为什么wpf里面的Textbox边框会这样

[u010147020]

好像是边框颜色深浅不一样?

<Window x:Name="CoreFramework" x:Class="CoreFramework.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="" Height="354" Width="525" Activated="CoreFramework_Activated" Closed="CoreFramework_Closed" SizeChanged="CoreFramework_SizeChanged" Loaded="CoreFramework_Loaded" Background="#FFFFFCFD">
    <Grid>
        <Grid x:Name="FCE">
            <Menu x:Name="Menus" Background="#FFFFFCFD" Margin="0,0,0,290" />
            <TextBox x:Name="miao"  Height="259" Margin="164,18,10,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" IsReadOnly="True" BorderThickness="1" Background="Transparent"/>
            <TextBox x:Name="command" Height="22" Margin="164,288,10,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" KeyDown="command_KeyDown" KeyUp="command_KeyUp" PreviewKeyDown="command_PreviewKeyDown" BorderThickness="1"/>
            <ListBox x:Name="PlayerList" HorizontalAlignment="Left" Height="166" Margin="12,143,0,0" VerticalAlignment="Top" Width="139"/>
            <Label x:Name="Status"  Content="Label" HorizontalAlignment="Left" Margin="10,18,0,0" VerticalAlignment="Top" Height="125" Width="141"/>
        </Grid>
    </Grid>
</Window>

[Forty2]

因为那就是TextBox边框的默认式样（有点3D层次的效果）。 如果你不喜欢可以用自定义的BorderBrush： <TextBox BorderBrush="Gray" ...

[exception92]

设置它的BorderBrush 与BorderThickness 属性。