RadListBox doesn't provide a built-in clipboard support. To achieve your requirement, you can subscribe to the KeyDown event of the listbox and implement a custom copy/paste logic that saves and loads data from the clipboard.
private void RadListBox_KeyDown(object sender, KeyEventArgs e)
var selectedItems = this.listBox.SelectedItems;
if (Keyboard.Modifiers == ModifierKeys.Control && e.Key == Key.C)
else if (Keyboard.Modifiers == ModifierKeys.Control && e.Key == Key.V)
I hope this helps.
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