The index of the last selected column (or the last column added to the selection).
When multiple columns are selected, this property contains only the index of the last one in the selection. If no column is selected, the value of this property is
Selecting Columns and Rows
Returns a Boolean value that indicates whether the column at the specified index is selected.
The index of the last selected row (or the last row added to the selection).
Deselects the row at the specified index if it’s selected.
Returns a Boolean value that indicates whether the row at the specified index is selected.
Selects all rows or all columns, according to whether rows or columns were most recently selected.
Deselects all selected rows or columns if empty selection is allowed; otherwise does nothing.