Trim or replace PowerShell string variable

Question

I have a string variable that holds the following information

@{EmailAddress=test1@tenant.onmicrosoft.com},@{EmailAddress=test2@tenant.onmicrosoft.com}

I am using this variable for a cmdlet that only accepts data in the format of

test1@tenant.onmicrosoft.com, test2@tenant.onmicrosoft.com

I have tried TrimStart("@{EmailAddress=") but this only removes @{EmailAddress= for the first user and I guess TrimEnd would not be much use as I presume that it is due to the fact it reading the string as one line and not as user1,user2 etc.

Would anyone be able to provide advice on how to remove these unwanted characters.

Answer 1

A possible solution is to use Regex to extract the strings that you want, and combine them into a result:

$str = "@{EmailAddress=test1@tenant.onmicrosoft.com},@{EmailAddress=test2@tenant.onmicrosoft.com}"
$pattern = [regex]'@{EmailAddress=(.+?)}'
$result = ($pattern.Matches($str) | % {$_.groups[1].value}) -join ','

$result then is:

test1@tenant.onmicrosoft.com,test2@tenant.onmicrosoft.com

Answer 2

Another solution would be to use the -replace function. This is just a one-liner:

'@{EmailAddress=test1@tenant.onmicrosoft.com},@{EmailAddress=test2@tenant.onmicrosoft.com}' -replace '@{EmailAddress=([^}]+)}.*?', '$1'

Regex used to replace: