Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
615 views
in Technique[技术] by (71.8m points)

c# - Do not allow unselect/deselect in ListBox

Is there a way to configure the WPF ListBox such that it's not possible to deselect/unselect an item? So there is always an item selected?

My ListBox binds to an ObservableCollection<MyClass>.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

You can handle the SelectionChanged event and set a selection if the SelectedItem evaluates to null. To reselect an item that has been unselected you can keep track of the last selected item in a private field, which should always be updated in the SelectionChanged event.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...