B8 Import Fails when Stroke or DateTime properties are used

[RanchoDinero]

To repro:

1) Add the attached script to the Indicators folder. Compile, then add to a chart. Notice the DateTime and Stroke properties appear and work fine in properties window.

2) Export the attached script as a compiled assembly.

3) Import the exported .zip on another machine. The following compile errors will be logged (several times), preventing the assembly from being imported:

The type or namespace name 'Stroke' could not be found (are you missing a using directive or an assembly reference?)

The type or namespace name 'DateTime' could not be found (are you missing a using directive or an assembly reference?)

[NinjaTrader_ZacharyG]

Hello RanchoDinero,

Thank you for writing in.

Please note that only types that can be Xml Serialized should be marked as a NinjaScriptProperty. Both Stroke and DateTime cannot be serialized.

Please take a look at the NinjaTrader 8 help guide at this link for more information about the NinjaScriptProperty attribute: http://ninjatrader.com/support/helpG...yattribute.htm

As an example for the BrokenDate DateTime property to work properly:

[XmlIgnore]
[Browsable(false)]
public DateTime BrokenDate
{ get; set; }

[NinjaScriptProperty]
[Display(Name="", Order=1, GroupName="General", Description="")]
public string BrokenDateSerialize
{
     get { return BrokenDate.ToString(); }
     set { BrokenDate = DateTime.Parse(value); }
}

Please, let us know if we may be of further assistance.

[RanchoDinero]

Does doing this resolve the export/import issue?

Also, it would be fantastic to have an actual list of types which need to be serialized in this way. Or a list of types which don't. Either way.

[NinjaTrader_ZacharyG]

Hello RanchoDinero,

Yes, once I have used a simple type as the NinjaScriptProperty against types which cannot be serialized, such as the DateTime example provided, I was able to both export and import the script.

[RanchoDinero]

Gotcha. Thanks. That list I mentioned would be fantastic for the help file. How to know otherwise?

[NinjaTrader_ZacharyG]

Hello RanchoDinero,

Unfortunately, this isn't a simple question to answer.

If it is not a value type, or a simple object/struct, it probably cannot be serialized.

I would suggest taking a look at this MSDN article for more information about this: https://msdn.microsoft.com/en-us/lib...v=vs.110).aspx