Filter Web Parts
Filter Web Parts can be very useful in data-rich business intelligence sites. They provide a user interface (usually, and can be hidden) that allows the user to provide search or filter criteria for a query on data such as a database table or a list. When you connect a filter Web Part to one or more Web Parts on the page that have filtering capability, they display filtered results of the query. This section provides concept and How To information for writing your own filter Web Parts and consuming them.