Changing Of Checkbox value does not change Binding Column

<CheckBox Width="18"  x:Name="TestCheckBox" IsChecked="{Binding BooleanProperty, Mode=TwoWay}" IsEnabled="True" IsHitTestVisible="True" IsTabStop="True"  />

                dc = new DataColumn("BooleanProperty");
                dc.DataType = typeof(bool);
                dc.AllowDBNull = false;
                dc.DefaultValue = false;
                


                ds.Tables[0].Columns.Add(dc);
               

when i change value checkbox its not reflected in BooleanProperty column