$file = [System.io.File]::Open("E:\test.txt", 'Open', 'Read', 'ReadWrite')
#$reader = New-Object System.IO.StreamReader($file)
#$text = $reader.ReadToEnd()
#$reader.Close()
$file.Close()

Write-Host $file.CanRead
Write-Host $file.CanWrite
Write-Host $file.CanSeek
Write-Host $file.CanTimeout