PLEASE HELP Crashed in OnTick with NullReferenceException

hermoso
11 Feb 2014, 01:15

RE:

The error is in this two lines

        //Local declaration
            TriState _Close_BUY_Positions = new TriState();
            TriState _Close_SELL_Positions = new TriState();

You try to instance a object from a class TriState but there is no reference to it! You must use "add reference"  and look for the dll file that contains the TriState Class and then declare it.

using TriState or whatever the classname is!"

ninosgr said:

Can anyway help me with this code please? I built it with Quant as I am not a programmer, thus I cannot find the solution.

 

Thanks in advance!!!

 

10/02/2014 17:58:14.864 | Crashed in OnTick with NullReferenceException: Object reference not set to an instance of an object.

 

 

//+------------------------------------------------------------------+
//+                     Code generated using StrategyTune ver. 1.1.8 |
//+------------------------------------------------------------------+

using System;
using System.Threading;
using cAlgo.API;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;
using cAlgo.API.Requests;
using cAlgo.Indicators;

namespace cAlgo.Robots
{
    [Robot()]
    public class Prototype : Robot
    {

        [Parameter("StopLoss", DefaultValue = 0)]
        public double _StopLoss { get; set; }
        [Parameter("Take_Profit", DefaultValue = 0)]
        public double _Take_Profit { get; set; }
        [Parameter("OpenPositions", DefaultValue = 1)]
        public double _OpenPositions { get; set; }

        //Global declaration
        private MacdHistogram i_MACD;
        private MacdHistogram i_MACD_2;
        double? _Arithmetic_2;
        bool _Compare_4;
        bool _Sell;
        bool _Buy;

        DateTime LastTradeExecution = new DateTime(0);

        protected override void OnStart()
        {
            i_MACD = Indicators.MacdHistogram(MarketSeries.Median, 34, 5, 9);
            i_MACD_2 = Indicators.MacdHistogram(MarketSeries.Median, 34, 5, 9);

        }

        protected override void OnTick()
        {
            if (Trade.IsExecuting)
                return;

            //Local declaration
            TriState _Close_BUY_Positions = new TriState();
            TriState _Close_SELL_Positions = new TriState();

            //Step 1
            _Arithmetic_2 = (_OpenPositions - (1));

            //Step 2

            //Step 3
            _Compare_4 = ((i_MACD.Histogram.Last(0) - (i_MACD_2.Histogram.Last(1))) > 0);

            //Step 4
            if (_Compare_4)
                _Close_BUY_Positions = _ClosePosition(2, Symbol.Code, 0.1);
            if (!_Compare_4)
                _Close_SELL_Positions = _ClosePosition(1, Symbol.Code, 0.1);

            //Step 5
            if (!(!(Number_of_Open_Trades(1) == _Arithmetic_2) && _Compare_4))
                _Sell = Sell(1, 0.1, 1, _StopLoss, 1, _Take_Profit, 5, 1, 0, "");
            if (!(!(Number_of_Open_Trades(2) == _Arithmetic_2) && !_Compare_4))
                _Buy = Buy(2, 0.1, 1, _StopLoss, 1, _Take_Profit, 5, 1, 0, "");

        }

        bool NoOrders(string symbolCode, double[] magicIndecies)
        {
            if (symbolCode == "")
                symbolCode = Symbol.Code;
            string[] labels = new string[magicIndecies.Length];
            for (int i = 0; i < magicIndecies.Length; i++)
            {
                labels[i] = "FxProQuant_" + magicIndecies[i].ToString("F0");
            }
            foreach (Position pos in Positions)
            {
                if (pos.SymbolCode != symbolCode)
                    continue;
                if (labels.Length == 0)
                    return false;
                foreach (var label in labels)
                {
                    if (pos.Label == label)
                        return false;
                }
            }
            foreach (PendingOrder po in PendingOrders)
            {
                if (po.SymbolCode != symbolCode)
                    continue;
                if (labels.Length == 0)
                    return false;
                foreach (var label in labels)
                {
                    if (po.Label == label)
                        return false;
                }
            }
            return true;
        }

        TriState _OpenPosition(double magicIndex, bool noOrders, string symbolCode, TradeType tradeType, double lots, double slippage, double? stopLoss, double? takeProfit, string comment)
        {
            Symbol symbol = (Symbol.Code == symbolCode) ? Symbol : MarketData.GetSymbol(symbolCode);
            if (noOrders && Positions.Find("FxProQuant_" + magicIndex.ToString("F0"), symbol) != null)
                return new TriState();
            if (stopLoss < 1)
                stopLoss = null;
            if (takeProfit < 1)
                takeProfit = null;
            if (symbol.Digits == 5 || symbol.Digits == 3)
            {
                if (stopLoss != null)
                    stopLoss /= 10;
                if (takeProfit != null)
                    takeProfit /= 10;
                slippage /= 10;
            }
            int volume = (int)(lots * 100000);
            if (!ExecuteMarketOrder(tradeType, symbol, volume, "FxProQuant_" + magicIndex.ToString("F0"), stopLoss, takeProfit, slippage, comment).IsSuccessful)
            {
                Thread.Sleep(400);
                return false;
            }
            return true;
        }

        TriState _SendPending(double magicIndex, bool noOrders, string symbolCode, PendingOrderType poType, TradeType tradeType, double lots, int priceAction, double priceValue, double? stopLoss, double? takeProfit,
        DateTime? expiration, string comment)
        {
            Symbol symbol = (Symbol.Code == symbolCode) ? Symbol : MarketData.GetSymbol(symbolCode);
            if (noOrders && PendingOrders.__Find("FxProQuant_" + magicIndex.ToString("F0"), symbol) != null)
                return new TriState();
            if (stopLoss < 1)
                stopLoss = null;
            if (takeProfit < 1)
                takeProfit = null;
            if (symbol.Digits == 5 || symbol.Digits == 3)
            {
                if (stopLoss != null)
                    stopLoss /= 10;
                if (takeProfit != null)
                    takeProfit /= 10;
            }
            int volume = (int)(lots * 100000);
            double targetPrice;
            switch (priceAction)
            {
                case 0:
                    targetPrice = priceValue;
                    break;
                case 1:
                    targetPrice = symbol.Bid - priceValue * symbol.TickSize;
                    break;
                case 2:
                    targetPrice = symbol.Bid + priceValue * symbol.TickSize;
                    break;
                case 3:
                    targetPrice = symbol.Ask - priceValue * symbol.TickSize;
                    break;
                case 4:
                    targetPrice = symbol.Ask + priceValue * symbol.TickSize;
                    break;
                default:
                    targetPrice = priceValue;
                    break;
            }
            if (expiration.HasValue && expiration.Value.Ticks == 0)
                expiration = null;
            if (poType == PendingOrderType.Limit)
            {
                if (!PlaceLimitOrder(tradeType, symbol, volume, targetPrice, "FxProQuant_" + magicIndex.ToString("F0"), stopLoss, takeProfit, expiration, comment).IsSuccessful)
                {
                    Thread.Sleep(400);
                    return false;
                }
                return true;
            }
            else if (poType == PendingOrderType.Stop)
            {
                if (!PlaceStopOrder(tradeType, symbol, volume, targetPrice, "FxProQuant_" + magicIndex.ToString("F0"), stopLoss, takeProfit, expiration, comment).IsSuccessful)
                {
                    Thread.Sleep(400);
                    return false;
                }
                return true;
            }
            return new TriState();
        }

        TriState _ModifyPosition(double magicIndex, string symbolCode, int slAction, double slValue, int tpAction, double tpValue)
        {
            Symbol symbol = (Symbol.Code == symbolCode) ? Symbol : MarketData.GetSymbol(symbolCode);
            var pos = Positions.Find("FxProQuant_" + magicIndex.ToString("F0"), symbol);
            if (pos == null)
                new TriState();
            double? sl, tp;
            if (slValue == 0)
                sl = null;
            else
            {
                switch (slAction)
                {
                    case 0:
                        sl = pos.StopLoss;
                        break;
                    case 1:
                        if (pos.TradeType == TradeType.Buy)
                            sl = pos.EntryPrice - slValue * symbol.TickSize;
                        else
                            sl = pos.EntryPrice + slValue * symbol.TickSize;
                        break;
                    case 2:
                        sl = slValue;
                        break;
                    default:
                        sl = pos.StopLoss;
                        break;
                }
            }
            if (tpValue == 0)
                tp = null;
            else
            {
                switch (tpAction)
                {
                    case 0:
                        tp = pos.TakeProfit;
                        break;
                    case 1:
                        if (pos.TradeType == TradeType.Buy)
                            tp = pos.EntryPrice + tpValue * symbol.TickSize;
                        else
                            tp = pos.EntryPrice - tpValue * symbol.TickSize;
                        break;
                    case 2:
                        tp = tpValue;
                        break;
                    default:
                        tp = pos.TakeProfit;
                        break;
                }
            }
            if (!ModifyPosition(pos, sl, tp).IsSuccessful)
            {
                Thread.Sleep(400);
                return false;
            }
            return true;
        }

        TriState _ModifyPending(double magicIndex, string symbolCode, int slAction, double slValue, int tpAction, double tpValue, int priceAction, double priceValue, int expirationAction, DateTime? expiration)
        {
            Symbol symbol = (Symbol.Code == symbolCode) ? Symbol : MarketData.GetSymbol(symbolCode);
            var po = PendingOrders.__Find("FxProQuant_" + magicIndex.ToString("F0"), symbol);
            if (po == null)
                new TriState();
            double targetPrice;
            double? sl, tp;
            if (slValue == 0)
                sl = null;
            else
            {
                switch (slAction)
                {
                    case 0:
                        sl = po.StopLoss;
                        break;
                    case 1:
                        if (po.TradeType == TradeType.Buy)
                            sl = po.TargetPrice - slValue * symbol.TickSize;
                        else
                            sl = po.TargetPrice + slValue * symbol.TickSize;
                        break;
                    case 2:
                        sl = slValue;
                        break;
                    default:
                        sl = po.StopLoss;
                        break;
                }
            }
            if (tpValue == 0)
                tp = null;
            else
            {
                switch (tpAction)
                {
                    case 0:
                        tp = po.TakeProfit;
                        break;
                    case 1:
                        if (po.TradeType == TradeType.Buy)
                            tp = po.TargetPrice + tpValue * symbol.TickSize;
                        else
                            tp = po.TargetPrice - tpValue * symbol.TickSize;
                        break;
                    case 2:
                        tp = tpValue;
                        break;
                    default:
                        tp = po.TakeProfit;
                        break;
                }
            }
            switch (priceAction)
            {
                case 0:
                    targetPrice = po.TargetPrice;
                    break;
                case 1:
                    targetPrice = priceValue;
                    break;
                case 2:
                    targetPrice = po.TargetPrice + priceValue * symbol.TickSize;
                    break;
                case 3:
                    targetPrice = po.TargetPrice - priceValue * symbol.TickSize;
                    break;
                case 4:
                    targetPrice = symbol.Bid - priceValue * symbol.TickSize;
                    break;
                case 5:
                    targetPrice = symbol.Bid + priceValue * symbol.TickSize;
                    break;
                case 6:
                    targetPrice = symbol.Ask - priceValue * symbol.TickSize;
                    break;
                case 7:
                    targetPrice = symbol.Ask + priceValue * symbol.TickSize;
                    break;
                default:
                    targetPrice = po.TargetPrice;
                    break;
            }
            if (expiration.HasValue && expiration.Value.Ticks == 0)
                expiration = null;
            if (expirationAction == 0)
                expiration = po.ExpirationTime;
            if (!ModifyPendingOrder(po, targetPrice, sl, tp, expiration).IsSuccessful)
            {
                Thread.Sleep(400);
                return false;
            }
            return true;
        }

        TriState _ClosePosition(double magicIndex, string symbolCode, double lots)
        {
            Symbol symbol = (Symbol.Code == symbolCode) ? Symbol : MarketData.GetSymbol(symbolCode);
            var pos = Positions.Find("FxProQuant_" + magicIndex.ToString("F0"), symbol);
            if (pos == null)
                new TriState();
            TradeResult result;
            if (lots == 0)
            {
                result = ClosePosition(pos);
            }
            else
            {
                int volume = (int)(lots * 100000);
                result = ClosePosition(pos, volume);
            }
            if (!result.IsSuccessful)
            {
                Thread.Sleep(400);
                return false;
            }
            return true;
        }

        TriState _DeletePending(double magicIndex, string symbolCode)
        {
            Symbol symbol = (Symbol.Code == symbolCode) ? Symbol : MarketData.GetSymbol(symbolCode);
            var po = PendingOrders.__Find("FxProQuant_" + magicIndex.ToString("F0"), symbol);
            if (po == null)
                new TriState();
            if (!CancelPendingOrder(po).IsSuccessful)
            {
                Thread.Sleep(400);
                return false;
            }
            return true;
        }

        bool _OrderStatus(double magicIndex, string symbolCode, int test)
        {
            Symbol symbol = (Symbol.Code == symbolCode) ? Symbol : MarketData.GetSymbol(symbolCode);
            var pos = Positions.Find("FxProQuant_" + magicIndex.ToString("F0"), symbol);
            if (pos != null)
            {
                if (test == 1)
                    return true;
                if (test == 3)
                    return pos.TradeType == TradeType.Buy;
                if (test == 4)
                    return pos.TradeType == TradeType.Sell;
            }
            var po = PendingOrders.__Find("FxProQuant_" + magicIndex.ToString("F0"), symbol);
            if (po != null)
            {
                if (test == 2)
                    return true;
                if (test == 3)
                    return po.TradeType == TradeType.Buy;
                if (test == 4)
                    return po.TradeType == TradeType.Sell;
                if (test == 5)
                    return po.OrderType == PendingOrderType.Limit;
                if (test == 6)
                    return po.OrderType == PendingOrderType.Stop;
            }
            return false;
        }

        int TimeframeToInt(TimeFrame tf)
        {
            if (tf == TimeFrame.Minute)
                return 1;
            else if (tf == TimeFrame.Minute2)
                return 2;
            else if (tf == TimeFrame.Minute3)
                return 3;
            else if (tf == TimeFrame.Minute4)
                return 4;
            else if (tf == TimeFrame.Minute5)
                return 5;
            else if (tf == TimeFrame.Minute10)
                return 10;
            else if (tf == TimeFrame.Minute15)
                return 15;
            else if (tf == TimeFrame.Minute30)
                return 30;
            else if (tf == TimeFrame.Hour)
                return 60;
            else if (tf == TimeFrame.Hour4)
                return 240;
            else if (tf == TimeFrame.Daily)
                return 1440;
            else if (tf == TimeFrame.Weekly)
                return 10080;
            else if (tf == TimeFrame.Monthly)
                return 43200;
            return 1;
        }

        TriState Sell(double magicIndex, double Lots, int StopLossMethod, double stopLossValue, int TakeProfitMethod, double takeProfitValue, double Slippage, double MaxOpenTrades, double MaxFrequencyMins, string TradeComment)
        {
            double? stopLossPips, takeProfitPips;
            int numberOfOpenTrades = 0;
            var res = new TriState();

            foreach (Position pos in Positions.FindAll("FxProQuant_" + magicIndex.ToString("F0"), Symbol))
            {
                numberOfOpenTrades++;
            }

            if (MaxOpenTrades > 0 && numberOfOpenTrades >= MaxOpenTrades)
                return res;

            if (MaxFrequencyMins > 0)
            {
                if (((TimeSpan)(Server.Time - LastTradeExecution)).TotalMinutes < MaxFrequencyMins)
                    return res;

                foreach (Position pos in Positions.FindAll("FxProQuant_" + magicIndex.ToString("F0"), Symbol))
                {
                    if (((TimeSpan)(Server.Time - pos.EntryTime)).TotalMinutes < MaxFrequencyMins)
                        return res;
                }
            }

            int pipAdjustment = (int)(Symbol.PipSize / Symbol.TickSize);

            if (stopLossValue > 0)
            {
                if (StopLossMethod == 0)
                    stopLossPips = stopLossValue / pipAdjustment;
                else if (StopLossMethod == 1)
                    stopLossPips = stopLossValue;
                else
                    stopLossPips = (stopLossValue - Symbol.Bid) / Symbol.PipSize;
            }
            else
                stopLossPips = null;

            if (takeProfitValue > 0)
            {
                if (TakeProfitMethod == 0)
                    takeProfitPips = takeProfitValue / pipAdjustment;
                else if (TakeProfitMethod == 1)
                    takeProfitPips = takeProfitValue;
                else
                    takeProfitPips = (Symbol.Bid - takeProfitValue) / Symbol.PipSize;
            }
            else
                takeProfitPips = null;

            Slippage /= pipAdjustment;

            long volume = Symbol.NormalizeVolume(Lots * 100000, RoundingMode.ToNearest);

            if (!ExecuteMarketOrder(TradeType.Sell, Symbol, volume, "FxProQuant_" + magicIndex.ToString("F0"), stopLossPips, takeProfitPips, Slippage, TradeComment).IsSuccessful)
            {
                Thread.Sleep(400);
                return false;
            }

            LastTradeExecution = Server.Time;
            return true;
        }

        TriState Buy(double magicIndex, double Lots, int StopLossMethod, double stopLossValue, int TakeProfitMethod, double takeProfitValue, double Slippage, double MaxOpenTrades, double MaxFrequencyMins, string TradeComment)
        {
            double? stopLossPips, takeProfitPips;
            int numberOfOpenTrades = 0;
            var res = new TriState();

            foreach (Position pos in Positions.FindAll("FxProQuant_" + magicIndex.ToString("F0"), Symbol))
            {
                numberOfOpenTrades++;
            }

            if (MaxOpenTrades > 0 && numberOfOpenTrades >= MaxOpenTrades)
                return res;

            if (MaxFrequencyMins > 0)
            {
                if (((TimeSpan)(Server.Time - LastTradeExecution)).TotalMinutes < MaxFrequencyMins)
                    return res;

                foreach (Position pos in Positions.FindAll("FxProQuant_" + magicIndex.ToString("F0"), Symbol))
                {
                    if (((TimeSpan)(Server.Time - pos.EntryTime)).TotalMinutes < MaxFrequencyMins)
                        return res;
                }
            }

            int pipAdjustment = (int)(Symbol.PipSize / Symbol.TickSize);

            if (stopLossValue > 0)
            {
                if (StopLossMethod == 0)
                    stopLossPips = stopLossValue / pipAdjustment;
                else if (StopLossMethod == 1)
                    stopLossPips = stopLossValue;
                else
                    stopLossPips = (Symbol.Ask - stopLossValue) / Symbol.PipSize;
            }
            else
                stopLossPips = null;

            if (takeProfitValue > 0)
            {
                if (TakeProfitMethod == 0)
                    takeProfitPips = takeProfitValue / pipAdjustment;
                else if (TakeProfitMethod == 1)
                    takeProfitPips = takeProfitValue;
                else
                    takeProfitPips = (takeProfitValue - Symbol.Ask) / Symbol.PipSize;
            }
            else
                takeProfitPips = null;

            Slippage /= pipAdjustment;
            long volume = Symbol.NormalizeVolume(Lots * 100000, RoundingMode.ToNearest);

            if (!ExecuteMarketOrder(TradeType.Buy, Symbol, volume, "FxProQuant_" + magicIndex.ToString("F0"), stopLossPips, takeProfitPips, Slippage, TradeComment).IsSuccessful)
            {
                Thread.Sleep(400);
                return false;
            }
            LastTradeExecution = Server.Time;
            return true;
        }

        int Number_of_Open_Trades(double magicIndex)
        {
            int res = 0;
            foreach (Position pos in Positions.FindAll("FxProQuant_" + magicIndex.ToString("F0"), Symbol))
            {
                res++;
            }
            return res;
        }

    }
}

public struct TriState
{
    public static readonly TriState NonExecution = new TriState(0);
    public static readonly TriState False = new TriState(-1);
    public static readonly TriState True = new TriState(1);
    sbyte value;
    TriState(int value)
    {
        this.value = (sbyte)value;
    }
    public bool IsNonExecution
    {
        get { return value == 0; }
    }
    public static implicit operator TriState(bool x)
    {
        return x ? True : False;
    }
    public static TriState operator ==(TriState x, TriState y)
    {
        if (x.value == 0 || y.value == 0)
            return NonExecution;
        return x.value == y.value ? True : False;
    }
    public static TriState operator !=(TriState x, TriState y)
    {
        if (x.value == 0 || y.value == 0)
            return NonExecution;
        return x.value != y.value ? True : False;
    }
    public static TriState operator !(TriState x)
    {
        return new TriState(-x.value);
    }
    public static TriState operator &(TriState x, TriState y)
    {
        return new TriState(x.value < y.value ? x.value : y.value);
    }
    public static TriState operator |(TriState x, TriState y)
    {
        return new TriState(x.value > y.value ? x.value : y.value);
    }
    public static bool operator true(TriState x)
    {
        return x.value > 0;
    }
    public static bool operator false(TriState x)
    {
        return x.value < 0;
    }
    public static implicit operator bool(TriState x)
    {
        return x.value > 0;
    }
    public override bool Equals(object obj)
    {
        if (!(obj is TriState))
            return false;
        return value == ((TriState)obj).value;
    }
    public override int GetHashCode()
    {
        return value;
    }
    public override string ToString()
    {
        if (value > 0)
            return "True";
        if (value < 0)
            return "False";
        return "NonExecution";
    }
}

public static class PendingEx
{
    public static PendingOrder __Find(this cAlgo.API.PendingOrders pendingOrders, string label, Symbol symbol)
    {
        foreach (PendingOrder po in pendingOrders)
        {
            if (po.SymbolCode == symbol.Code && po.Label == label)
                return po;
        }
        return null;
    }
}

 

abotrader
01 Mar 2014, 22:27

           if (pos == null)
               return  new TriState();

to know exception in your code  do :

try {

// your code here

            } catch (Exception e)
            {
                Print("{0} ", e.StackTrace);

}