That depends, there are a couple of packages available (if you look in the Projects section of this site you should find them) that work to a degree in Umbraco 7.

I say to a degree as if you are using the grid they might not search in it. This means you need to be careful. The same goes for Leblender and Archtype objects.

These are two packages available:

• Umbraco Backoffice Visualization
• RB - Umbraco CleanUp Manager

I wonder if this is as easy to code as:

//Find
var unusedContentTypes = Services.GetAllContentTypes().Select(x => Services.ContentService.Count(x.Alias) > 0);

//Show
<p>Unused doc types:</p>
@foreach(var unusedContentType in unusedContentTypes ){
    <p>@unusedContentType.Name</p>
}

Would be a fun experiment!

Well it's not so simple, but it's close.

A better (yet not perfect) version would be:

var cts = ApplicationContext.Services.ContentTypeService;
var cs = ApplicationContext.Services.ContentService;


//Find
var allUsedAliases = cs.GetRootContent().SelectMany(y => y.Descendants()).Select(x => x.ContentType.Alias).Distinct();
var unusedContentTypes = cts.GetAllContentTypes().Where(x => !allUsedAliases.Any(y => y.Contains(x.Alias)));

And this won't still take into account:

• The home page (the root node). That's because I'm lazy :)
• Any nodes that are used only in compositions
• Any nodes that are used only in Nested Content or similar data types (if any)

Needs work, but I suspect it won't end up in something overly complicated.

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