以下是源代码，现在这个只能查询.Com/.Net/.Org/.Cn 域名Whois的信息，查询其他的就根据这个原理找个其他的网站抓一下信息就行了。
<% @Page Language="C#" %> <% @Import Namespace="System.Net.Sockets" %> <% @Import Namespace="System.Text" %> <% @Import Namespace="System.IO" %> <html> <head> <title>.Com/.Net/.Org/.Cn 域名Whois信息查询</title> <meta name="keywords" content=".Com,.Net,.Org,.Cn 域名Whois信息查询"> <meta name="generator" content=".Com/.Net/.Org,.Cn 域名Whois信息查询"> <meta name="description" content=".Com/.Net/.Org,.Cn 域名Whois信息查询"> <style> <!-- body,input{ font-family: Tahoma, Verdana; color: #004080; font-size: 12px } a:link,a:visited{ text-decoration: none; color: #004080 } --> </style> </head> <body> <form id="fmQuery" runat="server"> 要查询的域名域名: www.<asp:TextBox id="txtDomain" width="100" value="ASPXBOY.COM" runat="server" /> <asp:Button id="btnQuery" OnClick="btn_click" text="查询!" runat="server" />（只能查询.Com/.Net/.Org/.Cn 域名Whois的信息） <a href ="WhoisCode.htm" title="View the source code here!">源代码在这里</a> <BR><HR width="550" height="1" align="left"><BR> <asp:label id="lblResult" runat="server" /> </form> </body> </html> <script language="C#" runat="server"> void btn_click(Object sender, EventArgs e) { String strServer; String strDomain = txtDomain.Text; String strServerCom = "whois.networksolutions.com"; String strServerCN = "whois.cnnic.net.cn"; String strResponse; string[] arrDomain = strDomain.Split('.'); if (arrDomain[1].ToUpper()=="CN") { strServer=strServerCN; } else { strServer=strServerCom; } bool blSuccess = IsWhosisSuccess(strDomain, strServer, out strResponse); if (blSuccess) { lblResult.Text = strResponse; } else { lblResult.Text = "查找失败...."; } } bool IsWhosisSuccess(String strDomain, String strServer, out String strResponse) { strResponse = "none"; bool blSuccess = false; TcpClient tcpc = new TcpClient(); try { tcpc.Connect(strServer, 43); } catch(SocketException ex) { strResponse = "连接不到该 Whois server,请稍后再试。"; return false; } strDomain += "\r\n"; Byte[] arrDomain = Encoding.UTF8.GetBytes(strDomain.ToCharArray()); try { Stream s = tcpc.GetStream(); s.Write(arrDomain, 0, strDomain.Length); StreamReader sr = new StreamReader(tcpc.GetStream(), Encoding.UTF8); StringBuilder strBuilder = new StringBuilder(); string strLine = null; while (null != (strLine = sr.ReadLine())) { strBuilder.Append(strLine+"<br>"); } tcpc.Close(); blSuccess = true; string my="Go to Huobazi's WebSite：<a href=\"http://www.aspxboy.com\" title=\".Net男孩社区\">www.AspxBoy.Com</a><br>"; strResponse = strBuilder.ToString()+my; } catch(Exception e) { strResponse = e.ToString(); } return blSuccess; } </script>
