[Solved] Identify the error in this parameter validation code: function Set-Name { param( [ValidateNotNullOrEmpty()] [string]$Name ) "Name set to $Name" } Set-Name -Name $null | PowerShell

PowerShell - Scripting Best Practices

Identify the error in this parameter validation code:

function Set-Name {
  param(
    [ValidateNotNullOrEmpty()]
    [string]$Name
  )
  "Name set to $Name"
}
Set-Name -Name $null

AThe parameter type should be [int] instead of [string]

BThe function will throw a validation error because $Name is null

CThe ValidateNotNullOrEmpty attribute is used incorrectly without parameters

DThe function will accept null and print 'Name set to '

Step-by-Step Solution

Solution:

Step 1: Understand ValidateNotNullOrEmpty behavior
This attribute rejects null or empty string inputs.
Step 2: Analyze input value
The input is $null, which violates the validation rule, causing an error.
Final Answer:
The function will throw a validation error because $Name is null -> Option B
Quick Check:
Null input with ValidateNotNullOrEmpty = error [OK]

Quick Trick: Null or empty inputs fail ValidateNotNullOrEmpty [OK]

Common Mistakes:

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