The data grid component supports different configurations for selection. You can choose to select/unselect rows with API only or on single or double click by setting the 'selection.action' property to 'none', 'click' or 'dblclick'. Clicking on a Grid Row or Column header can also be used for selection just like in Microsoft Excel. The 'selection.mode' property determines whether we will have Single or Multi-Row selection. The allowed values for that property are 'one', 'many' and 'extended'. 'one' allows only single row selection, while 'many' and 'extended' allow multi-row selection. The difference between 'many' and 'extended' Grid selection modes is that in 'extended', users will have to click 'Ctrl' or 'Shift' keyboard keys to perform multiple selection.