On earlier OS, we had a batch method netsh routing but this no longer works in W7. Have a look at this powershell snip and see if it can help. Otherwise, I bet somewhere at stackoverflow is 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
# 0 - public, 1 - private
# Only meaningful if SharingEnabled is True
Write-Output $config.SharingType

# Enable sharing (0 - public, 1 - private)
$config.EnableSharing(0)

# Disable sharing
$config.DisableSharing()

http://earthwithsun.com/questions/470319/how-to-enable-internet-connection-sharing-using-command-line

How to enable Internet Connection Sharing using command line?

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?

On earlier OS, we had a batch method netsh routing but this no longer works in W7. Have a look at this powershell snip and see if it can help. Otherwise, I bet somewhere at stackoverflow is 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
# 0 - public, 1 - private
# Only meaningful if SharingEnabled is True
Write-Output $config.SharingType

# Enable sharing (0 - public, 1 - private)
$config.EnableSharing(0)

# Disable sharing
$config.DisableSharing()

http://earthwithsun.com/questions/470319/how-to-enable-internet-connection-sharing-using-command-line

How to enable Internet Connection Sharing using command line?

On earlier OS, we had a batch method netsh routing but this no longer works in W7. Have a look at this powershell snip and see if it can help. Otherwise, I bet somewhere at stackoverflow is 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
# 0 - public, 1 - private
# Only meaningful if SharingEnabled is True
Write-Output $config.SharingType

# Enable sharing (0 - public, 1 - private)
$config.EnableSharing(0)

# Disable sharing
$config.DisableSharing()

http://earthwithsun.com/questions/470319/how-to-enable-internet-connection-sharing-using-command-line

How to enable Internet Connection Sharing using command line?