Print from AddOns

[tornadoatc]

Hello,

NT8 documentation states that the NT7 UserDefinedMethods concept has been moved to the AddOns and the following provided as a template.

[COLOR=#0000ff]namespace[/COLOR]NinjaTrader.NinjaScript.Indicators
{
[COLOR=#0000ff]public[/COLOR]partial[COLOR=#0000ff]class[/COLOR]MyMethods:Indicator
{
[COLOR=#008000]//Sample method which calculates the delta of two prices[/COLOR]
[COLOR=#0000ff]public[/COLOR][COLOR=#0000ff]static[/COLOR][COLOR=#0000ff]double[/COLOR]calculateDelta([COLOR=#0000ff]double[/COLOR]firstPrice,[COLOR=#0000ff]double[/COLOR]secondPrice)
{
[COLOR=#0000ff]return[/COLOR]Math.Abs(firstPrice-secondPrice);
}
 
[COLOR=#008000]//Sample method which prints Position information[/COLOR]
[COLOR=#0000ff]public[/COLOR][COLOR=#0000ff]static[/COLOR][COLOR=#0000ff]void[/COLOR]printPositionInfo(Positionposition)
{
Print(String.Format([COLOR=#800000]"{0}: {1} {2} at {3}"[/COLOR],position.Instrument,position.Quantity,position.MarketPosition,position.AveragePrice));
}

A wizard is now provided and the generated code is now using NinjaTrader.NinjaScript.AddOns and the class now inherits from NinjaTrader.NinjaScript.AddOnBase.

I have added the required "using" statement in my Indicators to enable calling of the methods but I am not able to use the Print Method as above. I am getting an error on compile stating "An object reference is required for the non-static ... method .. NinjaTrader.NinjaScript.NinjaScript.Print(object)" .

What do I need to modify to be able to use the Print method from within classes that inherit from AddOnBase?

Thanks,

[cls71]

Hello,

when the Print method is not available, you can use this:

NinjaTrader.Code.Output.Process(  mystring, PrintTo.OutputTab1 );

or

NinjaTrader.Code.Output.Process(  mystring, PrintTo.OutputTab2 );

[NinjaTrader_MichaelM]

Hello tornadoatc,

Thank you for writing in. In your particular case I would recommend using the method cls71 described. More information is available in our help guide here: http://ninjatrader.com/support/helpG...ightsub=output

Please let me know if you experience any difficulties or if I may be of further assistance.

[fx.practic]

Is the way to do this in NT7 ?

[NinjaTrader_DaveI]

Is the way to do this in NT7 ?

This should not be an issue in NinjaTrader 7, as you can use Print() directly in UserDefinedMethods. This trick applies to NinjaTrader 8 only, and relates to printing output when you are outside of the namespace containing the NinjaScript Print() method.

[fx.practic]

Thank You.

[DaFish]

Hi, I worked on this with NT8 and works nicely.

http://ninjatrader.com/support/forum/showthread.php?p=426013#post426013

Code attached.

[fx.practic]

It looks, there is way to do it in NT7 using delegate.

Working example in attachment.

        
       [COLOR=Blue]protected override void [/COLOR]OnStartUp()
        {        
            Print_class Print_Obj = [COLOR=Blue]new [/COLOR]Print_class();
            Print_Obj.Print = Print;
            
            Print_Obj.Print_From_Class( "#1: "+ "Hello World!" );
            Print_Obj.Print                        ( "#2: "+ "Hello World!" );
        }

        [COLOR=Blue]public class[/COLOR] Print_class
        {
            [COLOR=Blue]public delegate void[/COLOR] Print_delegate( [COLOR=Blue]string [/COLOR]s );
            [COLOR=Blue]public [/COLOR]Print_delegate Print;
            
            [COLOR=Blue]public void[/COLOR] Print_From_Class( [COLOR=Blue]string [/COLOR]s )
            {
                Print( s );
            }
        }

[DaFish]

The Delegate is a nice option. Thanks for that.

When I moved from NT7 to NT8, I had a lot of issues because of Print, and because of a lot of custom routines I had put in UserDefinedMethods (like converting ticks to price... .). I am attaching the code that NT Support help me figure out. It utilizes an AddOn to provide the same kind of functionality like UserDefined Methods.

I have put my print routine in there too - this allows you to print to either output logs.