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for example in database i have country and city of that country and I want create a expander or anything like expander that can help me for group content that is like expander (hide and show data) that have country name and in expander I want add every city in that country. how to do that?

What I have tried:

Since I don't know how to do it i don't tried anything. I search about it and can't find anything that can help me.
Updated 25-Oct-22 10:56am
[no name] 25-Oct-22 15:22pm    
User controls (UC): one for each country; and a ListView of cities within an Expander (in the UC). Or you simulate it; loading the ListView when the Expander is "expanded".

1 solution

I think that this is what you are looking for: ListView grouping - The complete WPF tutorial[^]. The tutorial shows you how to use groups with a ListView control and how to make the group expand and collapse.
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