You want to stop a script if a variable $filePath is empty or null, showing the message "File path is required". Which code snippet correctly uses throw to do this?

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PowerShell - Error Handling

You want to stop a script if a variable $filePath is empty or null, showing the message "File path is required". Which code snippet correctly uses throw to do this?

Aif (-not $filePath) { throw 'File path is required' }

Bif ($filePath -eq $null) throw File path is required

Cthrow 'File path is required' if ($filePath -eq '')

Dif ($filePath) { throw 'File path is required' }

Step-by-Step Solution

Solution:

Step 1: Check condition for empty or null variable
Using -not $filePath correctly checks if $filePath is null, empty, or false.
Step 2: Verify throw syntax and condition placement
if (-not $filePath) { throw 'File path is required' } uses correct if statement and throw with quoted message. if ($filePath -eq $null) throw File path is required misses quotes and may cause syntax error. throw 'File path is required' if ($filePath -eq '') has wrong syntax order. if ($filePath) { throw 'File path is required' } throws when $filePath exists, which is wrong.
Final Answer:
if (-not $filePath) { throw 'File path is required' } -> Option A
Quick Check:
Use if (-not var) { throw 'msg' } = B [OK]

Quick Trick: Use if (-not $var) { throw 'msg' } to check empty/null [OK]

Common Mistakes:

Forgetting quotes around error message
Using throw before if condition
Throwing error when variable is set

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You want to stop a script if a variable $filePath is empty or null, showing the message "File path is required". Which code snippet correctly uses throw to do this?

Step 1: Check condition for empty or null variable

Step 2: Verify throw syntax and condition placement

Final Answer:

Quick Check:

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