February 2019
Intermediate to advanced
626 pages
15h 51m
English
Content preview from Mastering Windows PowerShell Scripting - Third Edition
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ValidateArgumentsAttribute
Validators that inherit from ValidateArgumentsAttribute are somewhat difficult to define. The existing validators, such as ValidateNotNullOrEmpty and ValidateCount, catch most of the possible uses. Validation is more often interested in testing whether the value of parameter is an array.
Classes that inherit from ValidateArgumentsAttribute act on an argument as a single entity. If an argument is an array, the validation step applies to the array object rather than the individual elements of the array.
Classes that implement ValidateArgumentsAttribute must inherit from System.Management.Automation.ValidateArgumentsAttribute. The class must implement a Validate method that is marked as abstract in the ValidateArgumentsAttribute ...
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