Desktop
WPF
When you first add the RadGridView to your WPF application you will undoubtedly notice the section at the top of the control which I have outlined in red. This area is officially called the GridViewGroupPanel, but I am just going to call it the Group Panel to save myself some typing. The Group Panel allows the user to drag and drop column headers into the panel in order to group the data in the RadGridView at runtime. Below you will see that I have grouped my data by the "Make" column in my grid of vehicles. Additionally, the sort order of...