Dictionary

[zachj]

In my initialize section I'm trying to use Dictionary. I'm getting compile errors..type or namespace Dictionary not found and _stockCounts does not exist. Something basic I'm doing incorrectly?

        protected override void Initialize()
        {
Dictionary<int, int> _stockCounts = new Dictionary<int, int>();
			
#region Primary 5min			
//Primary 5min
_stockCounts.Add("ACE",PeriodType.Minute, 5);
_stockCounts.Add("ACN",PeriodType.Minute, 5);
_stockCounts.Add("ADT",PeriodType.Minute, 5);

    CalculateOnBarClose = true;

        }

[koganam]

In my initialize section I'm trying to use Dictionary. I'm getting compile errors..type or namespace Dictionary not found and _stockCounts does not exist. Something basic I'm doing incorrectly?

        protected override void Initialize()
        {
Dictionary<int, int> _stockCounts = new Dictionary<int, int>();
            
#region Primary 5min            
//Primary 5min
_stockCounts.Add("ACE",PeriodType.Minute, 5);
_stockCounts.Add("ACN",PeriodType.Minute, 5);
_stockCounts.Add("ADT",PeriodType.Minute, 5);

    CalculateOnBarClose = true;

        }

Have you specified the correct namespace?

[COLOR=Blue]using[/COLOR] System.Collections.Generic;

[NinjaTrader_Bertrand]

zachj, since more general C# not an area we could fully support, can you check into koganams's thought - that at minimum would need to be present.

Further you could check into the Spearman indicator offered in the sharing section, it uses a SortedDictionary - http://www.ninjatrader.com/support/f...d=4&linkid=442

[zachj]

That fixed part of it. thanks. But now getting
"No overload for method "Add" takes "3" arguments. Can I not do as I have below...

_stockCounts.Add("ACE",PeriodType.Minute, 5);

[NinjaTrader_Bertrand]

I would expect an issue with a dictionary with 3 parameters, you have a key and a value always as pair here - http://www.dotnetperls.com/dictionary

[zachj]

Ok so if I have as below, is that by chance giving me a 5min or what would the 5 represent here?

_stockCounts.Add("ACE", 5);

[koganam]

Ok so if I have as below, is that by chance giving me a 5min or what would the 5 represent here?

_stockCounts.Add("ACE", 5);

You defined your Dictionary thus:

Dictionary<int, int> _stockCounts = new Dictionary<int, int>();

That means that the terms must both be integers. Your code, with a string, is not kosher.

[zachj]

Dictionary<string, int> _stockCounts = new Dictionary<string, int>();

either way if I fix the first argument to be a string, I still only have two arguments to work with and need 3. I don't think Dictionary will take 3. I can't define the PeriodType.

[koganam]

Dictionary<string, int> _stockCounts = new Dictionary<string, int>();

either way if I fix the first argument to be a string, I still only have two arguments to work with and need 3. I don't think Dictionary will take 3. I can't define the PeriodType.

No. A Dictionary takes exactly 2 parameters. If you want 3 parameters, you are looking for a different kind of code entity. What you need depends on what you are trying to do. Your code does not show your intent, so there is little that I can say.

[zachj]

I was trying to use Dictionary so that I can count and store the # of entries for a multi-instrument script.

[koganam]

I was trying to use Dictionary so that I can count and store the # of entries for a multi-instrument script.

You might want to use a List<> of structs, where the struct contains the information that you want to track.

[zachj]

I'm not really sure what that is, will have to research that. Thanks

[zachj]

You might want to use a List<> of structs, where the struct contains the information that you want to track.

Would I have something like this...

List<Indexes> IndexItems = new List<Indexes>();

list.Add("ACE", PeriodType.Minute, 5);
list.Add("ACN", PeriodType.Minute, 5);
list.Add("ADT", PeriodType.Minute, 5);

Then in the OnBarUpdate section have something like..

public struct Indexes
{
public string ACE { get; set; }
public string ACN { get; set; }
public string ADT { get; set; }
}

[zachj]

You might want to use a List<> of structs, where the struct contains the information that you want to track.

Ok giving this another shot koganam, how about this?...

public struct StockEntry
{
public string Name { get; set; }
public PeriodType Period { get; set; }
public int Value { get; set; }
public int Count { get; set; }
}

protected override void Initialize()
{

List<StockEntry> _stocks = new List<StockEntry>();

//Primary 5min
_stocks.Add(new StockEntry { Name = "ABC", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACE", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACN", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ADT", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "SCTY", Period = PeriodType.Minute, Value = 5, Count = 0 } );

//Secondary 1min
_stocks.Add(new StockEntry { Name = "ABC", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACE", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACN", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ADT", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "SCTY", Period = PeriodType.Minute, Value = 1, Count = 0 } );

}

[koganam]

Ok giving this another shot koganam, how about this?...

public struct StockEntry
{
public string Name { get; set; }
public PeriodType Period { get; set; }
public int Value { get; set; }
public int Count { get; set; }
}

protected override void Initialize()
{

List<StockEntry> _stocks = new List<StockEntry>();

//Primary 5min
_stocks.Add(new StockEntry { Name = "ABC", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACE", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACN", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ADT", Period = PeriodType.Minute, Value = 5, Count = 0 } );
_stocks.Add(new StockEntry { Name = "SCTY", Period = PeriodType.Minute, Value = 5, Count = 0 } );

//Secondary 1min
_stocks.Add(new StockEntry { Name = "ABC", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACE", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ACN", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "ADT", Period = PeriodType.Minute, Value = 1, Count = 0 } );
_stocks.Add(new StockEntry { Name = "SCTY", Period = PeriodType.Minute, Value = 1, Count = 0 } );

}

The pristine way to define a struct would be as follows:

public struct StockEntry
{
//declare the members
  public string Name;
  public PeriodType Period;
  public int Value;
  public int Count;

//declare the constructor
public StockEntry(string strName, PeriodType ptPeriod, int intValue, int intCount)
{
Name = strName;
Period = ptPeriod;
Value = intValue;
Count = intCount;
}
}

ref: http://msdn.microsoft.com/en-us/libr...=vs.90%29.aspx

You use brackets, not braces, when you declare and initialize a struct.

Like so:

StockEntry ("ABC", PeriodType.Minute, 1, 0)

The keyword new is not mandatory.