asp.net(C#)网站建设用正则表达式取得网址的域名#region 取得网址的域名
/// <summary>
/// 取得网址的域名
/// </summary>
/// <param name="url">网址</param>
/// <returns>返回域名</returns>
private string GetDomain(string url)
{
            string p = @"http://[^\.]*\.(?<domain>[^/]*)";
            Regex reg = new Regex(p, RegexOptions.IgnoreCase);
            Match m = reg.Match(url);
            return m.Groups["domain"].Value;
}
#endregion