  }
  private void Read()
  {
   UdpClient client=new UdpClient(10000);
   while(true)
   {
    IPEndPoint remote=null;
    byte[] bs;
    bs=client.Receive(ref remote);
    Encoding code=Encoding.GetEncoding("gb2312");

    IPEndPoint aaa=new IPEndPoint(remote.Address,10001);
    if(this.lblMessage.Text=="")
    {
     this.lblMessage.Text=code.GetString(bs)+"抢答成功.";

    }
    
    byte[] msg=code.GetBytes(this.lblMessage.Text);
    client.Send(msg,msg.Length,aaa);
   }
   client.Close();
  }

  private void Form1_Load(object sender, System.EventArgs e)
  {
   t=new Thread(new ThreadStart(Read));
   t.IsBackground=true;
   t.Start();
  }
 }
}

文章来源:http://blog.sina.com.cn/s/blog_49458c27010008sa.html