public class IISHelper
    {

public static string SiteName
        {
get
            {
return Config.GetSetting("SiteName");
            }
        }

public static void AddDomianTmSuite(string portalAlias)
        {
using (ServerManager iis = new ServerManager())
            {
                Site site = iis.Sites[SiteName];
if (site != null)
                {
                    Binding binding = GetBinding(site.Bindings, "*:80:" + portalAlias);
if (binding == null)
                    {
                        AddBinding(site.Bindings, "*:80:" + portalAlias);
                    }
                    iis.CommitChanges();
                }
            }
        }

public static void DeleteDomainTmSuite(string portalAlias)
        {
using (ServerManager iis = new ServerManager())
            {
                Site site = iis.Sites[SiteName];
if (site != null)
                {
                    Binding binding = GetBinding(site.Bindings, "*:80:" + portalAlias);
if (binding != null)
                    {
                        site.Bindings.Remove(binding);
                    }
                    iis.CommitChanges();
                }

            }
        }

/// <summary>
/// Get Bingding
/// </summary>
/// <param name="bindings">collection of currnet site bindings</param>
/// <param name="BindingInformation">like *:80:asp.google.tst</param>
/// <returns>null or binding</returns>
        public static Binding GetBinding(BindingCollection bindings, string BindingInformation)
        {
foreach (Binding binding in bindings)
            {
if (binding.BindingInformation.ToLower() == BindingInformation.ToLower())
                {
return binding;
                }
            }

return null;
        }

/// <summary>
/// Add Binding
/// </summary>
/// <param name="bindings">collection of currnet site bindings</param>
/// <param name="BindingInformation">like *:80:asp.google.tst</param>
        public static void AddBinding(BindingCollection bindings, string BindingInformation)
        {
            Binding binding2 = bindings.CreateElement();
            binding2.BindingInformation = BindingInformation;
            binding2.Protocol = @"http";
            bindings.Add(binding2);
        }
    }