public override void DoExecute()
        {
            switch (PlaybackObject.action)
            {
            case "SetText":
                try
                {
                    if (UiElement.AsComboBox().IsEditable.Equals(true))
                    {
                        UiElement.AsTextBox().Enter(PlaybackObject.text);
                        Result = true;
                    }
                    else
                    {
                        Result = false;
                    }
                }
                catch (Exception)
                {
                    Result = false;
                }
                break;

            case "Select":
                try
                {
                    //AutomationElement a = UiElement.AutomationElement;
                    //ExpandCollapsePattern expandCollapsePattern = a.GetCurrentPattern(ExpandCollapsePattern.Pattern) as ExpandCollapsePattern;
                    //expandCollapsePattern.Expand();
                    //var cbxEditItems = UiElement.FindAll(TreeScope.Subtree, new System.Windows.Automation.PropertyCondition(AutomationElement.ClassNameProperty, "ComboBoxItem"));
                    //cbxEditItems[PlaybackObject.itemIndex].AutomationElement.SelectionItemPattern().Select();
                    //expandCollapsePattern.Collapse();
                    UiElement.AsComboBox().Select(PlaybackObject.itemIndex);
                    UiElement.AsComboBox().Collapse();
                    Result = true;
                }
                catch (Exception)
                {
                    Result = false;
                }
                break;

            default:
                Result = false;
                break;
            }
        }