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vb.netnetwork-programmingipipv4
Ben
Ben

Reputation: 69

VB.Net Return IPv4 Address

How can I return the IPv4 address in VB.Net?

eg. 192.168.1.5

Upvotes: 1

Views: 12188

Answers (3)

magazu
magazu

Reputation: 11

Best I can do is that, will return only IPv4 address just using array functions and lambda expressions, very clean :

Public Function GetHostEntryIPv4(ByVal addr As String) As IPHostEntry

    Dim ipHostInfo As IPHostEntry = Dns.GetHostEntry(addr)

    If Not IsNothing(ipHostInfo) Then
        ipHostInfo.AddressList = Array.FindAll(ipHostInfo.AddressList, Function(n As IPAddress) n.AddressFamily = AddressFamily.InterNetwork)
    End If

    GetHostEntryIPv4 = ipHostInfo

End Function

Upvotes: 1

Codezy
Codezy

Reputation: 5570

Something like this

Public Function GetIpV4() As String

  Dim myHost As String = Dns.GetHostName
  Dim ipEntry As IPHostEntry = Dns.GetHostEntry(myHost)
  Dim ip As String = ""

  For Each tmpIpAddress As IPAddress In ipEntry.AddressList
     If tmpIpAddress.AddressFamily = Sockets.AddressFamily.InterNetwork Then
        Dim ipAddress As String = tmpIpAddress.ToString
        ip = ipAddress
        exit for
     End If
  Next

  If ip = "" Then
     Throw New Exception("No 10. IP found!")
  End If

  Return ip

End Function

Upvotes: 4

drizzt
drizzt

Reputation: 2886

Dim myClientMachineAddressList As IPHostEntry = System.Net.Dns.GetHostEntry(System.Net.Dns.GetHostName())
Dim myClientMachineIP As String = myClientMachineAddressList.AddressList(0).ToString()

edit:

then you can use IPAddress.AddressFamily to find out IP familly type.

Upvotes: 0

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