How to avoid unnecessary output from [System.Net.Dns]::GetHostAddresses("$server_name") - powershell

Question

$inventory = Import-Csv "E:\MonitoringScripts\HealthCheck\PatStat_Pshell\inventory.csv"
foreach ($line in $inventory) {
$server_name = $($line.servername)
$port_number = $($line.port)
$resolved_true = [System.Net.Dns]::GetHostAddresses("$server_name")
#Write-Host $resolved_true
if ($resolved_true) {
#Write-Host $server_name
Write-Host 'the host is resolving'
} else {
Write-Host 'Not found in DNS'
}
}
In the above code, how do I avoid the below content to appear in the command promt when there is a host in the inventory file which is not resolving the dns?
Exception calling "GetHostAddresses" with "1" argument(s): "No such host is
known"
At E:\MonitoringScripts\HealthCheck\PatStat_Pshell\patrol.ps1:9 char:2
+ $resolved_true = [System.Net.Dns]::GetHostAddresses("$server_name")
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : SocketException
Not found in DNS
the host is resolving
I just want to see:
Not found in DNS
or
the host is resolving

Answer 1

Catch the exception:
try {
[Net.Dns]::GetHostAddresses($server_name)
Write-Host 'the host is resolving'
} catch {
Write-Host 'Not found in DNS'
}

Answer 2

Read About Try Catch Finally:
Use Try, Catch, and Finally blocks to respond to or handle terminating
errors in scripts.
You can apply it as follows:
try {
$resolved_true = [System.Net.Dns]::GetHostAddresses($server_name)
} catch {
$resolved_true = $null
}

Answer 3

Test-Connection to see if the host exists first. Of course, the host existing is not exactly the same thing as finding it in DNS.
$inventory = import-csv “E:\MonitoringScripts\HealthCheck\PatStat_Pshell\inventory.csv”
ForEach ($line in $inventory)
{
$server_name = $($line.servername)
$port_number = $($line.port)
$resolved_true = $null
if (Test-Connection -ComputerName $server_name -ErrorAction SilentlyContinue) {
$resolved_true = [System.Net.Dns]::GetHostAddresses("$server_name")
}
#Write-host $resolved_true
if($resolved_true) {
#write-host $server_name
Write-Host 'the host is resolving'
} else {
Write-Host 'Not found in DNS'
}
}

Answer 4

$inventory = import-csv “E:\MonitoringScripts\HealthCheck\PatStat_Pshell\inventory.csv”
ForEach ($line in $inventory)
{
$server_name = $($line.servername)
$port_number = $($line.port)
$resolved_true = $null
try {
$resolved_true = [System.Net.Dns]::GetHostAddresses($server_name)
} catch {
$resolved_true = $null
}
#Write-host $resolved_true
if($resolved_true) {
#write-host $server_name
Write-Host 'the host is resolving'
} else {
Write-Host 'Not found in DNS'
}
}
This worked for me, Thank you so much all for the help.
I will have to mark #JosefZ Answer, But really thank you all.