ContextMenuのハイライト非表示

###前提・実現したいこと

こんにちは

WPFでボタン押すとContextMenuの中にカレンダーが表示され、
年月を選択できる物を作っています。

カレンダー選択まではうまくいったのですが、
カレンダーの上にカーソルを持っていくと出てくる
青いハイライトがどうしても消えてくれません。

ContextMenuのIsMouseOverTriggerや
FocusVisualStyleをnullにしましたがダメでした。

宜しくお願いします。

###発生している問題

###該当のソースコード

XAML
1<Window x:Class="WpfApplication1.MainWindow"
2        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
5        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
6        xmlns:local="clr-namespace:WpfApplication1"
7        mc:Ignorable="d"
8        Title="MainWindow" Height="200" Width="300">
9    
10    <Window.Resources>
11        <local:MainWindowViewModel x:Key="ViewModel"/>
12
13        <Style x:Key="CalendarButton" TargetType="{x:Type Button}">
14            <Setter Property="ContextMenu">
15                <Setter.Value>
16                    <ContextMenu>
17                        <ContextMenu.Template>
18                            <ControlTemplate>
19                                <Border Name="border">
20                                    <!--<Border.Style>
21                                        <Style TargetType="Border">
22                                            <Setter Property="Margin" Value="-34,-2,-49,-2"/>
23                                        </Style>
24                                    </Border.Style>-->
25                                    <ItemsPresenter/>
26                                </Border>
27                            </ControlTemplate>
28                        </ContextMenu.Template>
29                        <Calendar x:Name="calendar1" DisplayMode="Year" Visibility="Hidden"/>
30                    </ContextMenu>
31                </Setter.Value>
32            </Setter>
33        </Style>
34    </Window.Resources>
35    <Window.DataContext>
36        <StaticResource ResourceKey="ViewModel"/>
37    </Window.DataContext>
38
39    <Grid>
40        <Button
41            Width="150"
42            Height="40"
43            Style="{StaticResource CalendarButton}"
44            Command="{Binding ButtonClickCommand}" CommandParameter="{Binding RelativeSource={RelativeSource Self}}">
45            <Button.InputBindings>
46                <MouseBinding Gesture="RightClick" Command="{Binding RightClickDisableCommand}" CommandParameter="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType=Button,AncestorLevel=1}}"/>
47            </Button.InputBindings>
48            <StackPanel Orientation="Horizontal">
49                <!--<Image Source="/img/calendar.png" Width="24" Height="24" Stretch="Fill"/>-->
50                <TextBlock
51                    Width="85"
52                    Text="{Binding SelectedDate,Mode=OneWay,StringFormat={}{0:yyyy年MM月},UpdateSourceTrigger=PropertyChanged}"
53                    VerticalAlignment="Center"
54                    Margin="5,0,0,0"/>
55            </StackPanel>
56        </Button>
57    </Grid>
58</Window>

C#
1using System;
2using System.ComponentModel;
3using System.Runtime.CompilerServices;
4using System.Windows.Controls;
5using System.Windows.Controls.Primitives;
6using System.Windows.Input;
7
8namespace WpfApplication1
9{
10    public class MainWindowViewModel : INotifyPropertyChanged
11    {
12
13        /// <summary>
14        /// 選択された日付
15        /// </summary>
16        public DateTime SelectedDate
17        {
18            get { return _selectedDate; }
19            set
20            {
21                _selectedDate = value;
22                NotifyPropertyChanged();
23            }
24        } 
25        private DateTime _selectedDate = DateTime.Now.Date;
26
27        /// <summary>
28        /// ContextMenuの表示とカレンダーの選択コマンド
29        /// </summary>
30        public ICommand ButtonClickCommand { get; private set; }
31
32        /// <summary>
33        /// 右クリック時のContextMenuを表示禁止コマンド
34        /// </summary>
35        public ICommand RightClickDisableCommand { get; private set; }
36
37        /// <summary>
38        /// コンストラクタ
39        /// </summary>
40        public MainWindowViewModel()
41        {
42            this.ButtonClickCommand = new ButtonClick();
43            this.RightClickDisableCommand = new RightClickDisable();
44        }
45
46        /// <summary>
47        /// RightClickDisableCommand実装
48        /// </summary>
49        private class RightClickDisable : ICommand
50        {
51            public event EventHandler CanExecuteChanged
52            {
53                add { CommandManager.RequerySuggested += value; }
54                remove { CommandManager.RequerySuggested -= value; }
55            }
56
57            public bool CanExecute(object parameter) { return true; }
58
59            public void Execute(object parameter)
60            {
61                var button = parameter as Button;
62                button.ContextMenu.Visibility = System.Windows.Visibility.Hidden;
63            }
64        }
65
66        /// <summary>
67        /// ButtonClickCommand実装
68        /// </summary>
69        private class ButtonClick : ICommand
70        {
71            public event EventHandler CanExecuteChanged
72            {
73                add { CommandManager.RequerySuggested += value; }
74                remove { CommandManager.RequerySuggested -= value; }
75            }
76
77            public bool CanExecute(object parameter) { return true; }
78
79            public void Execute(object parameter)
80            {
81                var button = parameter as Button;
82                button.ContextMenu.Visibility = System.Windows.Visibility.Visible;
83                button.ContextMenu.PlacementTarget = button;
84                button.ContextMenu.Placement = PlacementMode.Bottom;
85
86                var cal = button.ContextMenu.Items[0] as Calendar;
87                button.ContextMenu.IsOpen = true;
88                cal.DisplayMode = CalendarMode.Month;
89                cal.DisplayMode = CalendarMode.Year;
90                cal.Visibility = System.Windows.Visibility.Visible;
91
92                cal.DisplayModeChanged += Calendar_DisplayModeChanged;
93                button.ContextMenu.Closed += ContextMenu_Closed;
94            }
95
96            private void ContextMenu_Closed(object sender, System.Windows.RoutedEventArgs e)
97            {
98                var contextMenu = sender as ContextMenu;
99                var cal = contextMenu.Items[0] as System.Windows.Controls.Calendar;
100
101                cal.DisplayModeChanged -= Calendar_DisplayModeChanged;
102                contextMenu.Closed -= ContextMenu_Closed;
103            }
104
105            private void Calendar_DisplayModeChanged(object sender, CalendarModeChangedEventArgs e)
106            {
107                var cal = sender as Calendar;
108                var vm = cal.DataContext as MainWindowViewModel;
109
110                if (cal.DisplayMode == CalendarMode.Month)
111                {
112                    var contextMenu = cal.Parent as ContextMenu;
113                    vm.SelectedDate = cal.DisplayDate;
114                    cal.Visibility = System.Windows.Visibility.Hidden;
115                    contextMenu.IsOpen = false;
116                }
117            }
118        }
119
120        #region PropertyChanged実装
121
122        public event PropertyChangedEventHandler PropertyChanged;
123
124        public void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
125        {
126            if (PropertyChanged != null)
127            {
128                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
129            }
130        }
131
132        #endregion
133
134    }
135}
136

###試したこと
Marginを使って調整する事はできましたが
他の方法を知りたいです。

###補足情報(言語/FW/ツール等のバージョンなど)
VisualStudio2015Pro Update3
.Net Framework 4.5.2

行動規範の内容に同意します

回答2件

コード貼っておきます

XAML
1<Window x:Class="WpfApplication1.MainWindow"
2        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
5        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
6        xmlns:local="clr-namespace:WpfApplication1"
7        mc:Ignorable="d"
8        Title="MainWindow" Height="200" Width="360">
9
10    <Window.Resources>
11        <local:MainWindowViewModel x:Key="ViewModel"/>
12    </Window.Resources>
13    <Window.DataContext>
14        <StaticResource ResourceKey="ViewModel"/>
15    </Window.DataContext>
16    
17    <Grid>
18        <StackPanel Orientation="Vertical" Width="150" Height="40">
19            <ToggleButton
20                        x:Name="calendarButton"
21                        Height="{Binding Height,RelativeSource={RelativeSource FindAncestor,AncestorLevel=1,AncestorType={x:Type StackPanel}}}"
22                        Command="{Binding ButtonClickCommand}"
23                        CommandParameter="{Binding RelativeSource={RelativeSource Self}}">
24                <StackPanel Orientation="Horizontal">
25                    <!--<Image Source="/img/calendar.png" Width="24" Height="24" Stretch="Fill"/>-->
26                    <TextBlock
27                                Width="85"
28                                Text="{Binding SelectedDate,StringFormat={}{0:yyyy年MM月},UpdateSourceTrigger=PropertyChanged}"
29                                VerticalAlignment="Center"
30                                Margin="5,0,0,0"/>
31                </StackPanel>
32            </ToggleButton>
33            <Popup x:Name="calendarButtonPopup" IsOpen="{Binding IsChecked,ElementName=calendarButton}" PlacementTarget="{Binding ElementName=calendarButton}" Placement="Bottom">
34                <Calendar x:Name="calendar1" Margin="0,-3,0,-3"/>
35            </Popup>
36        </StackPanel>
37    </Grid>
38</Window>

C#
1using System;
2using System.ComponentModel;
3using System.Runtime.CompilerServices;
4using System.Windows.Controls;
5using System.Windows.Controls.Primitives;
6using System.Windows.Input;
7
8namespace WpfApplication23
9{
10    public class MainWindowViewModel : INotifyPropertyChanged
11    {
12
13        /// <summary>
14        /// 選択された日付
15        /// </summary>
16        public DateTime SelectedDate
17        {
18            get { return _selectedDate; }
19            set
20            {
21                _selectedDate = value;
22                NotifyPropertyChanged();
23            }
24        } 
25        private DateTime _selectedDate = DateTime.Now.Date;
26
27        /// <summary>
28        /// ContextMenuの表示とカレンダーの選択コマンド
29        /// </summary>
30        public ICommand ButtonClickCommand { get; private set; }
31
32        /// <summary>
33        /// コンストラクタ
34        /// </summary>
35        public MainWindowViewModel()
36        {
37            this.ButtonClickCommand = new ButtonClick();
38        }
39
40        /// <summary>
41        /// ButtonClickCommand実装
42        /// </summary>
43        private class ButtonClick : ICommand
44        {
45            public event EventHandler CanExecuteChanged
46            {
47                add { CommandManager.RequerySuggested += value; }
48                remove { CommandManager.RequerySuggested -= value; }
49            }
50
51            public bool CanExecute(object parameter) { return true; }
52
53            public void Execute(object parameter)
54            {
55                var button = parameter as ToggleButton;
56                var popup = button.FindName("calendarButtonPopup") as Popup;
57                var cal = popup.FindName("calendar1") as Calendar;
58
59                cal.DisplayMode = CalendarMode.Year;
60                cal.DisplayModeChanged -= Calendar_DisplayModeChanged;
61                cal.DisplayModeChanged += Calendar_DisplayModeChanged;
62            }
63
64            private void Calendar_DisplayModeChanged(object sender, CalendarModeChangedEventArgs e)
65            {
66                var cal = sender as Calendar;
67
68                if (cal.DisplayMode == CalendarMode.Month)
69                {
70                    (cal.DataContext as MainWindowViewModel).SelectedDate = cal.DisplayDate;
71                    (cal.Parent as Popup).IsOpen = false;
72                    cal.DisplayModeChanged -= Calendar_DisplayModeChanged;
73                }
74            }
75        }
76
77        #region PropertyChanged実装
78
79        public event PropertyChangedEventHandler PropertyChanged;
80
81        public void NotifyPropertyChanged([CallerMemberName] String propertyName = "")
82        {
83            if (PropertyChanged != null)
84            {
85                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
86            }
87        }
88
89        #endregion
90
91    }
92}
93