How do I suppress PowerShell script block errors? - powershell

Question

Below is a simple script block, the script block works. However, I would like to suppress any errors that the script block would generate.
$Name = 'TEST'
$SB = { param ($DSNName) ;
$conn = new-object system.data.odbc.odbcconnection
$conn.ConnectionString = ('DSN='+ $DSNName)
$conn.open()
$ConState = $conn.State
$conn.Close()
$ConState
}
$test = Start-job -scriptblock $SB -args $Name -RunAs32 -ErrorAction Stop | wait-job | receive-job
What I am trying to get out of this is a simple test for a 32bit ODBC connection. If the connection fails the connection state will remain closed but I also get an exception error I would like to suppress
Exception calling "Open" with "0" argument(s): "ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified"
+ CategoryInfo : NotSpecified: (:) [], MethodInvocationException
+ FullyQualifiedErrorId : OdbcException
+ PSComputerName : localhost
If I pipe to out-null my $test variable is empty. When I use a valid DSN Name everything works as desired.

Answer 1

You could use try..catch:
try {
$test = Start-job -scriptblock $SB -args $Name -RunAs32 -ErrorAction Stop | wait-job | receive-job
catch [System.Management.Automation.MethodInvocationException] {
# Do nothing here if you want to suppress the exception completely.
# Although redirecting it to a log file may be a better idea, e.g.
# $Error[0] | Out-File -FilePath "script.log"
}