private void OrderSellBtn_Click(object sender, EventArgs e) { try { var instr = GetSelectedInstrument(); var price = InputForm.GetPrice("Sell order Price", instr.BuyOffers.BestPrice); if (price == null) { return; } var quantity = InputForm.GetInt("Sell order Quantity", 1); if (quantity == null) { return; } if (price != null) { instr.Sell(price, (uint)quantity); } } catch (Exception ex) { ex.PrintError(); } }