[Solved] You want to add a ScriptMethod FullName to an object $person that has properties FirstName and LastName.... Which code correctly implements this? | PowerShell

PowerShell - Working with Objects

You want to add a ScriptMethod FullName to an object $person that has properties FirstName and LastName. The method should return the full name with a space between first and last names. Which code correctly implements this?

A$person | Add-Member -MemberType ScriptMethod -Name FullName -Value { "$($this.FirstName) $($this.LastName)" }

B$person | Add-Member -MemberType ScriptProperty -Name FullName -Value { "$($this.FirstName) $($this.LastName)" }

C$person | Add-Member -MemberType ScriptMethod -Name FullName -Value { $this.FirstName + $this.LastName }

D$person | Add-Member -MemberType ScriptMethod -Name FullName -Value { return "$this.FirstName $this.LastName" }

Step-by-Step Solution

Solution:

Step 1: Confirm correct MemberType and method body
The method must be a ScriptMethod, not ScriptProperty.
Step 2: Check string concatenation and property access
$person | Add-Member -MemberType ScriptMethod -Name FullName -Value { "$($this.FirstName) $($this.LastName)" } uses string interpolation with $($this.FirstName) and $($this.LastName) separated by space, which correctly returns full name.
Step 3: Analyze other options
$person | Add-Member -MemberType ScriptMethod -Name FullName -Value { $this.FirstName + $this.LastName } concatenates without space. $person | Add-Member -MemberType ScriptMethod -Name FullName -Value { return "$this.FirstName $this.LastName" } uses return but misses $() around variables, so variables won't expand properly.
Final Answer:
$person | Add-Member -MemberType ScriptMethod -Name FullName -Value { "$($this.FirstName) $($this.LastName)" } -> Option A
Quick Check:
Use string interpolation with $() for properties [OK]

Quick Trick: Use "$($this.Prop) $($this.Prop)" for spaced string in ScriptMethod [OK]

Common Mistakes:

Using ScriptProperty instead of ScriptMethod
Concatenating strings without space
Not using $() for property expansion inside strings

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Which code correctly implements this?

Step 1: Confirm correct MemberType and method body

Step 2: Check string concatenation and property access

Step 3: Analyze other options

Final Answer:

Quick Check:

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