property Grid.ShowFocusRect as Boolean
Retrieves or sets a value indicating whether the control draws a thin rectangle around the focused item.

Boolean A boolean expression that indicates whether the marker for the focused cell is visible or hidden.

Use the ShowFocusRect property to hide the rectangle drawn around the focused item. Use the FocusItem property to get the focused item. Use the FocusColumnIndex property to determine the focused column. If there is no focused item the FocusItem property retrieves 0. At one moment, only one item can be focused. When the selection is changed the focused item is changed too. Use the SelectCount property to get the number of selected items. Use the SelectedItem property to get the selected item. Use the SelectItem to select or unselect a specified item. If the control supports only single selection, you can use the FocusItem property to get the selected/focused item because they are always the same.