How to enable Internet Connection Sharing via a script?

Question

I have two NIC ports [port1 & port2] and want to enable Internet Connection Sharing on port1 through either C# or batch script:

• I have only been able to find how to start the ICS service, not to enable the option:
  

Answer 1

On earlier OS versions, netsh routing could be used, but this no longer works in Win7.

• Have a look at this Powershell snip, otherwise StackOverflow likely has a C# example:

  # Register the HNetCfg library (once)
    RegSvr32 "hnetcfg.dll"
  Create a NetSharingManager object
  $m = New-Object -ComObject HNetCfg.HNetShare
  List connections
  $m.EnumEveryConnection |% { $m.NetConnectionProps.Invoke($_) }
  Find connection
  $c = $m.EnumEveryConnection |? { $m.NetConnectionProps.Invoke($_).Name -eq "Ethernet" }
  Get sharing configuration
  $config = $m.INetSharingConfigurationForINetConnection.Invoke($c)
  See if sharing is enabled
  Write-Output $config.SharingEnabled
  See the role of connection in sharing, only meaningful if SharingEnabled is True
  0: Public || 1: Private
  Write-Output $config.SharingType
  Enable sharing
  0: Public || 1: Private
  $config.EnableSharing(0)
  Disable sharing
  $config.DisableSharing()
  

• How to enable Internet Connection Sharing using command line?