/// <summary>
/// Called when the value of the <see cref="P:System.Windows.Controls.ContentControl.Content"/> property changes.
/// </summary>
/// <param name="oldContent">The old value of the <see cref="P:System.Windows.Controls.ContentControl.Content"/> property.</param>
/// <param name="newContent">The new value of the <see cref="P:System.Windows.Controls.ContentControl.Content"/> property.</param>
protected override void OnContentChanged(object oldContent, object newContent)
{
base.OnContentChanged(oldContent, newContent);
RadComboBox combo = this.ParentComboBox;
if (this.IsSelected && combo != null)
{
combo.SelectedItemUpdated();
}
}