如何:更改边框属性

更新:2007 年 11 月

此示例演示如何更改 Border 元素的 Background 颜色。

示例

下面的示例将 Button 元素放在 Canvas 的中心附近。Canvas 嵌套在 Border 元素中以显示元素周围的边框。单击 Button 元素时,Border 元素的 Brush 颜色会更改为 LightSteelBlue。单击事件还会将 TextBlock 中的文本字符串添加到 Canvas(表明事件已发生)并更新 Button 元素的文本内容。

<Window
  xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="Border_change_programmatic.Window1"
  Title="Change Border Programmatically">
  <Border Name="root"
          BorderThickness="2"
            BorderBrush="Black"
            Background="LightGray"
            Width="350"
            Height="350">
    <Canvas>
      <Button Name="btn" Canvas.Top="40" Canvas.Left="40" Background="LightSkyBlue" Height="35" Click="ChangeBG">Click Me to change the Background Color</Button>
      <TextBlock Canvas.Top="130" Canvas.Left="40" Name="Text1">Waiting for Click!</TextBlock>
    </Canvas>
  </Border>
</Window>

以下代码隐藏文件将处理 ChangeBG 方法。

Private Sub ChangeBG(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs)
    root.Background = System.Windows.Media.Brushes.LightSteelBlue
    btn.Content = "Clicked!"
    Text1.Text = "The background is now LightSteelBlue"
End Sub
     void ChangeBG(object sender, System.Windows.RoutedEventArgs e)   
            {
            root.Background = System.Windows.Media.Brushes.LightSteelBlue;
            btn.Content = "Clicked!";
            Text1.Text = "The background is now LightSteelBlue"; 
            }

请参见

概念

面板概述

参考

Border