how to set up a case statement to take multiple values in teststand

[mcfrenzy36]

I am using a select with multiple case statements.  I am using one of the case statements to be used for multiple expression results.  Specifically, the expression is a string and I want the same case to operate for values "1" and "4", but I can not find the syntax for this, does anyone know it?

[RayFarmer]

Does the example UsingFlowControlSteps.seq in the TestStand Examples\SequenceFlow help in any way

[mcfrenzy36]

Not really.  I am wanting to know how I could make the same case sequence occur if either "1" or "2" was the expression.  I am looking to reduce code rewriting for the same result that comes from multiple expressions.

[RayFarmer]

Hi,

try this example.

[jm169896]

I think you just need to put your values into an array like this...

{"1","2"}

[ryk]

In your question you include two string representations of numbers:  "1" and "4".  In addition to discrete numeric, character and logical expressions, the TestStand case statement also allows for arrays of either strings or numbers to be used when a single case needs to match more than one expression result.  Syntax for these arrays is:

    case {expression_1, expression_2,...,expression_n}  //matches any of the expressions contained in {...}

Where expression can be a numeric value or a string value. 

    case {"string_1", "string_2"}

and

    case {1,2,3,4,5,6,7,8}

are both legal case arrays

There is no limit on the number of expressions.

Note, unlike some extensions of the C switch:case statement, case ranges such as 5:20 (matching any value from 5 to 20) are not legal.  case arrays can only contain a number of discrete expressions

An example showing a numeric array can be seen in the PromptForInput sub-sequence on the second case statement <teststand directory>\Examples\Built-In Step Types\Message Popup Step Type\Message Popup Step Type - Get User Input.seq

(C:\Users\Public\Documents\National Instruments\TestStand YYYY (32-bit) is a typical path for <teststand directory>)

[alexak]

I tried entering an array of numbers, but it gave an error that it could not compare an array of numbers to the selection, which was a single integer.