WPF绑定到自己 [英] WPF Bind to itself

问题描述

我有一个WPF 窗口和某处有一个的ListView ，我绑定一个列表＆LT;字符串方式＆gt; 到

I've got a WPF Window, and somewhere there is a ListView where I bind a List<string> to.

现在在我的的ListView某处有一个文本框和内容属性设置为 {结合} 。

Now somewhere in my ListView there is a TextBox and the Content property is set to {Binding}.

但是，这是简写。我怎样写完整绑定绑定到自己？

But this is the shorthand. How do I write the full binding to bind to itself?

{绑定路径=自} 不工作，也不做 {结合自} （后者是前者的快捷方式）。

{Binding Path=Self} doesn't work, neither does {Binding Self} (where the latter is a shortcut for the former).

推荐答案

简短的回答： {结合} 是的不为结合自身快捷方式（在意义上的<一个href=\"http://msdn.microsoft.com/en-us/library/system.windows.data.relativesource.self.aspx\">RelativeSource.Self).相反， {结合} 的相当于 {结合路径=} ，其结合到电流源

Short answer:{Binding} is not a shortcut for "binding to itself" (in the sense of RelativeSource.Self). Rather, {Binding} is equivalent to {Binding Path=.}, which binds to the current source.

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要详细说明：一个绑定拥有的源的和的路径的。你可以做一个结合至自身，例如，通过使用

To elaborate: A binding has a source and a path. You can do a "binding to itself", for example, by using

<myUIControl myProperty="{Binding RelativeSource={RelativeSource Self}, Path=x}" />

然而，设置的源应用于控件本身，所以它会尝试访问属性 X上的UI控件的（而不是财产 X 当前数据上下文中）。从我了解如何你的问题，这是不是你想要的;特别是，它不是什么 {结合} 做： {结合} 保留，因为它是源（通常是的DataContext 一些父元素），并结合源本身（等同于路径= ）。

This, however, sets the source to the control itself, so it will try to access property x of the UI control (rather than property x of the current data context). From how I understood your question, this is not what you want; in particular, it is not what {Binding} does: {Binding} keeps the source as it is (usually the DataContext of some parent element) and binds to the source itself (equivalent to Path=.).

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