February 2019
Intermediate to advanced
626 pages
15h 51m
English
Content preview from Mastering Windows PowerShell Scripting - Third Edition
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The ValidateNotNullOrEmpty attribute
ValidateNotNullOrEmpty extends ValidateNotNull to disallow empty arrays and empty strings:
function Test-ValidateNotNullOrEmpty { [CmdletBinding()] param ( [ValidateNotNullOrEmpty()] [String]$Parameter1, [ValidateNotNullOrEmpty()] [Object[]]$Parameter2 )}
An error will be thrown if either an empty string is supplied for Parameter1, or an empty array is supplied for Parameter2. Like ValidateNotNull, ValidateNotNullOrEmpty has no effect on numeric types.
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