I want to build a filer (search) user interface for search results page. Thus a have a few Managed Properties I want users to search by. For example, I have a department property (sting) and I want to have a drop down with all department names. How can I get these values to display in my UI using C# code?
You could probably do this without C#. The Refinements Web Part will display the Managed Properties in results, and you can use an XSLT transformation against this to show the properties in a dropdown.