[Solved] You wrote this parameter declaration:param( [Parameter(Mandatory=$true)] [ValidateSet('Small','Medium','Large')] [string]$Size )But when running the script without the -Size argument, it does not... | PowerShell

PowerShell - Functions

You wrote this parameter declaration:

param(
  [Parameter(Mandatory=$true)]
  [ValidateSet('Small','Medium','Large')]
  [string]$Size
)

But when running the script without the -Size argument, it does not prompt for input and continues silently. What is the likely cause?

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

BThe script is missing <code>CmdletBinding()</code> to enable parameter validation.

CMandatory parameters never prompt for input automatically.

DThe ValidateSet attribute is incorrect and disables Mandatory.

Step-by-Step Solution

Solution:

Step 1: Understand Mandatory prompt behavior
Mandatory parameters prompt for input only if the function or script uses CmdletBinding() or is an advanced function.
Step 2: Identify missing CmdletBinding()
Without CmdletBinding(), the script treats parameters as simple variables and does not enforce Mandatory prompts.
Final Answer:
The script is missing CmdletBinding() to enable parameter validation. -> Option B
Quick Check:
CmdletBinding() enables Mandatory prompts [OK]

Quick Trick: Add CmdletBinding() to enable Mandatory prompts [OK]

Common Mistakes:

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