搜索域名是否被注册
要求和这个网站http://www.onlinenic.com/chinese/chk_domain.html 
 实现的功能一样,求代码……   
 语言C#
------解决方案--------------------贴错了,上面是asp的
你可用HttpWebRequest对象来实现
------解决方案--------------------用你那个查了一下 
 我苦想的2个域名原来都被注册了
------解决方案--------------------一个是sina翻过来  anis 
 一个是古龙(骨龙SkeletonDragon) 反过来 dragonSkeleton 
 一个是 四大恶人 4evil.com
------解决方案-------------------- <form id= "Form1 " action= "re.aspx " runat= "server ">  
 域名: www. <Asp:TextBox id= "txtDomain1 " value= " " runat= "server " />  
  <Asp:RadioButton id= "txtDomain2 " GroupName= "RadioGroup1 " text= ".com " checked= "True " runat= "server " />   
  <Asp:RadioButton id= "txtDomain3 " GroupName= "RadioGroup1 " text= ".Net " runat= "server " />   
  <Asp:RadioButton id= "txtDomain4 " GroupName= "RadioGroup1 " text= ".org " runat= "server " />   
  <Asp:RadioButton id= "txtDomain5 " GroupName= "RadioGroup1 " text= ".biz " runat= "server " />   
  <Asp:RadioButton id= "txtDomain6 " GroupName= "RadioGroup1 " text= ".cc " runat= "server " />   
  <Asp:RadioButton id= "txtDomain7 " GroupName= "RadioGroup1 " text= ".cn " runat= "server " />   
  <Asp:Button id= "btnQuery " OnClick= "doQuery " text= "查询 " runat= "server " />  
  <BR>  <HR width= "100% ">  <BR>  
  <Asp:label id= "txtResult " ForeColor= "#0000FF " class= "body " runat= "server " />  
  </form>      
 using System; 
 using System.Data; 
 using System.Configuration; 
 using System.Collections; 
 using System.Web; 
 using System.Web.Security; 
 using System.Web.UI; 
 using System.Web.UI.WebControls; 
 using System.Web.UI.WebControls.WebParts; 
 using System.Web.UI.HtmlControls; 
 using System.IO; 
 using System.Text; 
 using System.Net.Sockets; 
 using System.Net;   
 public partial class Whois : System.Web.UI.Page 
 {  
     String strDomain;  
     String strServer; 
     //http://www.china-channel.com/ 
     //whois.pir.org/ 
     //whois.uwhois.com 
     //whois.internic.net 
     //whois.crsnic.net 
     string strserver1 =  "whois.uwhois.com "; 
     string strserver2 =  "whois.cnnic.net.cn "; 
     public void doQuery(Object sender, EventArgs e) 
     { 
       if (txtDomain2.Checked) 
         { 
             strServer = strserver1; 
           strDomain = txtDomain1.Text + txtDomain2.Text; 
         } 
       if (txtDomain3.Checked) 
         { 
             strServer = strserver1; 
           strDomain = txtDomain1.Text + txtDomain3.Text;                  
         } 
       if (txtDomain4.Checked) 
        { 
            strServer = strserver1; 
           strDomain = txtDomain1.Text + txtDomain4.Text;  
        } 
        if (txtDomain5.Checked)  
        { 
            strServer = strserver1; 
            strDomain = txtDomain1.Text + txtDomain5.Text; 
        } 
        if (txtDomain6.Checked)  
        { 
            strServer = strserver1; 
            strDomain = txtDomain1.Text + txtDomain6.Text; 
        } 
        if (txtDomain7.Checked)