用于向IIS网站添加主机头的代码

我有一个有很多名字的网站.我希望能够以编程方式向IIS添加新的主机头记录,以允许它识别另一个名称.具体来说,将新主机头添加到给定站点的代码(最好是在C#中)是什么？

static void Main(string[] args)
{
    AddHostHeader(1, "127.0.0.1", 8080, "fred");
    AddHostHeader(1, null, 8081, null);
}

static void AddHostHeader(int? websiteID, string ipAddress, int? port, string hostname)
{
    using (var directoryEntry = new DirectoryEntry("IIS://localhost/w3svc/" + websiteID.ToString()))
    {
        var bindings = directoryEntry.Properties["ServerBindings"];
        var header = string.Format("{0}:{1}:{2}", ipAddress, port, hostname);

        if (bindings.Contains(header))
            throw new InvalidOperationException("Host Header already exists!");

        bindings.Add(header);
        directoryEntry.CommitChanges();
    }
}