I want to add a random generated password to my newly created Active Directory User - powershell

Question

I want to add a randomly generated password to my newly created Active Directory User. I have written a function to generate the password. I am using Powershell V2.0
I tried the below but did not help.
Import-Module ActiveDirectory
[xml]$dataSource = Get-Content C:\Names1.xml
$name = Read-Host 'Please enter the table name : '
$user_logon = $dataSource.names.$name | ? { $_.Rule_Label -eq 'Regular service account (user logon)'}
$display_name = $dataSource.names.$name | ? { $_.Rule_Label -eq 'Regular service account (display name)'}
$pre_windows = $dataSource.names.$name | ? { $_.Rule_Label -eq 'Regular service account (pre-Windows 2000)'}
Function GET-Temppassword() {
Param(
[int]$length=10,
[string[]]$sourcedata
)
For ($loop=1; $loop –le $length; $loop++) {
$TempPassword+=($sourcedata | GET-RANDOM)
}
return $TempPassword
}
switch ($name)
{
DevTable{foreach($dataRecord in $dataSource)
{
try
{
$cn=$user_logon.Output_Value
$sAMAccountName=$user_logon.Output_Value
$givenName=$user_logon.Output_Value
$sn=$user_logon.Output_Value
$displayName=$display_name.Output_Value
$userPrincipalName=$sAMAccountName + “#test.com”;
$alphabet=$NULL;For ($a=65;$a –le 90;$a++) {$alphabet+=,[char][byte]$a }
$TempPassword1 = GET-Temppassword –length 10 –sourcedata $alphabet
New-ADUser $cn -SamAccountName $sAMAccountName -GivenName $givenName -Surname $sn -DisplayName $displayName -UserPrincipalName $userPrincipalName -AccountPassword $TempPassword1 -PasswordNeverExpires $true -Path "OU=Service,OU=Accounts,DC=xyz,DC=com"
set-aduser $cn -replace #{comment="xxyyzz"}
set-aduser $cn -replace #{"account"=1}
Add-ADGroupMember -Identity xyz -Member $cn
Add-ADGroupMember -Identity "Service Accounts" -Member $cn
write-host "New DevTable ADUser has been created!!!";
}
catch [Exception]
{
write-host "Error - Requested AD Service Account is already present...Please check & confirm " -foreground "red"
}
}
break;
}
default {"The table could not be determined!!!"}
}
[System.GC]::Collect()
Please have a look.Thanks.

Answer 1

This is written so that $sourceData can be a string like the following. If you really want to pass $sourcedata as an array of char remove the [char[]] cast from the function.
$sourcedata="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-$"
Function GET-Temppassword() {
Param(
[int]$length=10,
[string[]]$sourcedata
)
-join ([char[]] $sourcedata | GET-RANDOM -count $length)
}
get-temppassword $sourceData 20
GVTXxF13ibnBK5AQOu-P