Programmatically set IIS preloadEnabled

Question

Is it possible to set preloadEnabled="true" for Application Initialization? The schema for Application in ServerManager doesn't seem to recognize the attribute, so when I set the following, no changes occur.

ServerManager serverManager = new ServerManager();
application = serverManager.Sites[0].Applications[0];
application.SetAttributeValue["preloadEnabled"] = "true";
serverManager.CommitChanges();

Is it possible to do this through ServerManager, or another way?

Some context: http://www.iis.net/learn/get-started/whats-new-in-iis-8/iis-80-application-initialization

Answer 1

Two things fixed this for me.

1) Using a boolean instead of a string

application.SetAttributeValue["preloadEnabled"] = true;

2) Installing the Application Initialization first.

Answer 2

See this post

As you mentioned, you need to install the module first because by default it is not installed for IIS8. You can do this with a starup task as outlined in Sandrino Di Mattia's answer and blog post (see link).