Programmatically Create an Array of Containers in TestStand

Question

Problem

I'm trying to create an array of containers in c# to pass back to TestStand as test results, and there doesn't appear to be an easy way to accomplish this task.

Motivation

In c# I have results contained in List<Dictionary<string,object>> from my test system and I'd like to have those results show up in my test report. The Dictionary<string,object> has a variable number of elements of different types.

Attempted Solutions

If given:

var result = sequenceContext.AsPropertyObject().EvaluateEx(destination, EvaluationOptions.EvalOption_NoOptions);

Where

• sequenceContext is NationalInstruments.TestStand.Interop.API.SequenceContext
• destination is where I'd like my results to be saved in my TestStand report, i.e. Step.Result.TestResultDestination

I've tried a few different methods to add an array of containers to result, such as:

var newPropertyObject = sequenceContext.Engine.NewPropertyObject(PropertyValueTypes.PropValType_Container, true, string.Empty, PropertyOptions.PropOption_InsertIfMissing);
result.SetPropertyObject("TestResultDestination", PropertyOptions.PropOption_InsertIfMissing, newPropertyObject);
result.SetFlags("TestResultDestination", PropertyOptions.PropOption_NoOptions, PropertyFlags.PropFlags_IncludeInReport | PropertyFlags.PropFlags_IsMeasurementValue);

Which adds the array of containers to my result, however any attempt to then insert an element into the array of containers results in an exception.

Thoughts?

Answer 1

I was close, I was missing a few key steps:

 if (!result.Exists("TestResultDestination", 0))
 {
       //once we have added this element do not add it again, it will overwrite the other array elements
       var newPropertyObject = sequenceContext.Engine.NewPropertyObject(PropertyValueTypes.PropValType_Container, true, string.Empty, PropertyOptions.PropOption_InsertIfMissing);
       //for my example I only need 5 elements, set the dimension of the array                                        
       newPropertyObject.SetNumElements(5, 0);
       result.SetPropertyObject("TestResultDestination", PropertyOptions.PropOption_InsertIfMissing, newPropertyObject);
       result.SetFlags(newKey, PropertyOptions.PropOption_NoOptions, PropertyFlags.PropFlags_IncludeInReport | PropertyFlags.PropFlags_IsMeasurementValue);
  }

One can then proceed to work with an element in the array by using array syntax, i.e. TestResultDestination[0] to store the actual results.