Powershell : Reprompt user for input if validation fails - powershell

Question

I have a script which takes lots of input from user. I need to validate those inputs. The issue I am currently facing is that if one of the input fails validation, the user should be prompted to re-enter only that particular input and rest all valid inputs should remain as is
Sample Code :
Function Validate
{
Param(
[Parameter(Mandatory=$true)]
[ValidateNotNullOrEmpty()]
[ValidateLength(3,5)]
[String[]]$Value
)
}
$Value = Read-Host "Please enter a value"
Validate $Value
Write-Host $value
$Test = Read-Host "Enter Another value"
Write-Host $Test
Here when validation fails for $Value it throws exception and moves to take second input.

Answer 1

You can add it directly into the parameter using ValidateScript
Function Validate
{
Param(
[Parameter(Mandatory=$true)]
[ValidateScript({
while ((Read-Host "Please enter a value") -ne "SomeValue") {
Write-Host "Incorrect value... Try again"
Read-Host "Please enter a value"
}})]
[string]
$Value
)
}

Answer 2

You might use this PowerShell Try/Catch and Retry technique to do this like:
function Get-ValidatedInput {
function Validate {
Param(
[Parameter(Mandatory=$true)]
[ValidateNotNullOrEmpty()]
[ValidateLength(3,5)]
[String]$Value
)
$Value
}
$Value = $Null
do {
Try {
$Value = Validate (Read-Host 'Please enter a value')
}
Catch {
Write-Warning 'Incorrect value entered, please reenter a value'
}
} while ($Value -isnot [String])
$Value
}
$Value = Get-ValidatedInput
$Test = Get-ValidatedInput