very frustrating: Templates not saving, no errors

[Skifree]

I seem to regularly have this incident and it's a PITA to debug. When the strategy analyzer runs into a value it has some problem with (even if the compiler does not), the template wills save, as 1KB looking like this:

<?xml version="1.0" encoding="utf-8"?>
<StrategyTemplate>
<StrategyType>NinjaTrader.NinjaScript.Strategies .O rganizedStrategy.General</StrategyType>
<Strategy />
</StrategyTemplate>

I have to go through and start commenting out sections of code until it saves, typically it's a variable that compiles and even works - but for some reason breaks the strategy analyzer saving mechanism. Does anyone else have this?

[NinjaTrader_ChelseaB]

Hello Skifree,

May I have an export of a reduced test script that just adds the property that causes the behavior?

To export a NinjaTrader 8 NinjaScript so this can be shared and imported by the recipient do the following:

1. Click Tools -> Export -> NinjaScript Add-on...
2. Click the 'add' link -> check the box(es) for the script(s) and reference(s) you want to include
3. Click the 'Export' button
4. Enter the script name in the value for 'File name:'
5. Choose a save location -> click Save
6. Click OK to clear the export location message

By default your exported file will be in the following location:

• (My) Documents/NinjaTrader 8/bin/Custom/ExportNinjaScript/<export_file_name.zip>

Below is a link to the help guide on Exporting NinjaScripts.

http://ninjatrader.com/support/helpGuides/nt8/export.htm

Once exported, please attach the file as an attachment to your reply.

[Skifree]

It's not totally feasible to reduce the code, but I believe it's due to the declaration of a custom indicator. Everything saves when i remove it.

namespace NinjaTrader.NinjaScript.Strategies.OrganizedStrate gy
{
public partial class MainStrategy : Strategy
{
// other code...
public ShadowsMA ShadowsMA1;

// other code...

else if (State == State.DataLoaded)
{
ShadowsMA1 = ShadowsMA(ShadowsMAPeriod,ShadowsMAPeriod_Smooth,S hadowsMAPeriod_volume);
AddChartIndicator(ShadowsMA1);
}
}



ShadowsMA indicator uses these values:

namespace NinjaTrader.NinjaScript.Indicators
{
public class ShadowsMA : Indicator
{
private double alpha; // Smoothing factor used in EMA calculation
private double decayFactor = 0.5; // Decay factor when the current wick is smaller than the previous

// Exposing these as public so they can be accessed like ShadowsMA.UpperWick[0]
public Series<double> UpperWick { get; private set; }
public Series<double> LowerWick { get; private set; }

// indicator code...

[NinjaScriptProperty]
[Range(1, int.MaxValue)]
[Display(Name = "PeriodInput", Order = 1, GroupName = "Parameters")]
public int PeriodInput { get; set; }

[NinjaScriptProperty]
[Range(1, int.MaxValue)]
[Display(Name = "SmoothingPeriod", Order = 2, GroupName = "Parameters")]
public int SmoothingPeriod { get; set; }

[NinjaScriptProperty]
[Range(1, int.MaxValue)]
[Display(Name = "VolumeFilterMin", Order = 3, GroupName = "Parameters")]
public int VolumeFilterMin { get; set; }
}

[NinjaTrader_ChelseaB]

Hello Skifree,

May I confirm you are using the XmlIgnore attribute on all public variables that are not string, double, int, bool, stroke, or enum?
This includes the public Series<double> objects.

[Skifree]

That resolved it - why is there no error when saving a template for something like this?

[NinjaTrader_ChelseaB]

Hello Skifree,

There typically are errors that appear on the Log tab of the Control Center when saving an xml file of a script that has improper public properties/serialization.