System.Windows.Automation.AutomationElement.GetCurrentPattern C# (CSharp) Method

        public object GetCurrentPattern(AutomationPattern pattern)
        {
            object patternObj;
            if (!this.TryGetCurrentPattern(pattern, out patternObj))
            {
                throw new InvalidOperationException("Unsupported pattern");
            }
            return patternObj;
        }

 public void executePattern(AutomationElement subject, AutomationPattern inPattern)
 {
     switch (inPattern.ProgrammaticName)
     {
         case "InvokePatternIdentifiers.Pattern":
             {
                 InvokePattern invoke = (InvokePattern)subject.GetCurrentPattern(InvokePattern.Pattern);
                 invoke.Invoke();
                 break;
             }
         case "SelectionItemPatternIdentifiers.Pattern":
             {
                 SelectionItemPattern select = (SelectionItemPattern)subject.GetCurrentPattern(SelectionItemPattern.Pattern);
                 select.Select();
                 break;
             }
         case "TogglePatternIdentifiers.Pattern":
             {
                 TogglePattern toggle = (TogglePattern)subject.GetCurrentPattern(TogglePattern.Pattern);
                 toggle.Toggle();
                 break;
             }
         case "ExpandCollapsePatternIdentifiers.Pattern":
             {
                 ExpandCollapsePattern exColPat = (ExpandCollapsePattern)subject.GetCurrentPattern(ExpandCollapsePattern.Pattern);
                 // exColPat.Expand();
                 break;
             }
     }
 }