Dns Example
This page was last reviewed on Jun 1, 2023.
Dot Net Perls
Dns. DNS servers resolve host names to IP addresses. With the System.Net namespace in the .NET Framework, we easily perform this task.
A useful method. The Dns.GetHostAddresses method converts a host name to its available IP addresses. An array of IPAddress instances is returned.
An example. Please add the System.Net namespace to the top of your program. We use a host name and pass it to the Dns.GetHostAddresses method. This returns an array of IPAddress classes.
Tip We use the foreach-loop to enumerate the result array. We then call ToString to display our results.
using System; using System.Net; class Program { static void Main() { IPAddress[] array = Dns.GetHostAddresses("en.wikipedia.org"); foreach (IPAddress ip in array) { Console.WriteLine(ip.ToString()); } } }
Notes, program. The program prints the IP addresses for the English Wikipedia host. Try pasting the IP address into your web browser. It will be associated with Wikipedia.
A summary. We saw the Dns.GetHostAddresses method from the System.Net namespace. Sometimes it is useful to have the numeric IP address instead of relying on the host name.
For most programs, it is best to use the host name. The host name can be changed to resolve to a different IP address. This is more reliable.
Dot Net Perls is a collection of tested code examples. Pages are continually updated to stay current, with code correctness a top priority.
Sam Allen is passionate about computer languages. In the past, his work has been recommended by Apple and Microsoft and he has studied computers at a selective university in the United States.
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