Currently it appears to be blank.
My method is below
private void InvokeButton(string buttonname)// needs Automation peer element
{
chartWindow = Window.GetWindow(this.ChartControl.Parent) as Chart;
Button btn = chartWindow.FindFirst(buttonname) as Button;
ButtonAutomationPeer btnPeer = new ButtonAutomationPeer(btn);
IInvokeProvider btnInvokeP = btnPeer.GetPattern(PatternInterface.Invoke) as System.Windows.Automation.Provider.IInvokeProvider ;
if(btnInvokeP != null) btnInvokeP.Invoke();
}

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