Via the secret “PSObject” property, you can get detailed information about object members. For example, if you’d like to know which object properties can actually be changed, try this:
# get any object $object = Get-Process -Id $pid # try and access the PSObject $object.PSObject.Properties.Where{$_.IsSettable}.Name
The result is a list of properties in Process objects that can be assigned new values:
MaxWorkingSet MinWorkingSet PriorityBoostEnabled PriorityClass ProcessorAffinity StartInfo SynchronizingObject EnableRaisingEvents Site
Likewise, you can easily figure out all properties that currently have no value (are empty):
# get any object $object = Get-Process -Id $pid # try and access the PSObject $object.PSObject.Properties.Where{$null -eq $_.Value}.Name
