C# WPF - 窗口中的黑线

Question

在我的窗口中有一条小黑线。为什么？

<Window x:Class="WpfPortOfTestingCamera.InputSelection"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="InputSelection" WindowStartupLocation="CenterOwner" ResizeMode="NoResize" ShowInTaskbar="False" mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" SizeToContent="WidthAndHeight" d:DesignWidth="280" d:DesignHeight="206">

        <StackPanel HorizontalAlignment="Center" Name="stackPanel1" VerticalAlignment="Top" Margin="10" MaxWidth="500">
            <GroupBox Header="Select Camera" HorizontalAlignment="Center" VerticalAlignment="Center">
                <ComboBox Height="23" Name="comboBox1" HorizontalAlignment="Center" VerticalAlignment="Center" MinWidth="120" />
            </GroupBox>
            <Button Content="OK" Name="ButtonOK" IsDefault="True" Click="ButtonOK_Click" />
        </StackPanel>
</Window>

Answer 1

这似乎是在设置内容字符串后将窗口调整为组合框的宽度时出现的渲染伪像。

如果您将属性 SnapsToDevicePixels="True"添加到 Window-tag，黑线就会消失。