public MainWindow()
{
InitializeComponent();
Formulae.AppendText("AVERAGE\n");
Formulae.AppendText("STDEVPA\n");
Formulae.AppendText("MIN\n");
Formulae.AppendText("MAX\n");
userInput = new UserInput();
SelectWorksheet.IsEnabled = false;
SelectRange.IsEnabled = false;
WindowHelper.Setup(this, LogBox, Run, Cancel);
Flow.Init();
}