Powershell: Check if a file is locked
With thanks to David Brabant who posted a link to this solution under the initial question. It appears I can do this by starting off with the following function:
function Test-FileLock {
param (
[parameter(Mandatory=$true)][string]$Path
)
$oFile = New-Object System.IO.FileInfo $Path
if ((Test-Path -Path $Path) -eq $false) {
return $false
}
try {
$oStream = $oFile.Open([System.IO.FileMode]::Open, [System.IO.FileAccess]::ReadWrite, [System.IO.FileShare]::None)
if ($oStream) {
$oStream.Close()
}
return $false
} catch {
# file is locked by a process.
return $true
}
}
Then add a 'wait until' function with a timeout.
Thanks for your help!
I use this:
try { [IO.File]::OpenWrite($file).close();$true }
catch {$false}
$fileName = "C:\000\Doc1.docx"
$file = New-Object -TypeName System.IO.FileInfo -ArgumentList $fileName
$ErrorActionPreference = "SilentlyContinue"
[System.IO.FileStream] $fs = $file.OpenWrite();
if (!$?) {
$msg = "Can't open for write!"
}
else {
$fs.Dispose()
$msg = "Accessible for write!"
}
$msg