Write object records to a CSV file.
PowerShell: Export-Csv uses property names as headers and quotes values when needed.
$ErrorActionPreference = 'Stop'
Set-StrictMode -Version Latest
$rows = @([pscustomobject]@{Name='Ada';Score=98},[pscustomobject]@{Name='Grace';Score=95})
$rows | Export-Csv -LiteralPath 'scores.csv' -NoTypeInformation -Encoding utf8
Import-Csv -LiteralPath 'scores.csv' | ForEach-Object { '{0}:{1}' -f $_.Name,$_.Score }Expected output EXAMPLE
Ada:98 Grace:95
Details
Requires PowerShell 7. Save as snippet.ps1 and run pwsh -NoProfile -File snippet.ps1. Tested on Linux; these examples use portable paths and cmdlets. Export-Csv uses property names as headers and quotes values when needed.
Tested on Ubuntu 24.04.5 LTS · · PowerShell 7.6.6 · powershell 7.6.6-1.deb
Test inputs, results and environment
The exact published code ran in a dedicated Linux test container with prepared inputs. Snippet process uid 65534 with a read-only root filesystem and temporary working files. Networking disabled. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.
- Architecture / host kernel
- x86_64 / 6.18.54.1-microsoft-standard-WSL2
- Snippet identity / locale
- uid=65534, gid=65534 (unprivileged process) / C.UTF-8
- Interpreter invocation
pwsh -NoLogo -NoProfile -NonInteractive -File snippet.ps1- Container image ID
sha256:ec91410a8f6ec3e985830b5e3a0560306d36f8c1c5ccd91a6699abe707123fa3- Code SHA-256
bbf01676983710108006ffed0bed522f310648a6da09c47c86689699d2aec911- Dependencies
- powershell 7.6.6-1.deb
Test input setup
These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.
# No input files required.
Observed standard output
Ada:98 Grace:95
Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.
Additional assertions that passed
Checks recorded by the test harness. Where Python assertions are shown, browser cases use Playwright and simulator cases may inspect pin transitions: result.stdout is captured output, work is the temporary directory, and Path is pathlib.Path. The harness also imports json and csv.
assert list(csv.DictReader(Path('scores.csv').open())) == [{'Name':'Ada','Score':'98'},{'Name':'Grace','Score':'95'}]