Check out example codes for "get datacontext of itemscontrol item c#". It will help you in understanding the concepts better.

Code Example 1

//assuming your itemssontrol items each have a click event:
private void Button_Click(object sender, RoutedEventArgs e) 
{ 
    var vm = (sender as FrameworkElement).DataContext; 
	//can cast to specific class type from here

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