Compare Get-Date to Date as String

Question

The registry contains a key, with a string value much like:

23-01-2015 14-58-00

Using PowerShell I need to compare this date to ensure it is gr

Answer 1

You'll want to use ParseExact:

[datetime]::ParseExact("23-01-2015 14-58-00","dd-MM-yyyy HH-mm-ss",$null)

Friday, January 23, 2015 2:58:00 PM

This outputs a DateTime object. "dd-MM-yyyy HH-mm-ss" is a specific mapping to your required DateTime format, using DateTime format placeholders for year, month, day, etc. If I didn't assume the correct format placeholders, just click that link above to find the ones you intended.

Afterwards, you can compare the two DateTime objects as you expected:

$myDate = [datetime]::ParseExact("23-01-2015 14-58-00","dd-MM-yyyy HH-mm-ss",$null)
$myDate -gt (Get-Date).AddDays(-1)
True