WPF TreeView selectedItem数据绑定 [英] Wpf treeview selectedItem databinding

问题描述

我有一个视图，其中有一个绑定到树视图的对象。该对象具有多个（不同类型的）集合，所以我使用带有CompositeCollection的分层模板在树状视图中显示它们。

I have a view where I've got an object bound to a treeview. The object has a number of collections (of different types) so I'm using hiearchical templates with a CompositeCollection to display them in the treeview.

然后，我得到了一个绑定到树视图的selectedItem的文本框。在这里，我将selectedItem序列化为XML，并将其显示在文本框中进行编辑。

I've then got a textbox that is bound to the treeview's selectedItem. Here I'm serialising the selectedItem to XML and displaying it in the textbox for editing.

到目前为止，一切都很好。但是，我遇到的最大问题是，我无法对树视图的SelectedItem属性使用2向数据绑定，因为它是只读的。

All good so far. However, the big problem I have is that I can't use 2-way databinding with the SelectedItem property of the treeview as it is read only.

我怎样才能干净保持文本框编辑与绑定到树视图的对象同步？

How can I cleanly keep the textbox edits in sync with my object that is bound to the treeview?

推荐答案

我认为您不需要做两个-在SelectedItem本身上进行双向数据绑定时，应在绑定对象的类中公开一个属性，该属性返回序列化的字符串，并在 set 进行适当修改后。这比处理整个对象要容易。

I do not think you need to do two-way databinding on the SelectedItem itself, you should expose a property in the class of your bound object which returns the serialized string and upon set modifies the object appropriately. This should be easier than dealing with the object as a whole.

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