将设置的日期转换为一年中的日期

Question

I need to get the day of the year from a set date ie. 05/17/2017 to tell me what the day of the year was.

Something somewhat like this ( $b ) only I need it to work.

$a = Get-Date
"Day of Year: " + $a.DayOfYear
"date: " + $a

$b = "01/17/2018"
"set date: " + $b
"set day of year: " + $b.DayOfYear

Answer 1

You can do so by using either the PowerShell Cmdlet Get-Date or by parsing it using ParseExact method of DateTime .

$date = Get-Date -Date $b;

$template = 'MM/dd/yyyy'
$date = [DateTime]::ParseExact("01/17/2018", $template, $null)