Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to use the ValidateCount attribute in PowerShell Function?
The validateCount attribute in PowerShell function is to validate the length of an array, which means that you can pass the specific number of arguments into the parameter. In the below example we need array should contain a minimum 1 and maximum 4 values when we pass the values. For that, we will write the below script,
Function ValidateArray {
Param (
[ValidateCount(1,3)]
[String[]]$Animals
)
return $PSBoundParameters
}Output
PS C:\> ValidateArray -Animals Cow, Dog, Cat
Key Value
--- -----
Animals {Cow, Dog, Cat}The above output is valid but when we pass the null or 4 values, it becomes invalid because we have declared an array should have a length between 1 to 3.
PS C:\> ValidateArray -Animals @() ValidateArray: Cannot validate argument on parameter 'Animals'. The parameter req uires at least 1 value(s) and no more than 3 value(s) - 0 value(s) were provided. PS C:\> ValidateArray -Animals Cow, Dog, Cat, Tiger ValidateArray: Cannot validate argument on parameter 'Animals'. The parameter req uires at least 1 value(s) and no more than 3 value(s) - 4 value(s) were provided.
Updated on: 19-Sep-2020
278 Views
Advertisements