How to retrieve this computer's IP address?

Question

What is the least cumbersome (module-inclusion, code lenght, etc) way to retrieve the machine IP address (of the first interface open)? I know of some solutions using MSINET, but I believe we can do better. Don't reply

Function HomeIP() as Atring
HomeIP= "127.0.0.1"
End Function

because it's not that funny... or correct. The scenario is a question wiht a document ID feature I'm trying to build a reply for.

Answer 1

Here's an adapted example from Technet:

Function GetIPAddress()
    Const strComputer As String = "."   ' Computer name. Dot means local computer
    Dim objWMIService, IPConfigSet, IPConfig, IPAddress, i
    Dim strIPAddress As String

    ' Connect to the WMI service
    Set objWMIService = GetObject("winmgmts:" _
        & "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")

    ' Get all TCP/IP-enabled network adapters
    Set IPConfigSet = objWMIService.ExecQuery _
        ("Select * from Win32_NetworkAdapterConfiguration Where IPEnabled=TRUE")

    ' Get all IP addresses associated with these adapters
    For Each IPConfig In IPConfigSet
        IPAddress = IPConfig.IPAddress
        If Not IsNull(IPAddress) Then
            strIPAddress = strIPAddress & Join(IPAddress, ", ")
        End If
    Next

    GetIPAddress = strIPAddress
End Function

It requires that you have Microsoft WMI Scripting Library in the project's references.