How to add IIS handler mapping programmatically

Question

I'm looking for a way to add a handler mapping in IIS 7 using Microsoft.Web.Administration.dll. Is there a method I can use on the ServerManager object?

These are the steps to follow if adding through the GUI, but again, I need to accomplish this programmatically. http://coderock.net/how-to-create-a-handler-mapping-for-an-asp-net-iis-7-with-application-running-in-integrated-mode/

This is the code I am using to enable ISAPI restrictions, is there something similar for handler mappings?

public override void AddIsapiAndCgiRestriction(string description, string path, bool isAllowed)
{
    using (ServerManager serverManager = new ServerManager())
    {
        Configuration config = serverManager.GetApplicationHostConfiguration();
        ConfigurationSection isapiCgiRestrictionSection = config.GetSection("system.webServer/security/isapiCgiRestriction");
        ConfigurationElementCollection isapiCgiRestrictionCollection = isapiCgiRestrictionSection.GetCollection();
        ConfigurationElement addElement = isapiCgiRestrictionCollection.CreateElement("add");
        addElement["path"] = path;
        addElement["allowed"] = isAllowed;
        addElement["description"] = description;
        isapiCgiRestrictionCollection.Add(addElement);
        serverManager.CommitChanges();
    }
}

Answer 1

This is the solution I ended up using:

public void AddHandlerMapping(string siteName, string name, string executablePath)
{
    using (ServerManager serverManager = new ServerManager())
    {
        Configuration siteConfig = serverManager.GetApplicationHostConfiguration();
        ConfigurationSection handlersSection = siteConfig.GetSection("system.webServer/handlers", siteName);
        ConfigurationElementCollection handlersCollection = handlersSection.GetCollection();

        bool exists = handlersCollection.Any(configurationElement => configurationElement.Attributes["name"].Value.Equals(name));

        if (!exists)
        {
            ConfigurationElement addElement = handlersCollection.CreateElement("add");
            addElement["name"] = name;
            addElement["path"] = "*";
            addElement["verb"] = "*";
            addElement["modules"] = "IsapiModule";
            addElement["scriptProcessor"] = executablePath;
            addElement["resourceType"] = "Unspecified";
            addElement["requireAccess"] = "None";
            addElement["preCondition"] = "bitness32";
            handlersCollection.Add(addElement);
            serverManager.CommitChanges();
        }
    }
}