<Border BorderThickness="1,1,1,1" BorderBrush="Black" Grid.Column="1">
                        <dxe:DateNavigator SelectedDatesChanged="dateNavigator_SelectedDatesChanged"
                                VerticalAlignment="Stretch" 
                                x:Name="dateNavigator" 
                                HighlightSpecialDates=" True"
                                ShowTodayButton="True"
                                ShowWeekNumbers="True">
                            <dxe:DateNavigator.StyleSettings>
                                <dxsch:SchedulerDateNavigatorStyleSettings 
                                    SchedulerControl="{Binding ElementName=schAppointment}">
                                </dxsch:SchedulerDateNavigatorStyleSettings>
                            </dxe:DateNavigator.StyleSettings>
                            
                        </dxe:DateNavigator>
                    </Border>