c# – 我可以在WPF中设置窗口边框颜色吗？

这是样例窗口样式：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
                      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> 
    <Style x:Key="MainWindow" 
           TargetType="{x:Type Window}"> 
        <Setter Property="Foreground" 
                Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}" /> 
        <Setter Property="Template"> 
            <Setter.Value> 
                <ControlTemplate TargetType="{x:Type Window}"> 
                    <Grid> 
                        <Border x:Name="MainBorder" 
                                BorderBrush="{DynamicResource MainWindowBorderBrush}" 
                                BorderThickness="1" 
                                CornerRadius="2" 
                                Background="{DynamicResource MainWindowBackgroundBrush}"> 
                            <DockPanel LastChildFill="True"> 
                                <Rectangle x:Name="PART_LEFT_BORDER" 
                                           Width="2" 
                                           Cursor="SizeWE"> 
                                    <Rectangle.Fill> 
                                        <SolidColorBrush Color="Transparent" /> 
                                    </Rectangle.Fill> 
                                </Rectangle> 
                                <Rectangle x:Name="PART_RIGHT_BORDER" 
                                           Cursor="SizeWE" 
                                           Width="2" 
                                           DockPanel.Dock="Right"> 
                                    <Rectangle.Fill> 
                                        <SolidColorBrush Color="Transparent" /> 
                                    </Rectangle.Fill> 
                                </Rectangle> 
                                <Rectangle x:Name="PART_TOP_BORDER" 
                                           Cursor="SizeNS" 
                                           DockPanel.Dock="Top" 
                                           Height="2"> 
                                    <Rectangle.Fill> 
                                        <SolidColorBrush Color="Transparent" /> 
                                    </Rectangle.Fill> 
                                </Rectangle> 
                                <Rectangle x:Name="PART_BOTTOM_BORDER" 
                                           Cursor="SizeNS" 
                                           Height="2" 
                                           DockPanel.Dock="Bottom"> 
                                    <Rectangle.Fill> 
                                        <SolidColorBrush Color="Transparent" /> 
                                    </Rectangle.Fill> 
                                </Rectangle> 
                                <Border x:Name="PART_TITLEBAR" 
                                        Margin="2,2,2" 
                                        Height="40" 
                                        DockPanel.Dock="Top" 
                                        CornerRadius="2" 
                                        Background="Transparent"> 
                                    <DockPanel LastChildFill="False"> 
                                        <TextBlock Margin="8,4" 
                                                   VerticalAlignment="Center" 
                                                   FontStretch="UltraExpanded" 
                                                   Foreground="Black" 
                                                   TextTrimming="CharacterEllipsis" 
                                                   TextWrapping="NoWrap" 
                                                   Text="{TemplateBinding Title}" 
                                                   FontSize="16" /> 
                                        <Button x:Name="PART_CLOSE" 
                                                DockPanel.Dock="Right" 
                                                Style="{DynamicResource FlatButton}" 
                                                VerticalAlignment="Center" 
                                                Margin="0,4,0"> 
                                            <Image Source="/MixModes.Synergy.Resources;
                        component/Resources/Close.png" 
                                                   Stretch="None" 
                                                   Margin="4" /> 
                                        </Button> 
                                        <Button x:Name="PART_MAXIMIZE_RESTORE" 
                                                DockPanel.Dock="Right" 
                                                HorizontalAlignment="Center" 
                                                VerticalAlignment="Center" 
                                                Style="{DynamicResource FlatButton}"> 
                                            <Image x:Name="MaximizeRestoreImage" 
                                                   Source="/MixModes.Synergy.Resources;
                        component/Resources/Restore.png" 
                                                   Stretch="None" 
                                                   Margin="4" /> 
                                        </Button> 
                                        <Button x:Name="PART_MINIMIZE" 
                                                HorizontalAlignment="Center" 
                                                Style="{DynamicResource FlatButton}" 
                                                VerticalAlignment="Center" 
                                                DockPanel.Dock="Right"> 
                                            <Image Margin="4" 
                                                   Source="/MixModes.Synergy.
                        Resources;component/Resources/
                        Minimize.png" 
                                                   Stretch="None" /> 
                                        </Button> 
                                    </DockPanel> 
                                </Border>

                                <!-- Title bar separator--> 
                                <Border Height="1" 
                                        DockPanel.Dock="Top" 
                                        Background="{DynamicResource 
                    MainWindowTitleBarSeparator}" />

                                <!-- Actual Window Content --> 
                                <AdornerDecorator DockPanel.Dock="Bottom"> 
                                    <ContentPresenter /> 
                                </AdornerDecorator> 
                            </DockPanel> 
                        </Border> 
                    </Grid> 
                    <ControlTemplate.Triggers>                        
                        <DataTrigger Binding="{Binding RelativeSource=
                {RelativeSource Self},Path=Maximized}" 
                                     Value="False"> 
                            <Setter TargetName="MaximizeRestoreImage" 
                                    Property="Source" 
                                    Value="/MixModes.Synergy.Resources;
                component/Resources/Maximize.png" /> 
                        </DataTrigger> 
                    </ControlTemplate.Triggers> 
                </ControlTemplate> 
            </Setter.Value> 
        </Setter> 
    </Style> 
</ResourceDictionary>

结果将如下所示：

阅读更多关于Create Custom Windows in WPF with Ease