v8-9: IHtmlString not recognised

[LottePitcher]

In a few view models in the v8 site we used a IHtmlString property (in System.Web) usually to hold the content from a rich text editor.

v8

public IHtmlString Text { get; set; }

And then the property displays correctly in a view using:

@Model.Text

v9

IHtmlString doesn't exist any more, but we discovered IHtmlEncodedString, in Umbraco.Cms.Core.Strings so used:

public IHtmlEncodedString Text { get; set; }

which we figured should do the job. However @Model.Text was now displaying the encoded version of the string, so we needed to use:

@Html.Raw(Model.Text)

With hindsight it feels a bit odd that the v8 version didn't need the Html.Raw method, but hey ho!