Gantt control supports the following keyboard shortcuts for performing various actions
Alt + j: To focus the Gantt control
Home: To select the first row
End: To select the last row
F2: For editing the focused cell of the selected row
Enter: To save the edited cell
Delete: To delete the selected row
Ctrl + Down Arrow: To expand all the parent tasks.
Ctrl + Up Arrow: To collapse all the parent tasks.
Left Arrow: To collapse the selected parent task.
Right Arrow: To expand the selected parent task.