[RESOLVED] Argument not specified for parameter

I'm making a console application, but I get the error shown below and I don't understand the problem.

I will be passing command-line arguments like this:
prog.exe 192.168.0.1 80 On

Code:

---

Imports System
Imports System.Text
Imports System.Net.Sockets

Module Module1

    Public Sub Main()
        Dim arguments As [String]() = Environment.GetCommandLineArgs()
        Dim ip As String
        Dim port As String

        ip = Environment.GetCommandLineArgs(1)
        port = Environment.GetCommandLineArgs(2)
        If Environment.GetCommandLineArgs(3) = "On" Then
            sendRequest("ip, port, 1") <--- underlined and says "Argument not specified for parameter 'port' of 'Private Sub sendRequest(ip As String, port As Integer, val as String)
        End If
        If Environment.GetCommandLineArgs(3) = "Off" Then
            sendRequest("ip, port, 0") <--- underline here too
        End If
    End Sub

    Private Sub sendRequest(ByVal ip As String, ByVal port As Integer, ByVal val As String)

        Dim tcpClient As New System.Net.Sockets.TcpClient()

        Try
            'Connect to device
            tcpClient.Connect(ip, port)

            If tcpClient.Connected Then ...

---

Can someone point out where I went wrong?

Sorry, I'm new, I think it's relevant that I'm using VB 2010

In this code:

vb.net Code:

sendRequest("ip, port, 1")

you have created a literal String containing the text "ip, port, 1" and you're passing that as an argument. What you actually need to do is pass those three separate values as arguments:

vb.net Code:

sendRequest(ip, port, "1")

That passes three arguments, i.e. the value of the 'ip' variable, the value of the 'port' variable and the literal string "1".

Thank you jmcilhinney, works perfectly!