TabControl不会拉伸

Question

我无法在选项卡控件内获取选项卡控件以填充其容器。我认为这是我忽略或尚未发现的一些简单属性。在下面的 xaml 中，我希望 TabControl 'sub' 完全填充画布 'canvas2'。

谢谢你， 文卡特

<Border BorderBrush="AliceBlue" BorderThickness="1,1,1,1">
    <TabControl name="Main">
        <TabItem Header="Test1">
            <DockPanel LastChildFill="True">
                <Border BorderBrush="Green" BorderThickness="1,1,1,1">
                    <Canvas Width="350" Height="200" DockPanel.Dock="Left">

                    </Canvas>
                </Border>
                <Border BorderBrush="Red" BorderThickness="1,1,1,1">
                    <Canvas name="canvas2">
                        <Border BorderBrush="Yellow" BorderThickness="1,1,1,1">                                
                                <TabControl Height="600" HorizontalAlignment="Stretch"  name="sub">
                                    <TabItem Header="Rights Test 1" HorizontalAlignment="Stretch">
                                        <Canvas></Canvas>
                                    </TabItem>
                                    <TabItem Header="Rights Test 2">
                                        <Canvas></Canvas>
                                    </TabItem>
                                </TabControl>                                
                        </Border>
                    </Canvas>
                </Border>
            </DockPanel>
        </TabItem>
    </TabControl>
</Border>

<代码>

Answer 1

画布不会拉伸以填充其给定的空间。所以摆脱canvas2。