当我们想未一个控件绑定值的时候,我们需要将某个控件的数据绑定到指定的控件上,就可以用RelativeSource。
XAML代码
<Window x:Class="使用Binding的RelativeSource.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid x:Name="第一层" Background="LightBlue" Margin="5">
<DockPanel Name="第二层" Background="Yellow" Margin="10">
<Grid x:Name="第三层" Background="Green" Margin="20">
<!--方案一,用cs-->
<!--<TextBox x:Name="zuihou" FontSize="20" Margin="10"/>-->
<!--方案二-->
<TextBox Text="{Binding RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type Grid},AncestorLevel=1},Path=Name}"/>
</Grid>
</DockPanel>
</Grid>
</Window>
CS代码
namespace 使用Binding的RelativeSource
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
//这是第一种方法
//RelativeSource rs = new RelativeSource(RelativeSourceMode.FindAncestor);
////AncestorLevel是指以Binding目标控件为起点的目标偏移量
//rs.AncestorLevel = 1;
////AncestorType是说Bingding目标的类型
//rs.AncestorType = typeof(Grid);
//Binding binding = new Binding("Name") { RelativeSource=rs};
//this.zuihou.SetBinding(TextBox.TextProperty, binding);
}
}
}