Split with string in Powershell

Question

I have a problem with a quick function I wrote for splitting Sharepoint specific ids ({id};#{name}):

function GetOnlyValue {
param( 
[string] $fullValue
)
if(![string]::IsNullOrEmpty($fullValue))
{
 # On regarde si on a la valeur
 if($fullValue -Like "*;#*")
 {
 $array = $fullValue -split ";#", 2, "simplematch"
 return $array[-1]
 }
}
return $fullValue
}

But this function does half the job because, for instance, when I pass a value formated like that : myId;#myName the function return me this value: "#myName" instead of "myName".

Thanks for your help !

06/02/2016 EDIT: This function is included in a module that I import in a script. I use it in correlation with a Sharepoint 2013 site, browsing each SPListItem of a SPList:

$formation = GetOnlyValue -fullValue $spItem["Formation"]

• Joey: Cannot reproduce here. 'myId;#myName' -split ';#',2,'simplematch' works as expected.
• GwenGuts: I used simple and double quotes, I've always the same result :/
• Martin Brandl: try to output $spItem["Formation"] and ensure its a string
• GwenGuts: Hi, so it works now, by ensuring the data is a string -__- : GetOnlyValue -fullValue ([string]$item["Formation"]) Thanks to all for your help !

Answer 1

I'd use a regex with capture groups:

function GetOnlyValue
{
 Param
 ( 
 [string]$fullValue
 )
 if($fullValue -match '(.*);#(.*)'){
 $Matches[2]
 }
}

• Joey: Not really a reason for that; their code should work fine. Not everything needs to be bashed at with regexes, especially if the code is not broken to begin with.
• beatcracker: @Joey Yep, so it's up to OP to decide. I'm merely suggesting.
• GwenGuts: Nope, even with the regex, I have the problem

Answer 2

I can't reproduce your problem, but you can simplify your script using a -replace:

function GetOnlyValue {
 param( 
 [string] $fullValue
 )
 $fullValue -replace '^.*#'
}

• GwenGuts: Again, it cut at the ';' but not at the ';#' group.Thanks anyway !
• GwenGuts: For instance: 457;#FirstName LastName - Organization. I have in output: #FirstName LastName - Organization
• Martin Brandl: I have in output FirstName LastName - Organization.
• Joey: Note that your code is not identical to what they have in their question. For a string containing two # yours would remove everything up to the second, whilst theirs would split at the first.
• Martin Brandl: yes, to fix that he had to make the dot non greedy (`^.*?#')