How do I sort an array of objects by one of their property values in Powershell?

Your output format suggests two things:

• The objects aren't arrays, but custom objects ([pscustomobject] instances).

• You've used the Write-Host cmdet to print these objects to the host (display), which results in the hashtable-literal-like representation shown in your question (see this answer).

  • If, instead, you want the usual rich display formatting you get by default - while still sending the output to the host only rather than to the success output stream - you can use the Out-Host cmdlet.
  • Conversely, to produce data output to the pipeline, use either the Write-Output cmdlet or, preferably, PowerShell's implicit output feature, as shown below; for more information, see this answer.

In order to sort (custom) objects by a given property, simply pass the name of that property to
Sort-Object's (positionally implied) -Property parameter, as Mathias R. Jessen helpfully suggests:

# Using $variable by itself implicitly sends its value through the pipeline.
# It is equivalent to: Write-Output $variable | ...
$variable | Sort-Object sourceDSAcn # same as: ... | Sort-Object -Property sourceDSAcn