c# - Borderbrush 到 ComboBox

Question

我需要一些帮助。

我有两个控件，一个 ComboBox 和一个 TextBox，我需要将 BorderBrush 属性更改为其他颜色，使用 de TextBox 效果很好，但使用 ComboBox 则不行。这是我的代码。

<ComboBox x:Name="cmbCombo" HorizontalAlignment="Left" Margin="155,98,0,0" VerticalAlignment="Top" Width="120" />                   
<TextBox x:Name="txtCaja" HorizontalAlignment="Left" Height="23" Margin="158,56,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>
<Button Content="Button" HorizontalAlignment="Left" Margin="174,155,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click_1"/>


cmbCombo.BorderThickness = new Thickness(3);
cmbCombo.BorderBrush = Brushes.OrangeRed;
txtCaja.BorderThickness = new Thickness(3);
txtCaja.BorderBrush = Brushes.OrangeRed;

谢谢大家。

Answer 1

尝试将 cmbCombo ComboBox 包裹在 Border 中:

<Border x:Name="comboBorder" HorizontalAlignment="Left"
          Margin="155,98,0,0" VerticalAlignment="Top">
   <ComboBox x:Name="cmbCombo" Width="120" />
</Border>

然后在你的代码隐藏中:

comboBorder.BorderThickness = new Thickness(3);
comboBorder.BorderBrush = Brushes.OrangeRed;