Date and Time format with ParseExact using Powershell

Question

I have a single ligne column (Called : Next Due Diligence Date) in my sharepoint list where i have a date with "MM-YYYY" format. I want to parse it to "01/MM/YYYY"

For this, I tried the Code below :

    $dateString =$IM["Next Due Diligence Date"]
    $format ="01/MM/YYYY"
    $start = [datetime]::parseexact($dateString, $format, $null)

I have this Error : Exception calling "ParseExact" with "3" argument(s): "String was not recognized as a valid DateTime."

Answer 1

If you are sure that $IM["Next Due Diligence Date"] contains value in "MM-YYYY" format, you could do something like this:

$dateString =$IM["Next Due Diligence Date"]
$dateStringParts = $dateString.Split('-');
$start  = New-Object DateTime([Int32]::Parse($dateStringParts[1]), [Int32]::Parse($dateStringParts[0]), 1)

and after that you could format the date with this:

$start.ToString("dd/MM/yyyy")