ASP.NET域名查询系统

　2007-12-15 09:30:38　来源：WEB开发网　　　

核心提示：<% @Page Language="C#" %><% @Import Namespace="System.Net.Sockets" %><% @Import Namespace="System.Text" %><%

<% @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>

</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"
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;

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