Virgo_ST/VirgoRT/Backends/IOMonitorView.xaml

<UserControl x:Class="VirgoRT.Backends.IOView"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:VirgoRT.Backends"
             xmlns:control="clr-namespace:MECF.Framework.UI.Core.Control;assembly=MECF.Framework.UI.Core"
             mc:Ignorable="d" 
             d:DesignHeight="700" d:DesignWidth="1000" Background="SkyBlue">
    <UserControl.Resources>
        <Style x:Key="tabNull" TargetType="TabControl"></Style>
    </UserControl.Resources>
    <TabControl >
        <TabControl.Resources>
            <Style TargetType="{x:Type TabItem}">
                <Setter Property="BorderThickness" Value="0"/>
                <Setter Property="Padding" Value="0" />
                <Setter Property="Margin" Value="5,0,5,0" />

                <Setter Property="HeaderTemplate">
                    <Setter.Value>
                        <DataTemplate>
                            <Border x:Name="grid"  CornerRadius="5,5,0,0" Background="Silver" Width="120" >
                                <ContentPresenter Content="{TemplateBinding Content}" Margin="15,5,15,5" HorizontalAlignment="Center">
                                    <ContentPresenter.LayoutTransform>
                                        <RotateTransform Angle="0"/>
                                    </ContentPresenter.LayoutTransform>
                                </ContentPresenter>
                            </Border>
                            <DataTemplate.Triggers>
                                <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TabItem}},Path=IsSelected}" Value="True">
                                    <Setter TargetName="grid" Property="Background">
                                        <Setter.Value>
                                            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                                <GradientStop Color="#d0e5f7" Offset="0"/>
                                                <GradientStop Color="#48b0e2" Offset="1"/>
                                            </LinearGradientBrush>
                                        </Setter.Value>
                                    </Setter>
                                </DataTrigger>
                            </DataTemplate.Triggers>
                        </DataTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </TabControl.Resources>


        <TabItem Header="PLC1">
            <control:DiItemEditor DataContext="{Binding IoList[0]}" ></control:DiItemEditor>
        </TabItem>
        <TabItem Header="PLC2">
            <control:DiItemEditor DataContext="{Binding IoList[1]}" ></control:DiItemEditor>
        </TabItem>
 
 
    </TabControl>
 
</UserControl>