See Also: DataGridBoolColumn Members
The System.Windows.Forms.DataGridBoolColumn derives from the abstract class System.Windows.Forms.DataGridColumnStyle. At run time, the System.Windows.Forms.DataGridBoolColumn contains check boxes in each cell that have three states by default: checked (true), unchecked (false), and DBNull.Value. To use two-state check boxes, set the DataGridBoolColumn.AllowNull property to false.
Properties added to the class include DataGridBoolColumn.FalseValue, DataGridBoolColumn.NullValue, and DataGridBoolColumn.TrueValue. These properties specify the value underlying each of the column's states.