Catching error in Powershell and rewriting output - powershell

Question

I'm trying to craft a script to resolve a long list of domain names to IP addresses. Some of these aren't defined and I need to catch the error and just return a "blank value." In the script below, I tried doing this using a basic If/Then, but I still get a wordy error (at the bottom) rather than just a blank value. Any ideas how to get around this? I really appreciate it!
----- SCRIPT -----
$names = Get-Content C:\temp\names.txt
ForEach ($name in $names) {
$ipAddress = [System.Net.Dns]::GetHostAddresses("$name")[0].IPAddressToString;
if ($ipAddress) {
Write-Host $name"-"$ipAddress
}
else {
Write-Host $name"-"
}
}
---- OUTPUT/ERROR ----
mydomain.com-1.2.3.4
yourdomain.com-4.3.2.1
Exception calling "GetHostAddresses" with "1" argument(s): "The requested name is valid, but no data of the requested type was found"
anotherdomain.com-5.5.5.5
---- What I'd Like to See -----
mydomain.com-1.2.3.4
yourdomain.com-4.3.2.1
NOTDEFINEDDOMAIN.tld-
anotherdomain.com-5.5.5.5
---- HERE'S THE SOLUTION THAT WORKED - THANK YOU!----
$names = Get-Content C:\temp\names.txt
ForEach ($name in $names) {
Try {
$ipAddress = [System.Net.Dns]::GetHostAddresses("$name")[0].IPAddressToString;
Write-Host $name"-"$ipAddress
}
Catch {
Write-Host $name"-"
}
}

Answer 1

Update of answer:
Catching error in Powershell and rewriting output
I need to catch the error and just return a "blank value
Use try/catch:
$names = Get-Content C:\temp\names.txt
ForEach ($name in $names)
{
try
{
$ipAddress = [System.Net.Dns]::GetHostAddresses("$name")[0].IPAddressToString;
Write-Host $name"-"$ipAddress
}
catch
{
Write-Host $name"-"
$_.Exception.Message # <- Check this to read and rewrite exception message
}
}
---- What I'd Like to See -----
If you want - you can manipulate of exception message like as string - this is line to get message in catch block:
$_.Exception.Message
Other way to get info about errors is $Error variable (it's the array/list of errors)...
More information:
http://vwiki.co.uk/Exceptions_and_Error_Handling_(PowerShell)
PowerShell Tutorial – Try Catch Finally and error handling in PowerShell
Using PowerShell $Error variable
about_Try_Catch_Finally
Update 2:
I forgot about one thing - try/catch working only with terminating errors.
I'm not sure about type of error in your case (because can't reproduce it), however sometimes you may want to add to your command:
-Error Stop