Discovering open source WPF components – Orc.Search

In the discovering open source WPF components series, I will look into useful open source components that can be used to create WPF apps. This weeks component is Orc.Search.

Most applications sooner or later need a search functionality. Since most .net applications work with models (objects containing the actual information users want to search for), it might be hard to implement such functionality.

A great open-source search engine for indexing and searching is, but it requires quite some work to implement it from scratch in an application. Orc.Search provides a great wrapper around in 3 simple steps. Of course it also comes with xaml controls to easily add search boxes with status indicators to your applications.

Step 1: decorate your models with the right attributes

An alternative to using attributes is to implement a custom IMetadataProvider (you are never forced to only use attributes).

Step 2: Add the projects to the search service

Step 3: Use the Search method

Once the objects are indexed, you can easily use the search method to search for any values:

Enjoy your results!


  • Mitchell Knook

    Hi Geert. Is it possible to also search through items in a collection property?

    • Isn’t that what this example is doing? You can basically add anything in there.

      • Mitchell Knook

        No what i mean is, you’re searching through a collection of objects. But i would also like to search through a collection that is a property of the object.

        • You can create wrappers for any object type. One of the wrappers you would implement is one that loops through the collections, but the hard thing will be that the collection is probably mutable and you’ll need to keep your index up to date.