A user can select rows in a single or multiple mode. In multiple mode, a user can select all rows at once. To disable this feature, assign false to the allowSelectAll.
Single Row Selection Demo Multiple Row Selection Demo
To select rows, a user should press Ctrl + A or click the Select All check box in the selection column's header. This check box can also be used to deselect all rows. If a filter is applied, the Select All functionality affects all rows that meet filtering conditions.
If false, this property disables the Select All functionality. In this case, the check box clears selection and is hidden if no rows are selected.
The following selection modes are available in the UI component:
Only one row can be in the selected state at a time.
Several rows can be in the selected state at a time.