Combining multiple comparison methods in one IF-statement in PowerShell -

so need check if field of variable equals string.

it pretty goes this:

there multiple teams can chosen field:

• team one
• team two

depending on team is, code different stuff.

the catch however, insert of team not standardized. each member of "team one" can have team 1 written in various ways: teamone / team 1 / team one/ team1 (lets these possibilities).

in code tried check using:

if($user.active -ne 0 -and $user.team.tolower() -like "team one" -or $user.team.tolower() -like "teamone" -or $user.team.tolower() -like "team1" )     {      write-host "member in team 1"     } #else check if in team 2,.... 

my code works if use -and $user.team.tolower() -like "team one") error you cannot call method on null-valued expression

is approach i'm doing here? or there better alternative?

you cannot call method on null-valued expression

that error telling. have variable or property null , trying call method on it. if insist on using logic need test nulls first.

this specific case can avoided when understand powershell operators case-insensitive default. .tolower() not appear needed

that being said if statement looks valid, outside of first caveat, there better approaches "multiple potential match scenario" have here.

-contains

since trying make full match against 1 of many possibilies wrap in array use -contains operator on comparison

if($user.active -ne 0 -and $user.team -and "team one","teamone", "team1", "team 1" -contains $user.team){} 

$user.team evaluated truthy/falsy statement last condition wont checked if $user.team not populated or empty string

some regex

if($user.active -ne 0 -and $user.team -and $user.team -match "team\s?(one|1)"){} 

use little regex see if team 1 of following

teamone team 1 team1 team 1 

in either case above -and $user.team check not required , function without it. thought should mention if needed somewhere else verify if populated easily.