How can I use multiple combo boxes with one datasource in WPF?

Question

When I try to use the same list with multiple combo boxes, the selection is shared with all the combo boxes.

I want the combo box to treat the datasource as their own and selection should not be shared.

<ComboBox ItemsSource="{Binding ActiveLanguages}" DisplayMemberPath="Name" />

ActiveLanguages is a ObservableCollection and is a single instance object for the application.

This Combo Box is on a template, and the selection repeats itself on all the instance of the templates.

Answer 1

将IsSynchronizedWithCurrentItem属性设置为false

Answer 2

making a copy can eat a lot of memory depending on the size of the list.

A much better way is to use a BindingSource.

each UI object sets its datasource to a new copy of a BindingSource.

The BindingSources all set their .datasource = the same instance of whatever list you are trying to bind to.