private void CloseSale() { SaleController saleController = new SaleController(); saleController.Close(); NewSaleToolStripMenuItem.Enabled = true; NewOrderToolStripMenuItem.Enabled = false; ViewTotalsToolStripMenuItem.Enabled = false; ToolStripTotals.Enabled = false; CloseCurrentSaleToolStripMenuItem.Enabled = false; toolStripOrderButton.Enabled = false; toolStripStartingCash.Enabled = false; initialSaleContributionsToolStripMenuItem.Enabled = false; StatusStrip1.Items[0].Text = "No sale currently open. To start a new sale, click New Sale under File menu."; foreach (Form frm in this.MdiChildren) { frm.Close(); } }