A simple C# class for demonstrating the use of whois to check the availability of a domain name - code snippet for coderbuddy.wordpress.com

DomainSearch.cs

 public class DomainSearch
 {
        /// <summary>
        /// Check whether a given domain name is available or not
        /// </summary>
        /// <param name="domainName">domain name to be verified</param>
        /// <returns></returns>
        public static bool IsDomainNameAvailable(string domainName)
        {
            string whoisData = Whois.Lookup(domainName);
            string[] ws = whoisData.Split(new string[] { "\r\n", "\n" }, StringSplitOptions.None);
            return ws[7].Contains("No match for domain \"" + domainName.ToUpper() + "\".");
        }
  }

This code uses the Whois.cs code snippet. you can find more info about this code on my blog