scanfriendip.cs

visual c# 网络编程技术与实践实例包括几个源码

using System ;
using System.Drawing ;
using System.Collections ;
using System.ComponentModel ;
using System.Windows.Forms ;
using System.Data ;
using System.Net.Sockets ;
using System.Net ;
using System.Threading; 

namespace 五子棋
{
		public delegate void UpdateList ( string sIP , string sHostName )  ;
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class ScanIP : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.ListBox listBox1;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Label label3;
		public System.Windows.Forms.ProgressBar progressBar1;
		private System.DateTime StartTime  ;
		private System.Windows.Forms.ContextMenu contextMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.Label label5;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public ScanIP()
		{
			//
			// 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.label1 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.listBox1 = new System.Windows.Forms.ListBox();
			this.label4 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.progressBar1 = new System.Windows.Forms.ProgressBar();
			this.contextMenu1 = new System.Windows.Forms.ContextMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.label5 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 24);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(48, 32);
			this.label1.TabIndex = 0;
			this.label1.Text = "IP地址前三：";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(72, 32);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(72, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "202.115.22";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(400, 8);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(72, 64);
			this.button1.TabIndex = 4;
			this.button1.Text = "扫描";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			this.button1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.tbxUrl_KeyDown);
			// 
			// listBox1
			// 
			this.listBox1.ItemHeight = 12;
			this.listBox1.Location = new System.Drawing.Point(8, 104);
			this.listBox1.Name = "listBox1";
			this.listBox1.Size = new System.Drawing.Size(464, 232);
			this.listBox1.TabIndex = 8;
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(296, 8);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(88, 24);
			this.label4.TabIndex = 4;
			this.label4.Text = "用时";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(216, 8);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(40, 21);
			this.textBox2.TabIndex = 2;
			this.textBox2.Text = "0";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(176, 8);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(32, 16);
			this.label2.TabIndex = 6;
			this.label2.Text = "IP起：";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(216, 40);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(40, 21);
			this.textBox3.TabIndex = 3;
			this.textBox3.Text = "255";
			this.textBox3.KeyDown += new System.Windows.Forms.KeyEventHandler(this.tbxUrl_KeyDown);
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(176, 48);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(32, 16);
			this.label3.TabIndex = 8;
			this.label3.Text = "IP终：";
			// 
			// progressBar1
			// 
			this.progressBar1.Location = new System.Drawing.Point(8, 80);
			this.progressBar1.Name = "progressBar1";
			this.progressBar1.Size = new System.Drawing.Size(464, 16);
			this.progressBar1.TabIndex = 9;
			// 
			// contextMenu1
			// 
			this.contextMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
																						 this.menuItem1,
																						 this.menuItem2});
			// 
			// menuItem1
			// 
			this.menuItem1.Index = 0;
			this.menuItem1.Text = "停止";
			// 
			// menuItem2
			// 
			this.menuItem2.Index = 1;
			this.menuItem2.Text = "退出";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(144, 40);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(16, 16);
			this.label5.TabIndex = 10;
			this.label5.Text = "。";
			// 
			// ScanIP
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(480, 342);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.progressBar1);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.textBox3);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.listBox1);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.label1);
			this.Name = "ScanIP";
			this.Text = "主机名扫描";
			this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.tbxUrl_KeyDown);
			this.ResumeLayout(false);

		}
		#endregion

		

		public class ping 
		{
　		 public UpdateList ul; 
　		 public string ip ;
　			//定义一个变量，用以接收传送来的IP地址字符串
　		 public string HostName ;
　		 //定义一个变量，用以向主进展传递对应IP地址是否在线数据
　		 public void scan()
		 {
　　		IPAddress myIP = IPAddress.Parse ( ip ) ;
　　		try 
　　		{
　　　		IPHostEntry myHost = Dns.GetHostByAddress ( myIP );
　　　		HostName = myHost.HostName.ToString ( ) ;
　　		}
　　		catch 
　　		{
　　　		HostName = "" ;
　　		}
　　		if (HostName == "")
　　　		HostName = " 主机没有响应！";
　　		if ( ul != null)
　　　			ul ( ip , HostName );
		 }
　			//定义一个过程（也可以看出为方法），用以判断传送来的IP地址对应计算机是否在线
		}

		void UpdateMyList ( string sIP , string sHostName )
		{
　			//lock(textBox1);
　		　  listBox1.Items.Add ( sIP + " " + sHostName ) ;
　			 if(progressBar1.Value != progressBar1.Maximum)
			 {
　　　		 progressBar1.Value++ ;
			 }
　　		if ( progressBar1.Value == progressBar1.Maximum )
　　		{
　　　		//MessageBox.Show ( "成功完成检测！" , "提示" ) ;
　　 　		DateTime EndTime = DateTime.Now ;
　　　		TimeSpan ts = EndTime-StartTime ; 
　　　		label4.Text = ts.Seconds.ToString ( ) + "秒" ;
　　　		 //显示扫描计算机所需要的时间
　　　		progressBar1.Value = progressBar1.Minimum;
		}
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			button1.Enabled=false;

			listBox1.Items.Clear();
			progressBar1.Minimum=0;
			
	  
			//清楚扫描结果显示区域
　       StartTime = DateTime.Now ;
			//获取当前时间
　       string mask1 =textBox1.Text;
			string mask2 =textBox2.Text;
　        string mask3 =textBox3.Text;
			try
			{
				progressBar1.Maximum=Convert.ToInt32(mask3)-Convert.ToInt32(mask2);
			}
			catch
			{
				MessageBox.Show("请输入正确IP","你懂IP吗？");
				button1.Enabled=true;
				textBox1.Text="";
				textBox2.Text="";
				textBox3.Text="";
				return;
			}
			int i;
			for(i=Convert.ToInt32(mask2,10);i<=Convert.ToInt32(mask3,10);i++)
			{
　			progressBar1.Value=i-Convert.ToInt32(mask2,10);
　　	string ip= mask1.ToString()+"."+i.ToString() ;
				IPAddress myIP=IPAddress.Parse("202.115.22.136");
　　	try
	{
		myIP = IPAddress.Parse ( ip ) ;
　	}
	catch
	{
		  　	MessageBox.Show("IP有误","你懂IP吗？");
		button1.Enabled=true;
		textBox1.Text="";
		textBox2.Text="";
		textBox3.Text="";
		return;
	}
				//根据给定的IP地址字符串，处境IPAddress实例
				int k =Convert.ToInt32(mask3)-Convert.ToInt32(mask2) ;
　　ping HostPing = new ping ( ) ;
				Thread[] mythread = new Thread [k+1] ;
　　//创建一个ping实例
　　HostPing.ip =ip ;
　　HostPing.ul = new UpdateList ( UpdateMyList ) ;
　　//向这个ping实例中传递IP地址字符串
　　mythread[k] = new Thread ( new ThreadStart ( HostPing.scan ) ) ;
　　//初始化一个线程实例
　　mythread[k].Start ( ) ;
　　//启动线程

			}
　　    
		
			//扫描给定IP地址对应的计算机是否在线
　          
			
			DateTime EndTime = DateTime.Now ;
　           TimeSpan ts = EndTime-StartTime ;
			//获得扫描网络计算机所使用的时间
		
　          //listBox1.Items.Add( ts.Seconds.ToString()+ "秒");
			label4.Text="用时"+ts.Seconds.ToString()+"秒";
　          //MessageBox.Show ( "成功完成检测！" , "提示" ) ;
			button1.Enabled=true;
		
		}
		private void tbxUrl_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
		{
			if ( e.KeyData == Keys.Enter && button1.Enabled == true )
			{
				button1_Click( sender, null );
			}
		}
		private void right(object sender, System.Windows.Forms.KeyEventArgs e)
		{
				Point pos=new Point(100,100);
			contextMenu1.Show(button1,pos);
		}
	}
}