Create firewall rule to open port per application programmatically in c#

I need to open specific port for my application.

I have tried using INetFwAuthorizedApplication rule per application for all ports.

fwMgr.LocalPolicy.CurrentProfile.AuthorizedApplications.Add(app)

Alternatively open one port for all appllications using INetFwOpenPort.

firewallManager.LocalPolicy.CurrentProfile.GloballyOpenPorts.Add(port)

Is there any way to programmatically open only single port per application programmatically? I can do it manually through firewall settings.