$lines = Get-Content -Path "NPP.SmartSchedue.Api/Services/Integration/Algorithms/LinearProgrammingEngine.cs"
for ($i=0; $i -lt $lines.Length; $i++) {
    if ($lines[$i] -like '*workload_{personnel.Id}*') {
        Write-Host ($i.ToString() + ':' + $lines[$i])
    }
}