Error Logging

How do you cause all errors to be written to a file? I have the following script:

function Create-Directory{
[String]$InputFile = [Environment]::GetFolderPath("Desktop") + "\DirectoryList.csv",
[String]$ErrorLog = [Environment]::GetFolderPath("Desktop") + "DirectoryError.txt"
Import-Csv -Path $InputFile | ForEach-Object {
    Try { New-Item -ItemType Directory -Path $_.NewPath -ErrorAction Stop }
    Catch { $_ | Out-file $ErrorLog -Append }

And the input file DirectoryList.csv looks like this:

The last entry will surly cause an error because there is no A:\ on the PC. But when I run the script by typing the function name ‘Create-Directory’, the file that is meant to trap error ‘DirectoryError.txt’ is not created.

Originally I have my script like this:

Import-Csv -Path "C:\Users\thchen\Desktop\DirectoryList.csv" | ForEach-Object {New-Item -ItemType Directory -Path $_.NewPath} -ErrorAction SilentlyContinue -ErrorVariable e | out-file C:\users\thchen\desktop\logfile.txt

The script above produced the file ‘logfile.txt’ but there is nothing inside. So, how should error be trapped and written into a file?

Thanks for any help.

I found the error and feel like a complete idiot. If I change the line
[String]$ErrorLog = [Environment]::GetFolderPath(“Desktop”) + “DirectoryError.txt”
[String]$ErrorLog = [Environment]::GetFolderPath(“Desktop”) + “\DirectoryError.txt”

Then the function works just fine. Thanks!

This work (nearly) always and you dont have to worry about the slash.
Join path wil figure that out for you.

join-path ([Environment]::GetFolderPath(“Desktop”)) “DirectoryList.csv”