在 WPF 中如何从代码中获取特定项目的绑定? [英] In WPF how to get binding of a specific item from the code?

问题描述

这个例子是:

文本框绑定到一些数据.第二个文本框没有绑定到任何东西.所以我想将文本框 2 绑定到第一个文本框绑定的相同数据.

A textBox is bound to some data. There is a second text box which is not bind to anything. So I want to bind text box 2 to the same data 1st textBox is bound.

换句话说，我不想知道 DependencyObject 是否存储了一些对其数据绑定的引用?如果没有，有什么方法可以找出特定对象的所有数据绑定?

In other words I wan't to know if the DependencyObject stores some reference to it's data-bindings? If not, what is the way to find out all data-bindings of a specific object?

推荐答案

试试这个

XML

<TextBox Name="textBox1" Text="{Binding Text1}"/>
<TextBox Name="textBox2" Text="No Binding"/>

然后我们可以将textBox2的TextProperty的绑定设置为和textBox1一样，后面有这段代码

Then we can set the binding of the TextProperty for textBox2 to the same as textBox1 with this code behind

BindingExpression bindingExpression = textBox1.GetBindingExpression(TextBox.TextProperty);
Binding parentBinding = bindingExpression.ParentBinding;
textBox2.SetBinding(TextBox.TextProperty, parentBinding);

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