public FormHomepage() { InitializeComponent(); formAbout = new FormAbout { Visible = false }; formCalculator = new FormCalculator { Visible = false }; }
private void ButtonCalculatorForm_Click(object sender, EventArgs e) { if (formCalculator.Visible == true) { formCalculator.Visible = false; } else { if (formCalculator.IsDisposed) { formCalculator = new FormCalculator(); } formCalculator.Visible = true; } }