OnlineMonitorSystem/HandyControl/HandyControl_Shared/Themes/Styles/MessageBox.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:hc="clr-namespace:HandyControl.Controls"
                    xmlns:interactivity="clr-namespace:HandyControl.Interactivity">

    <Style x:Key="MessageBoxButtonStyle" BasedOn="{StaticResource ButtonDefault}" TargetType="Button">
        <Setter Property="MinWidth" Value="88"/>
        <Setter Property="Visibility" Value="{Binding IsEnabled,RelativeSource={RelativeSource Self},Converter={StaticResource Boolean2VisibilityConverter}}"/>
        <Setter Property="Margin" Value="5,0"/>
    </Style>

    <Style x:Key="MessageBoxPrimaryButtonStyle" BasedOn="{StaticResource ButtonPrimary}" TargetType="Button">
        <Setter Property="MinWidth" Value="88"/>
        <Setter Property="Visibility" Value="{Binding IsEnabled,RelativeSource={RelativeSource Self},Converter={StaticResource Boolean2VisibilityConverter}}"/>
        <Setter Property="Margin" Value="5,0"/>
    </Style>

    <Style TargetType="hc:MessageBox" BasedOn="{StaticResource WindowWin10}">
        <Setter Property="MinHeight" Value="172"/>
        <Setter Property="ShowInTaskbar" Value="False"/>
        <Setter Property="MinWidth" Value="335"/>
        <Setter Property="MaxWidth" Value="476"/>
        <Setter Property="MaxHeight" Value="680"/>
        <Setter Property="ResizeMode" Value="NoResize"/>
        <Setter Property="SizeToContent" Value="WidthAndHeight"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="hc:MessageBox">
                    <Border SnapsToDevicePixels="True" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}">
                        <Grid Margin="{TemplateBinding Padding}">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition/>
                            </Grid.RowDefinitions>
                            <Grid Background="{TemplateBinding NonClientAreaBackground}" Name="PART_NonClientArea" TextElement.Foreground="{TemplateBinding NonClientAreaForeground}">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition/>
                                    <ColumnDefinition Width="Auto"/>
                                </Grid.ColumnDefinitions>
                                <StackPanel WindowChrome.IsHitTestVisibleInChrome="True" UseLayoutRounding="True" VerticalAlignment="Top" Grid.Column="1" HorizontalAlignment="Right" Orientation="Horizontal">
                                    <Button Background="{TemplateBinding CloseButtonBackground}" Foreground="{TemplateBinding CloseButtonForeground}" IsTabStop="False" Name="PART_ButtonClose" Height="29" Style="{StaticResource ButtonIcon}" Width="46" hc:IconElement.Geometry="{StaticResource CloseGeometry}" BorderThickness="1,0,0,0" hc:IconElement.Width="10" hc:IconElement.Height="10"/>
                                </StackPanel>
                                <Grid Grid.Column="0">
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="Auto"/>
                                        <ColumnDefinition Width="Auto"/>
                                        <ColumnDefinition/>
                                    </Grid.ColumnDefinitions>
                                    <Button Name="ButtonIcon" Visibility="{TemplateBinding Icon,Converter={StaticResource Object2VisibilityConverter}}" Command="{x:Static SystemCommands.ShowSystemMenuCommand}" Background="Transparent" Margin="10,0,0,0" WindowChrome.IsHitTestVisibleInChrome="True" Style="{StaticResource ButtonCustom}" VerticalAlignment="Center">
                                        <interactivity:Interaction.Triggers>
                                            <interactivity:EventTrigger EventName="MouseDoubleClick">
                                                <interactivity:InvokeCommandAction Command="{x:Static SystemCommands.CloseWindowCommand}" />
                                            </interactivity:EventTrigger>
                                        </interactivity:Interaction.Triggers>
                                        <Image IsHitTestVisible="False" Source="{TemplateBinding Icon}" VerticalAlignment="Center" Width="16" Height="16"/>
                                    </Button>
                                    <TextBlock Grid.Column="1" Text="{TemplateBinding Title}" Padding="10,0,0,0" VerticalAlignment="Center">
                                        <TextBlock.Visibility>
                                            <MultiBinding Converter="{StaticResource BooleanArr2VisibilityConverter}">
                                                <MultiBinding.Bindings>
                                                    <Binding Path="ShowTitle" RelativeSource="{RelativeSource TemplatedParent}"/>
                                                    <Binding Path="Title" RelativeSource="{RelativeSource TemplatedParent}" Converter="{StaticResource Object2BooleanConverter}"/>
                                                </MultiBinding.Bindings>
                                            </MultiBinding>
                                        </TextBlock.Visibility>
                                    </TextBlock>
                                    <ContentPresenter WindowChrome.IsHitTestVisibleInChrome="True" Grid.Column="2" x:Name="ContentPresenterMain" Content="{TemplateBinding NonClientAreaContent}"/>
                                </Grid>
                            </Grid>
                            <AdornerDecorator Grid.Row="1">
                                <Grid>
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="Auto"/>
                                        <ColumnDefinition/>
                                    </Grid.ColumnDefinitions>
                                    <Grid.RowDefinitions>
                                        <RowDefinition/>
                                        <RowDefinition Height="Auto"/>
                                    </Grid.RowDefinitions>
                                    <Path Data="{TemplateBinding Image}" Fill="{TemplateBinding ImageBrush}" HorizontalAlignment="Center" Visibility="{TemplateBinding ShowImage,Converter={StaticResource Boolean2VisibilityConverter}}" Grid.Row="0" Grid.Column="0" VerticalAlignment="Top" Margin="20,32,0,0" Width="30" Height="30" Stretch="Uniform"/>
                                    <ScrollViewer Grid.Row="0" Grid.Column="1" VerticalAlignment="Top">
                                        <Border MinHeight="30" Margin="10,32,10,10" HorizontalAlignment="Left">
                                            <TextBlock VerticalAlignment="Center" Text="{TemplateBinding Message}" TextWrapping="Wrap" />
                                        </Border>
                                    </ScrollViewer>
                                    <StackPanel Name="PART_Panel" Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="1" Margin="0,10,0,16" Orientation="Horizontal" HorizontalAlignment="Center"/>
                                </Grid>
                            </AdornerDecorator>
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsActive" Value="False">
                            <Setter Property="Opacity" Value=".8" TargetName="ContentPresenterMain"/>
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="True" SourceName="PART_ButtonClose">
                            <Setter Property="Background" TargetName="PART_ButtonClose" Value="{Binding CloseButtonHoverBackground,RelativeSource={RelativeSource TemplatedParent}}"/>
                            <Setter Property="Foreground" TargetName="PART_ButtonClose" Value="{Binding CloseButtonHoverForeground,RelativeSource={RelativeSource TemplatedParent}}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>