Viewing source for Recipe2110cs.aspx

<%@ Page Language="c#" Debug="true" %>
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Net" %>
<html>
	<title>Performing a Reverse-DNS 
		Lookup </title>
	<head>
		<script language="c#" runat="server">
		

       void BtnCheck_Click(Object sender,EventArgs e) 
	{
		try
		{
		LblHostName.Text = "";
		IPAddress myIP = IPAddress.Parse(TxtInput.Text);

		IPHostEntry GetIPHost = Dns.GetHostByAddress(myIP);
		
		LblHostName.Text = "Host Name is: " + GetIPHost.HostName;	
		
		}
		catch(Exception ex)
		{
			LblHostName.Text = "<font color=red>Error:" + ex.Message;
		}
        }

		</script>
	</head>
	<body>
		<h3><font face="Verdana"> Domain name for a particular IP address using a revere DNS 
				lookup.</font></h3>
		<form runat="server">
			Please enter IP address for a fully qualified domain name:
			<asp:TextBox id="TxtInput" runat="server" value="207.46.230.220" /><br />
			<asp:Button id="BtnCheck" Text="Click Me" onclick="BtnCheck_Click" runat="server" /><br />
			<br />
			<asp:Label id="LblHostName" runat="server" />
		</form>
	</body>
</html>