Safely converting string to bool in PowerShell

Question

I\'m trying to convert an argument of my PowerShell script to a boolean value. This line

[System.Convert]::ToBoolean($a)

works fine as long

Answer 1

TryParse should work as long as you use ref and declare the variable first:

$out = $null
if ([bool]::TryParse($a, [ref]$out)) {
    # parsed to a boolean
    Write-Host "Value: $out"
} else {
    Write-Host "Input is not boolean: $a"
}