three different ways of splitting a comma separated string and trimming the items using PowerShell
$CSVData = @("One , Two , Three ")
#just split
$Data = $CSVData -split (",")
#first way of split and trim
$Data = $CSVData -split ',' | foreach {$_.Trim()}
#second way of split and trim
$CSVData.Split(",").Trim()
#third way of split and trim using regular expression
$Data = $CSVData -split '\s*,\s*'