Build a Trading Platform in C# Part 3 - Send Orders

Build a Trading Platform in csharp Part 3 send order. I added three buttons one for disconnecting from the server, a sell button and a buy button. Added a checkbox for trading premarket and after hours. Click events for the textboxes of bid ask and last, also a timer and a text box to hold the next valid id.

 

 

#	Control	Name	Text or Value
1	Textbox	tbValid_Id	0
2	Button	btnDisconnect	Disconnect
3	Button	btnSell	SELL
4	Button	btnBuy	BUY
5	Checkbox	chkOutside	OutsideRTH
6	Timer	Timer1	100

add the highlighted code to the Form1.cs file in the appropriate location

	// This delegate enables asynchronous calls for setting
        // the text property on a ListBox control.
        delegate void SetTextCallback(string text);
        delegate void SetTextCallbackTickPrice(string _tickPrice);

        int order_id = 0;
        int timer1_counter = 5;

	// Set up the form object in the EWrapper
        ibClient.myform = (Form1)Application.OpenForms[0];


	// gets the next order id and puts it in the textbox 
        tbValid_Id.Text = ibClient.NextOrderId.ToString();
        // updates the order_id value
        order_id = ibClient.NextOrderId;

	public void btnDisconnect_Click(object sender, EventArgs e)
        {
            ibClient.ClientSocket.eDisconnect();
        }

	public void send_order(string side)
        {
            // Create a new contract to specify the security we are searching for
            IBApi.Contract contract = new IBApi.Contract();
            
            // Set the underlying stock symbol from the cbSymbol combobox
            contract.Symbol = cbSymbol.Text;
            // Set the Security type to STK for a Stock
            contract.SecType = "STK";
            // Use "SMART" as the general exchange
            contract.Exchange = cbMarket.Text;
            // Set the primary exchange (sometimes called Listing exchange)
            // Use either NYSE or ISLAND
            contract.PrimaryExch = "ISLAND";
            // Set the currency to USD
            contract.Currency = "USD";

            IBApi.Order order = new IBApi.Order();
            // gets the next order id from the text box
            order.OrderId = order_id;
            // gets the side of the order (BUY, or SELL)
            order.Action = side;
            // gets order type from combobox market or limit order(MKT, or LMT)
            order.OrderType = cbOrderType.Text;
            // number of shares from Quantity
            order.TotalQuantity = Convert.ToDouble(numQuantity.Value);
            // Value from limit price
            order.LmtPrice = Convert.ToDouble(numPrice.Value);
            // checks for a stop order
            if (cbOrderType.Text == "STP")
            {
                // Stop order value from the limit textbox
                order.AuxPrice = Convert.ToDouble(numPrice.Value);
            }
            //Visible shares to the market
            order.DisplaySize = Convert.ToInt32(tbVisible.Text);
            //order.OutsideRth = cbOutsideRTH.Checked;
            order.OutsideRth = chkOutside.Checked;

            // Place the order
            ibClient.ClientSocket.placeOrder(order_id, contract, order);

            // increase the order id value
            order_id++;
            tbValid_Id.Text = Convert.ToString(order_id);
        }

	private void tbAsk_Click(object sender, EventArgs e)
        {
            numPrice.Value = Convert.ToDecimal(tbAsk.Text);
        }

        private void tbBid_Click(object sender, EventArgs e)
        {
            numPrice.Value = Convert.ToDecimal(tbBid.Text);
        }

        private void tbLast_Click(object sender, EventArgs e)
        {
            numPrice.Value = Convert.ToDecimal(tbLast.Text);
        }

Add the highlighted code to the bottom of the getData() function it is used to start the timer.

	    ibClient.ClientSocket.reqMktData(1, contract, "", false, false, mktDataOptions);
            
            timer1.Start();

	private void timer1_Tick(object sender, EventArgs e)
        {
            if (timer1_counter == 0)
            {
                timer1.Stop(); // stop the timer
                //add the bid price to the limit box
                numPrice.Value = Convert.ToDecimal(tbBid.Text);
                timer1_counter = 5;// resets timer counter back to 5
            }
            timer1_counter--; // subtract 1 every time their is a tick
        }