想用C#编一个上网计费的软件，请提示思路或例子

Question

首先ping 然后确定已经连接上然后,时间*费用/小时=总费用

Answer 1

http://www.csdn.net/cnshare/soft/13/13721.shtm

Answer 2

这是《c#网络编程》的例子：using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;//新加的
using System.Net.Sockets;//新加的
using System.Threading;//新加的namespace Sock_Conn
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox textBox2;
private IPAddress myIP=IPAddress.Parse("127.0.0.1");//新加的
private IPEndPoint  MyServer;//新加的 
private Socket sock;//新加的 
  
private int i=0;//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.Timer timer1;
private System.Windows.Forms.Button button2;
private System.ComponentModel.IContainer components; public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent(); //
// TODO: Add any constructor code after InitializeComponent call
//
} /// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null) 
{
components.Dispose();
}
}
base.Dispose( disposing );
} #region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.components = new System.ComponentModel.Container();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.textBox1 = new System.Windows.Forms.TextBox();
this.button1 = new System.Windows.Forms.Button();
this.statusBarPanel1 = new System.Windows.Forms.StatusBarPanel();
this.textBox2 = new System.Windows.Forms.TextBox();
this.timer1 = new System.Windows.Forms.Timer(this.components);
this.richTextBox1 = new System.Windows.Forms.RichTextBox();
this.statusBar1 = new System.Windows.Forms.StatusBar();
this.button2 = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).BeginInit();
this.SuspendLayout();
// 
// label1
// 
this.label1.Location = new System.Drawing.Point(24, 32);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(72, 23);
this.label1.TabIndex = 0;
this.label1.Text = "服务器IP：";
// 
// label2
// 
this.label2.Location = new System.Drawing.Point(24, 64);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(72, 23);
this.label2.TabIndex = 2;
this.label2.Text = "请求端口：";
// 
// label3
// 
this.label3.Location = new System.Drawing.Point(24, 96);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(80, 23);
this.label3.TabIndex = 10;
this.label3.Text = "服务信息：";
// 
// textBox1
// 
this.textBox1.Location = new System.Drawing.Point(120, 32);
this.textBox1.Name = "textBox1";
this.textBox1.Size = new System.Drawing.Size(152, 21);
this.textBox1.TabIndex = 1;
this.textBox1.Text = "";
// 
// button1
// 
this.button1.Location = new System.Drawing.Point(72, 168);
this.button1.Name = "button1";
this.button1.TabIndex = 3;
this.button1.Text = "请求连接";
this.button1.Click += new System.EventHandler(this.button1_Click);
// 
// statusBarPanel1
// 
this.statusBarPanel1.Width = 300;
// 
// textBox2
// 
this.textBox2.Location = new System.Drawing.Point(120, 64);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(152, 21);
this.textBox2.TabIndex = 4;
this.textBox2.Text = "6688";
// 
// richTextBox1
// 
this.richTextBox1.Location = new System.Drawing.Point(120, 96);
this.richTextBox1.Name = "richTextBox1";
this.richTextBox1.Size = new System.Drawing.Size(256, 48);
this.richTextBox1.TabIndex = 12;
this.richTextBox1.Text = "";
// 
// statusBar1
// 
this.statusBar1.Location = new System.Drawing.Point(0, 209);
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(376, 20);
this.statusBar1.TabIndex = 6;
// 
// button2
// 
this.button2.Location = new System.Drawing.Point(224, 168);
this.button2.Name = "button2";
this.button2.TabIndex = 13;
this.button2.Text = "断开连接";
this.button2.Click += new System.EventHandler(this.button2_Click);
// 
// Form1
// 
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(376, 229);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
  this.button2,
  this.richTextBox1,
  this.label3,
  this.statusBar1,
  this.textBox2,
  this.button1,
  this.label2,
  this.textBox1,
  this.label1});
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "Form1";
this.Text = "按时收费";
((System.ComponentModel.ISupportInitialize)(this.statusBarPanel1)).EndInit();
this.ResumeLayout(false); }
#endregion /// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main() 
{
Application.Run(new Form1());
} private void button1_Click(object sender, System.EventArgs e)
{
try
{
myIP =IPAddress.Parse(textBox1.Text);

}
catch{MessageBox.Show("您输入的IP地址格式不正确，请重新输入！");}
try
{
MyServer=new IPEndPoint(myIP,Int32.Parse(textBox2.Text));
sock =new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);

sock.Connect(MyServer);

statusBarPanel1.Text="与主机"+textBox1.Text+"端口"+textBox2.Text+"连接成功！";
timer1.Start();
timer1.Tick+= new  EventHandler(aa);
}
catch(Exception ee){MessageBox.Show(ee.Message);}
}

private void aa(Object myObject,EventArgs myEventArgs)
{
timer1.Interval=10000;
i=i+10;

richTextBox1.Text="为主机"+textBox1.Text+"服务时间已达"+i.ToString()+"秒"+"请收费"+i.ToString()+"分钱！";
string str="为您服务时间已达"+i.ToString()+"秒"+"请缴费"+i.ToString()+"分钱！";
Byte[]  bytee=System.Text.Encoding.BigEndianUnicode.GetBytes(str.ToCharArray());
            sock.Send(bytee,bytee.Length,0);



} private void button2_Click(object sender, System.EventArgs e)
{
sock.Close();
}
}
}