private void BtnCheckoutSales_Click(object sender, EventArgs e) { if (AuctionSaleForm != null) { AuctionSaleForm.Focus(); } else { AuctionSaleForm = new FrmGetPersonForAuctionSales(); AuctionSaleForm.Closed += AuctionSaleForm_Closed; AuctionSaleForm.Show(); } }
void AuctionSaleForm_Closed(object sender, EventArgs e) { AuctionSaleForm = null; }