How to get the “PreferredWidth” of label control using the UIAutomation(Automationelement)?

Note: ControlType.Text has no supported patterns

I have tried with following steps to get "PreferredWidth" and it is not supporting

Step1:- 

        private GetLabelPreferredWidth()
        {
            AutomationElement objElement = objMainWindow.AutomationElement;           
            PropertyC
ondition cond = new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Text);
            AutomationElement textProvider = objElement.FindFirst(TreeScope.Descendants, cond);

        }

        Note:
        I need to get the “PreferredWidth” from the “textProvider”. But it is not available