11.8. Resolve a Host Name to an IP Address
Problem
You want to determine the IP address for a computer based on its fully qualified domain name by performing a DNS query.
Solution
Use the method GetHostEntry of the System.Net.Dns class, and pass the computer's fully qualified domain name as a string parameter.
How It Works
On the Internet, the human-readable names that refer to computers are mapped to IP addresses, which is what TCP/IP requires in order to communicate between computers. For example, the name www.apress.com might be mapped to the IP address 65.19.150.100. To determine the IP address for a given name, the computer contacts a DNS server. The name or IP address of the DNS server contacted is configured as part of a computer's network ...
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