How to exclude non-valued object properties when converting to JSON in Powershell

Question

I have a piece of code that works but I want to know if there is a better way to do it. I could not find anything related so far. Here are the facts:

• I have an

Answer 1

beatcracker's helpful answer offers an effective solution; let me complement it with a streamlined version that takes advantage of PSv4+ features:

# Sample input object
$object = [pscustomobject] @{
  TableName = 'MyTable'
  Description = 'Lorem ipsum dolor...'
  AppArea = 'UserMgmt'
  InitialVersionCode = $null
}

# Start with the list of candidate properties.
# For simplicity we target *all* properties of input object $obj
# but you could start with an explicit list as wellL
#   $candidateProps = 'TableName', 'Description', 'AppArea', 'InitialVersionCode'
$candidateProps = $object.psobject.properties.Name

# Create the filtered list of those properties whose value is non-$null
# The .Where() method is a PSv4+ feature.
$nonNullProps = $candidateProps.Where({ $null -ne $object.$_ })

# Extract the list of non-null properties directly from the input object
# and convert to JSON.
$object | Select-Object $nonNullProps | ConvertTo-Json