How to get Input Variable to Class Scope

[PaulMohn]

The code below displays this in the indicator Parameters window (i.e. the indicator wizard when right clicking the chart):

myInt == 4

myString == 0


How to get it to display both as:

myInt == 4

myString == 4

namespace NinjaTrader.NinjaScript.Indicators
{
public class myind : Indicator
{​

private int myInt;
​

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{​

myInt = 4;​

myString = myInt.ToString();
​

protected void CreateWPFControls()
{​
...
switch(i)
{
case 0:
MyStrings = myInt.ToString();


...
switch(i)
{
case 0:
Myints = myInt.ToString();​
​

Properties

[NinjaScriptProperty]
[Range(0, int.MaxValue)]
[Display(Name="MyInt", Order=0, GroupName="Parameters")]
public int MyInt
{
get { return myInt; }

set { myInt= value; }
}​


[NinjaScriptProperty]
[Display(Name="myString", Order=1, GroupName="Parameters")]
public string myString
{ get; set; }​

[NinjaTrader_Jesse]

Hello PaulMohn,

To set a default for a input you would need to do that in State.SetDefaults like the code you posted.

Based on the code I don't see a problem. You should be able to set the string to a default value from SetDefaults. You may want to try using a Print to make sure the value you are assigning is valid.

[PaulMohn]

Hello PaulMohn,

To set a default for a input you would need to do that in State.SetDefaults like the code you posted.

Based on the code I don't see a problem. You should be able to set the string to a default value from SetDefaults. You may want to try using a Print to make sure the value you are assigning is valid.

Just tested with this minimal code and it works, but not on the production code with the 2 switches.
Is there something the 2 switches prevents?

#region Using declarations
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Xml.Serialization;
using NinjaTrader.Cbi;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.Gui.Tools;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.NinjaScript.DrawingTools;
#endregion

//This namespace holds Indicators in this folder and is required. Do not change it.
namespace NinjaTrader.NinjaScript.Indicators
{
    public class classscopevariableuserinput : Indicator
    {
        private int myInt;
        
        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description                                    = @"Enter the description for your new custom Indicator here.";
                Name                                        = "classscopevariableuserinput";
                Calculate                                    = Calculate.OnBarClose;
                IsOverlay                                    = false;
                DisplayInDataBox                            = true;
                DrawOnPricePanel                            = true;
                DrawHorizontalGridLines                        = true;
                DrawVerticalGridLines                        = true;
                PaintPriceMarkers                            = true;
                ScaleJustification                            = NinjaTrader.Gui.Chart.ScaleJustification.Right;
                //Disable this property if your indicator requires custom values that cumulate with each new market data event.
                //See Help Guide for additional information.
                IsSuspendedWhileInactive                    = true;

                myInt = 4;​

                myString = myInt.ToString();
            }
            else if (State == State.Configure)
            {
            }
        }

        protected override void OnBarUpdate()
        {
            //Add your custom indicator logic here.
        }
        
        #region Properties

        [NinjaScriptProperty]
        [Range(0, int.MaxValue)]
        [Display(Name="MyInt", Order=0, GroupName="Parameters")]
        public int MyInt
        {
        get { return myInt; }

        set { myInt= value; }
        }​


        [NinjaScriptProperty]
        [Display(Name="myString", Order=1, GroupName="Parameters")]
        public string myString
        { get; set; }​
        
        #endregion
    }
}

#region NinjaScript generated code. Neither change nor remove.

namespace NinjaTrader.NinjaScript.Indicators
{
    public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
    {
        private classscopevariableuserinput[] cacheclassscopevariableuserinput;
        public classscopevariableuserinput classscopevariableuserinput(int myInt, string myString)
        {
            return classscopevariableuserinput(Input, myInt, myString);
        }

        public classscopevariableuserinput classscopevariableuserinput(ISeries<double> input, int myInt, string myString)
        {
            if (cacheclassscopevariableuserinput != null)
                for (int idx = 0; idx < cacheclassscopevariableuserinput.Length; idx++)
                    if (cacheclassscopevariableuserinput[idx] != null && cacheclassscopevariableuserinput[idx].MyInt == myInt && cacheclassscopevariableuserinput[idx].myString == myString && cacheclassscopevariableuserinput[idx].EqualsInput(input))
                        return cacheclassscopevariableuserinput[idx];
            return CacheIndicator<classscopevariableuserinput>(new classscopevariableuserinput(){ MyInt = myInt, myString = myString }, input, ref cacheclassscopevariableuserinput);
        }
    }
}

namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
{
    public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
    {
        public Indicators.classscopevariableuserinput classscopevariableuserinput(int myInt, string myString)
        {
            return indicator.classscopevariableuserinput(Input, myInt, myString);
        }

        public Indicators.classscopevariableuserinput classscopevariableuserinput(ISeries<double> input , int myInt, string myString)
        {
            return indicator.classscopevariableuserinput(input, myInt, myString);
        }
    }
}

namespace NinjaTrader.NinjaScript.Strategies
{
    public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
    {
        public Indicators.classscopevariableuserinput classscopevariableuserinput(int myInt, string myString)
        {
            return indicator.classscopevariableuserinput(Input, myInt, myString);
        }

        public Indicators.classscopevariableuserinput classscopevariableuserinput(ISeries<double> input , int myInt, string myString)
        {
            return indicator.classscopevariableuserinput(input, myInt, myString);
        }
    }
}

#endregion

[NinjaTrader_Jesse]

Hello PaulMohn,

If that works but your other code does not that means the other code has a problem with whatever you are doing in that script. You would need to debug your other code to make sure a valid value is being passed as a default. If you have a default template you would also need to remove that if you previously saved a default with other values.

[PaulMohn]

Seems fixed this way:

The State.SetDefaults variables order matters (the int variable must come before the string)

This does not work / returns

myInt == 4

myString == 0


protected override void OnStateChange()
{
if (State == State.SetDefaults)
{

myString = myInt.ToString();

myInt = 4;


This works / returns

myInt == 4

myString == 4

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{

myInt = 4;

myString = myInt.ToString();

[NinjaTrader_Jesse]

Hello PaulMohn,

Unfortunately I couldn't say what is happening in your specific script. The code you provided now does not make sense, you need to assign a value to a variable before it can be read. The default value for an int is 0 so that should result in a 0 value unless you have a value saved in a default template.

myint will start at 0
Code is executed line by line top to bottom

[PaulMohn]

The script is working with the given order.

[NinjaTrader_Jesse]

Hello PaulMohn,

That is not the same code that you originally asked about and is a full script so I wouldn't be able to comment on that. The code you previously provided is in the wrong order, myInt would need to be assigned a value before you could convert it to a string that represents its value. You can learn about how C# executes code in external C# learning resources if that would be helpful to you.