## How it works

The Optimizely Content Management System (CMS) extension of the `IFrameComponent` has the following additional parameters:

• `UrlFromUtil` – Optional. The URL to the source, relative the Utils folder. Used instead of Url property.

• `UrlFromUi` – Optional. The URL to the source, relative the UI folder. Used instead of Url property.

### Creating MVC component

First you need to add a controller. Controller has to be annotated with an `IframeComponent `attribute.



Then add a _Index.cshtml_ view to the Views/HelloWorld directory: