Powershell Select Expanded Property and Custom Expression - powershell

Question

I want to get the content of the first value of a specific column using Import-Csv output as a table alongside the name of the file.
I can do:
$File = '\\webserver\Data_20190626.csv'
Import-Csv -Path $File -Delimiter ',' | select 'Effective Date' -First 1
Which gives me my expected output:
Effective Date
--------------
25-May-2019
What I want to see is:
Effective Date FileName
-------------- ---------
25-May-2019 Data_20190626.csv
I have tried this:
$File = '\\webserver\Data_20190626.csv'
Import-Csv -Path $File -Delimiter ',' | select 'Effective Date', #{N='FileName';E={$_.Name}} -First 1
Which resulted in:
Effective Date FileName
-------------- ---------
25-May-2019
How should I proceed?

Answer 1

You can achieve this with Select-Object's property hash table and splitting the file path by \ with the .Split() method. The [-1] indicates the last item in the split result.
$File = '\\webserver\Data_20190626.csv'
Import-Csv -Path $File |
Select-Object 'Effective Date',#{n='FileName';e={$File.Split('\')[-1]}} -First 1

Answer 2

I'm surprised there's no PSPath or anything.
import-csv $file -delimiter ',' |
select 'Effective Date', #{n='Filename';e={split-path -leaf $file}} -first 1

Answer 3

this is a slightly different way to do things. [grin] the #region >>> create a file to work with section can be ignored - it is there to provide the data file you didn't provide.
it gets the EffectiveDate info by using the way that PoSh can dot-address one property of an entire collection and then grabbing the 1st item from the resulting array.
it also avoids the often confusing side effects of allowing spaces or other special chacters in property names by using EffectiveDate instead of Effective Date. if you need to keep using the poorly thot out embedded space, then change that string as needed.
$File = "$env:TEMP\Data_20190626.csv"
#region >>> create a file to work with
#'
EffectiveDate
2019-06-25
2006-06-06
2005-05-05
'# |
ConvertFrom-Csv |
Export-Csv -LiteralPath $File -NoTypeInformation
#endregion >>> create a file to work with
$Results = [PSCustomObject]#{
EffectiveDate = (Import-Csv -LiteralPath $File).EffectiveDate[0]
FileName = $File
}
$Results
output ...
EffectiveDate FileName
------------- --------
2019-06-25 C:\Temp\Data_20190626.csv