private bool ExpandListIfNeeded(out ExpandCollapsePattern expandCollapsePattern) { if (!IsExpansionRequired || !Enabled) { expandCollapsePattern = null; return false; } if (!TryGetExpandCollapsePattern(out expandCollapsePattern)) return false; var expansionState = expandCollapsePattern.Current.ExpandCollapseState; if (expansionState != ExpandCollapseState.Collapsed) return false; expandCollapsePattern.Expand(); Thread.Sleep(50); return true; }