How can you test if an object has a specific property?

Question

How can you test if an object has a specific property?

Appreciate I can do ...

$members = Get-Member -InputObject $myobject 

and th

Answer 1

Just to clarify given the following object

$Object

With the following properties

type        : message
user        : john.doe@company.com
text        : 
ts          : 11/21/2016 8:59:30 PM

The following are true

$Object.text -eq $NULL
$Object.NotPresent -eq $NULL

-not $Object.text
-not $Object.NotPresent

So the earlier answers that explicitly check for the property by name is the most correct way to verify that that property is not present.