Check if Get-NetTCPConnection Object Exists

Question

I have an if statement that I am trying to figure out, basically it is

If(Get-NetTCPConnection -LocalPort 5900 -State Established) {}

The end goal is that if a connection exists on that port with the established state, do something. The issue I am running into is figuring out how to check to see if any connections with those parameters exist at all, since if none exist I get the "No Matching MSFT_NetTCPConnection objects found by CIM" error, it does not affect the execution of the script but it's an ugly error that I am trying to lint.

I have tried:

If($Null -ne (Get-NetTCPConnection -LocalPort 5900 -State Established)){}
If(-Not [String]IsNullorEmpty::((Get-NetTCPConnection -LocalPort 5900 -State Established))){}

Any help would be appreciated!

Victor Silva · Accepted Answer · 2020-06-12 14:21:20Z

4

You can use the parameter ErrorAction like this:

If(Get-NetTCPConnection -LocalPort 5900 -State Established -ErrorAction SilentlyContinue) {Write-host "Established!"}

answered Jun 12, 2020 at 14:21

Victor Silva

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2 Comments

Ivan D. Popov Over a year ago

That actually worked perfectly, the script runs as it should and no errors on receive-job, thank you!

Victor Silva Over a year ago

I think that actually exist a best approach, but this is a simple way to solve the output

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