In this video, you will learn how to do write code that reacts to events in the WebCombo, and how to set up a filter query using the built in data sources in ASP.NET and apply the filter to a WebGrid. You will gain a basic understanding of how to create master-detail scenarios in WebCombo and WebGrid, how to get row and cell based data in the WebGrid, and how to use this data to apply filters to the WebGrid.