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copied!<p>Normally, in MVVM, if you bound the <strong>Command</strong>, you could pass a <strong>CommandParameter</strong> and in it put the <strong>DataContext</strong>, but the MOST <strong>important</strong> thing to do is to pass the "<strong>DataContext</strong>". since this is tied to a Click event, typecast the sender as a button, acess the DataContext and this should be the object in the listbox. So if your listbox is bound to an <strong>ItemsSource</strong> of "Customers", your "<strong>DataContext</strong>" on the button should be a "Customer" object. It should be passed down since the StackPanel's DataContext will be that object, and all it's children should have the same. E.g.:</p> <pre><code>public void btnClearBodyMark_Click(object sender, ButtonClickEventArgs e) { var myRef = (sender as Button).DataContext; } </code></pre> <p>Something like that.<br> P.S. since this is most likely bound to a set of "objects". The item is no longer a ListBoxItem per say, but rather a datatype of the bound collection.<br> Also, you can save yourself the work of "SelectionChanged" event if you bound the <strong>SelectedItem</strong> property of the ListBox to a property in your ViewModel, with a mode of <strong>Mode=TwoWay</strong>. Make sure that your property, for example "SelectedListItem" in the ViewModel notifies the property changed event by ensuring that your ViewModel implements INotifyPropertyChanged which is found in System.ComponentModel i think. That way, once the user selects something, there's no need for an even handler ;).</p>

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