使用SelectionMode = Multiple数据绑定ListBox [英] Databinding a ListBox with SelectionMode = Multiple

问题描述

我有一个WPF ListBox ，我想要

• 启用多个在 ListBox 中选择，


• 将ListBox的数据绑定到我的视图模型。

这两个要求似乎不兼容。我的视图模型有一个 ObservableCollection< T> 属性绑定到此ListBox;我在XAML中设置了一个从属性到 ListBox.SelectedItems 属性的绑定。当我编译时，我收到一条错误，指出 SelectedItems 属性是只读的，无法从XAML设置。

<我是否绑定到错误的控制属性？有没有办法将XAML中的多选ListBox绑定到视图模型集合属性？感谢您的帮助。

解决方案

我最终在SelectionChanged事件处理程序中使用一些代码隐藏来设置视图模型属性。比创建对象包装更简单。

I have a WPF ListBox that I would like to

• Enable multiple selection in the ListBox, and
• Databind the ListBox to my view model.

These two requirements appear to be incompatible. My view model has an ObservableCollection<T> property to bind to this ListBox; I set up a binding in XAML from the property to the ListBox.SelectedItems property. When I compiled, I got an error saying that the SelectedItems property was read only and could not be set from XAML.

Am I binding to the wrong control property? Is there a way to bind a multiple-selection ListBox in XAML to a view model collection property? Thanks for your help.

解决方案

I ended up using a bit of code-behind in a SelectionChanged event handler to set the view model property. Simpler than creating object wrappers.

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