POWERSHELL extract email and use it [duplicate] - powershell

Question

In PowerShell, how do you get an object's property value by specifying its name (a string)? I want something like the following:
$obj = get-something
# View the object's members:
$obj | gm
# I could retrieve a property by doing so:
write-host $obj.SomeProp
# But for many purposes, I would really want to:
write-host $obj | Get-PropertyByName "SomeProp"
Is there something similar to "Get-PropertyByName" in PowerShell?

Answer 1

Sure
write-host ($obj | Select -ExpandProperty "SomeProp")
Or for that matter:
$obj."SomeProp"

Answer 2

Expanding upon #aquinas:
Get-something | select -ExpandProperty PropertyName
or
Get-something | select -expand PropertyName
or
Get-something | select -exp PropertyName
I made these suggestions for those that might just be looking for a single-line command to obtain some piece of information and wanted to include a real-world example.
In managing Office 365 via PowerShell, here was an example I used to obtain all of the users/groups that had been added to the "BookInPolicy" list:
Get-CalendarProcessing conferenceroom#example.com | Select -expand BookInPolicy
Just using "Select BookInPolicy" was cutting off several members, so thank you for this information!

Answer 3

You can get a property by name using the Select-Object cmdlet and specifying the property name(s) that you're interested in. Note that this doesn't simply return the raw value for that property; instead you get something that still behaves like an object.
[PS]> $property = (Get-Process)[0] | Select-Object -Property Name
[PS]> $property
Name
----
armsvc
[PS]> $property.GetType().FullName
System.Management.Automation.PSCustomObject
In order to use the value for that property, you will still need to identify which property you are after, even if there is only one property:
[PS]> $property.Name
armsvc
[PS]> $property -eq "armsvc"
False
[PS]> $property.Name -eq "armsvc"
True
[PS]> $property.Name.GetType().FullName
System.String
As per other answers here, if you want to use a single property within a string, you need to evaluate the expression (put brackets around it) and prefix with a dollar sign ($) to declare the expression dynamically as a variable to be inserted into the string:
[PS]> "The first process in the list is: $($property.Name)"
The first process in the list is: armsvc
Quite correctly, others have answered this question by recommending the -ExpandProperty parameter for the Select-Object cmdlet. This bypasses some of the headache by returning the value of the property specified, but you will want to use different approaches in different scenarios.
-ExpandProperty <String>
Specifies a property to select, and indicates that an attempt should
be made to expand that property
https://technet.microsoft.com/en-us/library/hh849895.aspx
[PS]> (Get-Process)[0] | Select-Object -ExpandProperty Name
armsvc
powershell variables

Answer 4

Try this :
$obj = #{
SomeProp = "Hello"
}
Write-Host "Property Value is $($obj."SomeProp")"

Answer 5

Here is an alternative way to get an object's property value:
write-host $(get-something).SomeProp

Answer 6

$com1 = new-object PSobject #Task1
$com2 = new-object PSobject #Task1
$com3 = new-object PSobject #Task1
$com1 | add-member noteproperty -name user -value jindpal #Task2
$com1 | add-member noteproperty -name code -value IT01 #Task2
$com1 | add-member scriptmethod ver {[system.Environment]::oSVersion.Version} #Task3
$com2 | add-member noteproperty -name user -value singh #Task2
$com2 | add-member noteproperty -name code -value IT02 #Task2
$com2 | add-member scriptmethod ver {[system.Environment]::oSVersion.Version} #Task3
$com3 | add-member noteproperty -name user -value dhanoa #Task2
$com3 | add-member noteproperty -name code -value IT03 #Task2
$com3 | add-member scriptmethod ver {[system.Environment]::oSVersion.Version} #Task3
$arr += $com1, $com2, $com3 #Task4
write-host "windows version of computer1 is: "$com1.ver() #Task3
write-host "user name of computer1 is: "$com1.user #Task6
write-host "code of computer1 is: "$com1,code #Task5
write-host "windows version of computer2 is: "$com2.ver() #Task3
write-host "user name of computer2 is: "$com2.user #Task6
write-host "windows version of computer3 is: "$com3.ver() #Task3
write-host "user name of computer3 is: "$com1.user #Task6
write-host "code of computer3 is: "$com3,code #Task5
read-host