SolrNet - How to get search filter options

If I made a search for "TV" I want to have search filters on the sidebar which gives me o开发者_运维知识库ptions like following...

Brand

Sony (10)

Samsung(5)

Panasonic(3)

When I click on SONY, it will only return Sony tvs.

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This is called 'faceting'. Check out Facets in SolrNet and Solr faceting overview.

Also, the SolrNet sample app implements facets, you can use it for guidance.