Data filtering refers to setting conditions on data so that only specific data is displayed. Filtered data is easier to analyze and allows you to focus on specific information in a large set of data.

DataFilter for WPF is a control which allows users to filter data on the basis of filter criteria or conditions. It can be used in conjunction with data-aware controls like grids, lists, tree-view, charts or maps including standard MS data-aware controls.

For instance, the DataFilter control provides a handy and convenient way to perform desired filtering on a grid that does not have built-in filtering support. The DataFilter control can also be used to build filters similar to the ones you see in different e-commerce websites where the grid displaying a product listing shows only specific attributes, such as product name and product image. However, you can set filters for a specific brand, category, price etc using the DataFilter control. Such filters cannot be set from column filters in the data grid controls.