Filters use various criteria to “dissect” a data source returning the records required, generally for a gallery, collection or other data gathering exercise.Simple Filters will generally refer to a Control (drop-down/combo box) where the selected value needs to match a field in the data source. In this exercise, the model below is based on a simple data source (a list of PC Devices) with two combo box controls and a text input. All affect the output in the gallery below. The list is sorted by Model Name and completely unfiltered looks like this The first Combo Box is from another list of Manufacturers, with the maker’s name also contained  in…