MainWindow.xaml

<tb:TaskbarIcon IconSource="/ShikiDesk;component/Resources/Images/ico/shiki_icon_lYD_2.ico"
                ToolTipText="ShikiDesk"
                TrayMouseDoubleClick="ShowWindow">
    <tb:TaskbarIcon.ContextMenu>
        <ContextMenu>
            <MenuItem Header="Показать окно" Click="ShowWindow"/>
            <MenuItem Header="Выход" Click="ExitButton_Click"/>
        </ContextMenu>
    </tb:TaskbarIcon.ContextMenu>
</tb:TaskbarIcon>