这篇文章将为大家详细讲解有关C#软件如何编写asp，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
源码：
<% @Page Language="C#" %>
<% @Assembly Name="System.Net" %>
<% @Import Namespace="System.Net.Sockets" %>
<% @Import Namespace="System.Text" %>
<% @Import Namespace="System.IO" %>
<% @Import Namespace="System.Collections" %>
<script language="C#" runat="server">
void doQuery(Object sender, EventArgs e)
{
String strDomain = txtDomain.Text;
char[] chSplit = {'.'};
string[] arrDomain = strDomain.Split(chSplit);
int nLength = arrDomain[1].Length ;
Hashtable table = new Hashtable();
table.Add("de", "whois.denic.de");
table.Add("be", "whois.dns.be");
table.Add("gov", "whois.nic.gov");
table.Add("mil", "whois.nic.mil");
String strServer ; //define whois server
//if the domainname's end is cn then the server is cnnic ,
otherwise is networksolutionsif (arrDomain[arrDomain.Length - 1] == "cn")
{
strServer = "159.226.6.139" ;
}
else
{
strServer = "whois.networksolutions.com";
}
if (table.ContainsKey(arrDomain[1]))
{
strServer = table[arrDomain][1]].ToString();
}
else if (nLength == 2)
{
// 2-letter TLD's always default to RIPE in Europe
strServer = "whois.ripe.net";
}
String strResponse;
bool bSuccess = DoWhoisLookup(strDomain, strServer, out strResponse);
if (bSuccess)
{
txtResult.Text = strResponse;
}
else
{
txtResult.Text = "Lookup failed";
}
}
bool DoWhoisLookup(String strDomain, String strServer, out String strResponse)
{
strResponse = "none";
bool bSuccess = false;
TCPClient tcpc = new TCPClient();
if (0 == tcpc.Connect(strServer, 43))
{
strDomain += "\r\n";
Byte[] arrDomain = Encoding.ASCII.GetBytes(strDomain.ToCharArray());
try
{
Stream s = tcpc.GetStream();
s.Write(arrDomain, 0, strDomain.Length);
StreamReader sr = new StreamReader(tcpc.GetStream(), Encoding.ASCII);
StringBuilder strBuilder = new StringBuilder();
while (-1 != sr.Peek())
{
strBuilder.Append(sr.ReadLine()+"<br>");
}
tcpc.Close();
bSuccess = true;
strResponse = strBuilder.ToString();
}
catch(Exception e)
{
strResponse = e.ToString();
}
return bSuccess;
}
else
{
strResponse = "Could not connect to Whois server";
return false;
}
return false;
}
</script>
<html>
<head>
<title></title>
</head>
<body>
<form runat="server">
Domain name: WWW . <asp:TextBox id="txtDomain" value="" runat="server" />
<asp:Button id="btnQuery" OnClick="doQuery" text="Query!" runat="server" />
<BR><HR width="100%"><BR>
<asp:label id="txtResult" runat="server" />
</form>
</body>
</html>
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