Object reference not set to an instance of an object

Author: Assenzio

Creation Date: 9/10/2014 7:29 AM

Wealth Lab » WealthScript (.NET) » Object reference not set to an instance of an object

Assenzio

9/10/2014 7:29 AM

I have the piece of code below that always worked fine but I don't know why isn't working anymmore. I am a bit confused about that, hope you can help me finding a solution.

CODE:
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Running the strategy, whatever ticker I put (I am using Bloomberg) in this expression:

Index = GetExternalSymbol("SX5E", true).Close;

I obtained this error (on the instruction above):

Runtime Error:Object reference not set to an instance of an object at WealthLab.Strategies.QuantitativeBehaviour.Execute() etc etc

Can someone explain where I am wrong ?

Size:

Color:

I have the piece of code below that always worked fine but I don't know why isn't working anymmore. I am a bit confused about that, hope you can help me finding a solution.

[CODE]

using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using WealthLab.Indicators;
using Community.Indicators;
using Community.Components;

namespace WealthLab.Strategies
{
   
   public class QuantitativeBehaviour : WealthScript
   {      
      #region Input Parameter Declaration
      
      private StrategyParameter Ratio;
      private StrategyParameter StartBar;
      private StrategyParameter RatioPrime;
      private StrategyParameter RatioType;
      private StrategyParameter DatesMode;
      private StrategyParameter Indicator;
      private StrategyParameter Export;
      private StrategyParameter External;
      private StrategyParameter Uscita;
      private StrategyParameter Level;
      private StrategyParameter Entrata;
      private StrategyParameter IndValue;   
      private StrategyParameter Multiple;      
      
      public QuantitativeBehaviour()
      
      {
         StartBar  = CreateParameter("Start Bar", 21, 5, 300, 1);
         Entrata   = CreateParameter("Entry Bar", 0, -250, 250, 1);
         Uscita    = CreateParameter("Exit Bar", 65, 1, 300, 1);         
         DatesMode = CreateParameter("Using Dates", 0, 0, 1, 1);
         Multiple  = CreateParameter("Multiple Signal", 0, 0, 1, 1);
         External  = CreateParameter("External Data", 0, 0, 1, 1);
         Ratio     = CreateParameter("Ratio", 1, 0, 1, 1);
         RatioType = CreateParameter("Ratio Type", 2, 0, 8, 1);
         RatioPrime= CreateParameter("Ratio Prime", 1, 0, 1, 1);         
         Indicator = CreateParameter("Pattern", 1, 0, 40, 1);
         IndValue  = CreateParameter("Index Value", 1, -2000, 2000, 1);
         Level     = CreateParameter("Threshold", 0, -300, +300, 1);
         Export    = CreateParameter("Export Data", 0, 0, 1, 1);                        
         
      }
      
      #endregion Input Parameter Declaration
      
   
      protected override void Execute()
      {            
         
         #region Inizializzazioni
         HideVolume();
         ClearDebug();         
         DataSeries Index     = new DataSeries(Bars, "External Data"); // Create an empty series
         DataSeries Index1    = new DataSeries(Bars, "External Data"); // Create an empty series
         DataSeries Original  = new DataSeries(Bars, "Serie Originale Buy/Sell");
         DataSeries Events    = new DataSeries(Bars,"Events");      
         
         DataSeries FiftyTwoWeekHigh = new DataSeries(Bars,"52 Week High");         
         DataSeries FiftyTwoWeekLow  = new DataSeries(Bars,"52 Week Lows");         
         if(Bars.Scale==BarScale.Daily)
         {
            SetScaleWeekly();
            FiftyTwoWeekHigh = Highest.Series(High,52);         
            FiftyTwoWeekLow  = Lowest.Series(Low ,52);         
            RestoreScale();
            FiftyTwoWeekHigh = Synchronize(FiftyTwoWeekHigh);
            FiftyTwoWeekLow  = Synchronize(FiftyTwoWeekLow);            
         }
         
          DataSeries DayLowest = Lowest.Series(Low,6);
          DataSeries DayHighest = Highest.Series(High,21);
         /* PlotSeries( PricePane, DayLowest, Color.Green, LineStyle.Dotted, 1 );  */
         /* PlotSeries( PricePane, DayHighest, Color.Green, LineStyle.Dotted, 1 ); */
         /* PlotSeries( PricePane, FiftyTwoWeekHigh, Color.Green, LineStyle.Dotted, 1 );  */
         /* PlotSeries( PricePane, FiftyTwoWeekLow, Color.Green, LineStyle.Dotted, 1 ); */
         
         //string Start = Utility.Input("Settare i Parametri a fianco. Poi premi un tasto.");
         #endregion Inizializzazioni               
         
         // Buy Specific Dates ?
         if (DatesMode.ValueInt == 1)
         { // Path to the data file containing external dates
            SeriesHelper sh = new SeriesHelper( this );   
            try
            {   
               string path = @"c:\test.txt";                                
               int cont = 0;
               if (File.Exists(path))
               {                  
                  using (StreamReader sr = new StreamReader(path))    
                  {
                     while (!sr.EndOfStream)
                     {   
                        string source = sr.ReadLine();
                        // Skip empty lines and garbage
                        if (source.Length <= 1)
                           continue;
                        // Import data into a series
                        sh.FillSeriesFromFile(Events,path,Char.Parse(","),"yyyyMMdd");
                        cont++;                        
                     }
                     sr.Close();   
                  }   
               }
               else
               {File.Delete(path);}
            }
            catch (Exception e)
               {PrintDebug("File Not Found!");}
         }
         
         // Preleva Dati Esterni - AGGIORNAMENTO A MANO TICKER E INDICATORS
         if (External.ValueInt == 1)
         {          
            //string First = Utility.Input("Series 1 Symbol ?");
            //string Second= Utility.Input("Series 2 Symbol ?");
            PrintDebug("Get This Error ?");
            Index  = GetExternalSymbol("SX5E", true).Close;           
            Index1 = GetExternalSymbol(".SPXDA", true).Close;
            PrintDebug("And This Error ?");
            
            // Activate These Lines If You Want a Second Plot //
            
            /* ChartPane Pane2 = CreatePane( 40, false, true );
            DrawLabel(Pane2,"Calculated Index",Color.Black);
            PlotSeries( Pane2, Index1, Color.Black, LineStyle.Histogram, 1);
            DrawHorzLine(Pane2,Level.ValueInt,Color.Red,WealthLab.LineStyle.Dashed, 1);
            */
         } //More code followed [/code]

Running the strategy, whatever ticker I put (I am using Bloomberg) in this expression:

Index = GetExternalSymbol("SX5E", true).Close;

I obtained this error (on the instruction above):

Runtime Error:Object reference not set to an instance of an object at WealthLab.Strategies.QuantitativeBehaviour.Execute() etc etc

Can someone explain where I am wrong ?

Eugene

9/10/2014 7:53 AM

It's a very popular error. Amazing but every other poster of our forum has started her/his own thread called "Object reference not set error". (Takes a second to search to prove it: Google link.)

Fortunately, our helpful Knowledge Base is here to suggest solutions for this and other errors - for years:

Errors | Strategy > Object reference not set to an instance of an object

P.S. If that's not a typo, then you have nothing to worry about but AFAIK, indices with leading dot belong to Fidelity WLP and aren't available in WLD: