一、查看TabControl原样式

<ControlTemplate TargetType="{x:Type TabControl}">

    <Grid x:Name="templateRoot" ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">

        <Grid.ColumnDefinitions>

            <ColumnDefinition x:Name="ColumnDefinition0"/>

            <ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>

        </Grid.ColumnDefinitions>

        <Grid.RowDefinitions>

            <RowDefinition x:Name="RowDefinition0" Height="Auto"/>

            <RowDefinition x:Name="RowDefinition1" Height="*"/>

        </Grid.RowDefinitions>

        <TabPanel x:Name="headerPanel" Background="Transparent" Grid.Column="0" IsItemsHost="true" Margin="2,2,2,0" Grid.Row="0" KeyboardNavigation.TabIndex="1" Panel.ZIndex="1"/>

        <Border x:Name="contentPanel" Background="{TemplateBinding Background}" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Grid.Column="0" KeyboardNavigation.DirectionalNavigation="Contained" Grid.Row="1" KeyboardNavigation.TabNavigation="Local" KeyboardNavigation.TabIndex="2">

            <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>

        </Border>

    </Grid>

    <ControlTemplate.Triggers>

        <Trigger Property="TabStripPlacement" Value="Bottom">

            <Setter Property="Grid.Row" TargetName="headerPanel" Value="1"/>

            <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>

            <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>

            <Setter Property="Height" TargetName="RowDefinition1" Value="Auto"/>

            <Setter Property="Margin" TargetName="headerPanel" Value="2,0,2,2"/>

        </Trigger>

        <Trigger Property="TabStripPlacement" Value="Left">

            <Setter Property="Grid.Row" TargetName="headerPanel" Value="0"/>

            <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>

            <Setter Property="Grid.Column" TargetName="headerPanel" Value="0"/>

            <Setter Property="Grid.Column" TargetName="contentPanel" Value="1"/>

            <Setter Property="Width" TargetName="ColumnDefinition0" Value="Auto"/>

            <Setter Property="Width" TargetName="ColumnDefinition1" Value="*"/>

            <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>

            <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>

            <Setter Property="Margin" TargetName="headerPanel" Value="2,2,0,2"/>

        </Trigger>

        <Trigger Property="TabStripPlacement" Value="Right">

            <Setter Property="Grid.Row" TargetName="headerPanel" Value="0"/>

            <Setter Property="Grid.Row" TargetName="contentPanel" Value="0"/>

            <Setter Property="Grid.Column" TargetName="headerPanel" Value="1"/>

            <Setter Property="Grid.Column" TargetName="contentPanel" Value="0"/>

            <Setter Property="Width" TargetName="ColumnDefinition0" Value="*"/>

            <Setter Property="Width" TargetName="ColumnDefinition1" Value="Auto"/>

            <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>

            <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>

            <Setter Property="Margin" TargetName="headerPanel" Value="0,2,2,2"/>

        </Trigger>

        <Trigger Property="IsEnabled" Value="false">

            <Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>

        </Trigger>

    </ControlTemplate.Triggers>

</ControlTemplate>

分析原有样式

由上图可知TabControl由TabPanel和ContentPresenter两部分组成，并被一个两行两列的Grid包裹

分析上图触发器部分，TabStripPlacement控制着TabPanel和ContentPresenter 在网格中的位置

接着查看TabItem原有样式

<ControlTemplate TargetType="{x:Type TabItem}">

    <Grid x:Name="templateRoot" SnapsToDevicePixels="true">

        <Border x:Name="mainBorder" Background="{TemplateBinding Background}" BorderThickness="1,1,1,0" BorderBrush="{TemplateBinding BorderBrush}" Margin="0">

            <Border x:Name="innerBorder" Background="{StaticResource TabItem.Selected.Background}" BorderThickness="1,1,1,0" BorderBrush="{StaticResource TabItem.Selected.Border}" Margin="-1" Opacity="0"/>

        </Border>

        <ContentPresenter x:Name="contentPresenter" ContentSource="Header" Focusable="False" HorizontalAlignment="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>

    </Grid>

    <ControlTemplate.Triggers>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Left"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,0,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,0,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Bottom"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,0,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,0,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Right"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="0,1,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="0,1,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Top"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.MouseOver.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,1,0"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,1,0"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsEnabled, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Left"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Opacity" TargetName="contentPresenter" Value="0.56"/>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,0,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,0,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsEnabled, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Bottom"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Opacity" TargetName="contentPresenter" Value="0.56"/>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,0,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,0,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsEnabled, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Right"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Opacity" TargetName="contentPresenter" Value="0.56"/>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="0,1,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="0,1,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsEnabled, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Top"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Opacity" TargetName="contentPresenter" Value="0.56"/>

            <Setter Property="Background" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Background}"/>

            <Setter Property="BorderBrush" TargetName="mainBorder" Value="{StaticResource TabItem.Disabled.Border}"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,1,0"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,1,0"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Left"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,0,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,0,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Left"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Panel.ZIndex" Value="1"/>

            <Setter Property="Margin" Value="-2,-2,0,-2"/>

            <Setter Property="Opacity" TargetName="innerBorder" Value="1"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,0,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,0,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Bottom"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,0,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,0,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Bottom"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Panel.ZIndex" Value="1"/>

            <Setter Property="Margin" Value="-2,0,-2,-2"/>

            <Setter Property="Opacity" TargetName="innerBorder" Value="1"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,0,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,0,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Right"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="0,1,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="0,1,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Right"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Panel.ZIndex" Value="1"/>

            <Setter Property="Margin" Value="0,-2,-2,-2"/>

            <Setter Property="Opacity" TargetName="innerBorder" Value="1"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="0,1,1,1"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="0,1,1,1"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="false"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Top"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,1,0"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,1,0"/>

        </MultiDataTrigger>

        <MultiDataTrigger>

            <MultiDataTrigger.Conditions>

                <Condition Binding="{Binding IsSelected, RelativeSource={RelativeSource Self}}" Value="true"/>

                <Condition Binding="{Binding TabStripPlacement, RelativeSource={RelativeSource AncestorType={x:Type TabControl}}}" Value="Top"/>

            </MultiDataTrigger.Conditions>

            <Setter Property="Panel.ZIndex" Value="1"/>

            <Setter Property="Margin" Value="-2,-2,-2,0"/>

            <Setter Property="Opacity" TargetName="innerBorder" Value="1"/>

            <Setter Property="BorderThickness" TargetName="innerBorder" Value="1,1,1,0"/>

            <Setter Property="BorderThickness" TargetName="mainBorder" Value="1,1,1,0"/>

        </MultiDataTrigger>

    </ControlTemplate.Triggers>

</ControlTemplate>

TabItem由ContentPresenter和两个Border组成（内外边框）

二、优化原有样式

去除内边框并简化触发器

    <Style x:Key="MTabControl.TabItemStyle" TargetType="{x:Type TabItem}">

        <Setter Property="FocusVisualStyle" Value="{x:Null}"/>

        <Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:MTabControl}},Path=HeaderForeground}"/>

        <Setter Property="BorderBrush" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:MTabControl}},Path=HeaderBorderBrush}"/>

        <Setter Property="Background" Value="{DynamicResource ColorBrush.TabControlHeaderBackground}"/>

        <Setter Property="HorizontalContentAlignment" Value="Center"/>

        <Setter Property="VerticalContentAlignment" Value="Center"/>

        <Setter Property="MinWidth" Value="100"/>

        <Setter Property="MinHeight" Value="40"/>

        <Setter Property="FontSize" Value="16"/>

        <Setter Property="Template">

            <Setter.Value>

                <ControlTemplate TargetType="{x:Type TabItem}">

                    <Grid SnapsToDevicePixels="true">

                        <Grid SnapsToDevicePixels="true">

                            <Border x:Name="PART_Border" Background="{TemplateBinding Background}"

                                    BorderThickness="0,0,0,2" BorderBrush="{TemplateBinding BorderBrush}" Padding="{TemplateBinding Padding}">

                                <ContentPresenter x:Name="contentPresenter" ContentSource="Header" Focusable="False"

                                                  HorizontalAlignment="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"

                                                  Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"

                                                  VerticalAlignment="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>

                            </Border>

                        </Grid>

                    </Grid>

                    <ControlTemplate.Triggers>

                        <Trigger Property="IsSelected" Value="true">

                            <Setter Property="Panel.ZIndex" Value="1"/>

                            <Setter Property="Background" TargetName="PART_Border" Value="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:MTabControl}},Path=HeaderBackground}"/>

                            <Setter Property="Foreground" Value="{DynamicResource ColorBrush.FontPrimaryColor}"/>

                        </Trigger>

                        <Trigger Property="TabStripPlacement" Value="Bottom">

                            <Setter Property="BorderThickness" TargetName="PART_Border" Value="0,2,0,0"/>

                        </Trigger>

                        <Trigger Property="TabStripPlacement" Value="Left">

                            <Setter Property="BorderThickness" TargetName="PART_Border" Value="0,0,2,0"/>

                        </Trigger>

                        <Trigger Property="TabStripPlacement" Value="Right">

                            <Setter Property="BorderThickness" TargetName="PART_Border" Value="2,0,0,0"/>

                        </Trigger>

                    </ControlTemplate.Triggers>

                </ControlTemplate>

            </Setter.Value>

        </Setter>

    </Style>

    <Style TargetType="{x:Type local:MTabControl}">

        <Setter Property="Foreground" Value="{DynamicResource ColorBrush.FontDefaultColor}"/>

        <Setter Property="Padding" Value="0"/>

        <Setter Property="BorderThickness" Value="0"/>

        <Setter Property="BorderBrush" Value="{DynamicResource ColorBrush.PrimaryBorderBrushColor}"/>

        <Setter Property="Background" Value="{DynamicResource ColorBrush.FontDefaultColorV3}"/>

        <Setter Property="HorizontalContentAlignment" Value="Center"/>

        <Setter Property="VerticalContentAlignment" Value="Center"/>

        <Setter Property="ItemContainerStyle" Value="{StaticResource MTabControl.TabItemStyle}"/>

        <Setter Property="Template">

            <Setter.Value>

                <ControlTemplate TargetType="{x:Type local:MTabControl}">

                    <Border BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" >

                        <Grid ClipToBounds="true" SnapsToDevicePixels="true" KeyboardNavigation.TabNavigation="Local">

                            <Grid.ColumnDefinitions>

                                <ColumnDefinition x:Name="ColumnDefinition0"/>

                                <ColumnDefinition x:Name="ColumnDefinition1" Width="0"/>

                            </Grid.ColumnDefinitions>

                            <Grid.RowDefinitions>

                                <RowDefinition x:Name="RowDefinition0" Height="Auto"/>

                                <RowDefinition x:Name="RowDefinition1" Height="*"/>

                            </Grid.RowDefinitions>

                            <UniformGrid x:Name="HeaderPanel" HorizontalAlignment="Stretch" IsItemsHost="true" Rows="1"  Panel.ZIndex="1"  />

                            <Border x:Name="ContentPanel"

                                    Background="{TemplateBinding Background}"

                                    BorderBrush="{TemplateBinding BorderBrush}"

                                    Grid.Column="0"

                                    Grid.Row="1"

                                    KeyboardNavigation.DirectionalNavigation="Contained"

                                    KeyboardNavigation.TabNavigation="Local"

                                    KeyboardNavigation.TabIndex="2">

                                <ContentPresenter x:Name="PART_SelectedContentHost" ContentSource="SelectedContent"

                                                  Margin="{TemplateBinding Padding}"

                                                  SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>

                            </Border>

                        </Grid>

                    </Border>

                    <ControlTemplate.Triggers>

                        <Trigger Property="TabStripPlacement" Value="Bottom">

                            <Setter Property="Grid.Row" TargetName="HeaderPanel" Value="1"/>

                            <Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>

                            <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>

                            <Setter Property="Height" TargetName="RowDefinition1" Value="Auto"/>

                        </Trigger>

                        <Trigger Property="TabStripPlacement" Value="Left">

                            <Setter Property="Columns" TargetName="HeaderPanel" Value="1"/>

                            <Setter Property="Rows" TargetName="HeaderPanel" Value="0"/>

                            <Setter Property="Grid.Row" TargetName="HeaderPanel" Value="0"/>

                            <Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>

                            <Setter Property="Grid.Column" TargetName="HeaderPanel" Value="0"/>

                            <Setter Property="Grid.Column" TargetName="ContentPanel" Value="1"/>

                            <Setter Property="Width" TargetName="ColumnDefinition0" Value="Auto"/>

                            <Setter Property="Width" TargetName="ColumnDefinition1" Value="*"/>

                            <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>

                            <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>

                        </Trigger>

                        <Trigger Property="TabStripPlacement" Value="Right">

                            <Setter Property="Columns" TargetName="HeaderPanel" Value="1"/>

                            <Setter Property="Rows" TargetName="HeaderPanel" Value="0"/>

                            <Setter Property="Grid.Row" TargetName="HeaderPanel" Value="0"/>

                            <Setter Property="Grid.Row" TargetName="ContentPanel" Value="0"/>

                            <Setter Property="Grid.Column" TargetName="HeaderPanel" Value="1"/>

                            <Setter Property="Grid.Column" TargetName="ContentPanel" Value="0"/>

                            <Setter Property="Width" TargetName="ColumnDefinition0" Value="*"/>

                            <Setter Property="Width" TargetName="ColumnDefinition1" Value="Auto"/>

                            <Setter Property="Height" TargetName="RowDefinition0" Value="*"/>

                            <Setter Property="Height" TargetName="RowDefinition1" Value="0"/>

                        </Trigger>

                    </ControlTemplate.Triggers>

                </ControlTemplate>

            </Setter.Value>

        </Setter>

    </Style>

三、源码地址

gitee地址：https://gitee.com/sirius_machao/Cys_Controls/tree/dev/

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