[导入]抢答客户端

 

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 LeadUpClient
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class Form1 : System.Windows.Forms.Form
 {
  private System.Windows.Forms.TextBox txtNo;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.TextBox txtIP;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.Label label2;
  /// <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.txtNo = new System.Windows.Forms.TextBox();
   this.button1 = new System.Windows.Forms.Button();
   this.txtIP = new System.Windows.Forms.TextBox();
   this.label1 = new System.Windows.Forms.Label();
   this.label2 = new System.Windows.Forms.Label();
   this.SuspendLayout();
   //
   // txtNo
   //
   this.txtNo.Location = new System.Drawing.Point(72, 80);
   this.txtNo.Name = "txtNo";
   this.txtNo.Size = new System.Drawing.Size(200, 21);
   this.txtNo.TabIndex = 0;
   this.txtNo.Text = "";
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(288, 32);
   this.button1.Name = "button1";
   this.button1.TabIndex = 1;
   this.button1.Text = "抢答";
   this.button1.Click += new System.EventHandler(this.button1_Click);
   //
   // txtIP
   //
   this.txtIP.Location = new System.Drawing.Point(72, 32);
   this.txtIP.Name = "txtIP";
   this.txtIP.Size = new System.Drawing.Size(200, 21);
   this.txtIP.TabIndex = 2;
   this.txtIP.Text = "";
   //
   // label1
   //
   this.label1.Location = new System.Drawing.Point(8, 32);
   this.label1.Name = "label1";
   this.label1.Size = new System.Drawing.Size(64, 23);
   this.label1.TabIndex = 3;
   this.label1.Text = "服务器：";
   //
   // label2
   //
   this.label2.Location = new System.Drawing.Point(8, 80);
   this.label2.Name = "label2";
   this.label2.Size = new System.Drawing.Size(64, 23);
   this.label2.TabIndex = 4;
   this.label2.Text = "姓名：";
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(384, 125);
   this.Controls.Add(this.label2);
   this.Controls.Add(this.label1);
   this.Controls.Add(this.txtIP);
   this.Controls.Add(this.txtNo);
   this.Controls.Add(this.button1);
   this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
   this.MaximizeBox = false;
   this.MinimizeBox = false;
   this.Name = "Form1";
   this.Text = "抢答客户端";
   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());
  }

  private void button1_Click(object sender, System.EventArgs e)
  {
   if(this.txtIP.Text=="")
   {
    MessageBox.Show("请填写抢答服务器名称。");
    return ;
   }
   if(this.txtNo.Text=="")
   {
    MessageBox.Show("请填写名称。");
    return ;
   }
   UdpClient client=new UdpClient();
   Encoding code=Encoding.GetEncoding("gb2312");
   byte[] bs=code.GetBytes(this.txtNo.Text);
   IPEndPoint remote=new IPEndPoint(IPAddress.Parse(this.txtIP.Text),10000);
   client.Send(bs,bs.Length,remote);
  }

  private void Form1_Load(object sender, System.EventArgs e)
  {
   Thread t=new Thread(new ThreadStart(Read));
   t.IsBackground=true;
   t.Start();
  }
  private void Read()
  {
   UdpClient client=new UdpClient(10001);
   while(true)
   {
    IPEndPoint remote=null;
    Encoding code=Encoding.GetEncoding("gb2312");
    byte[] bs=client.Receive(ref remote);
    string s=code.GetString(bs);
    MessageBox.Show(s);
   }
  }

 }
}

文章来源:http://blog.sina.com.cn/s/blog_49458c27010008sb.html