Disconnecting a TCPlistener

I am using the following code from the msdn library to establish TCP connections as a server. Would someone be so kind as to throw me a clue on how to modify it to keep track of the listener connections and make any individual connection close(kick off) (for example on button click of textbox value )?








Imports System.Threading
Imports System.Net
Imports System.Net.Sockets

Public Delegate Sub StatusInvoker(ByVal t As String)

Public Class Form1
Inherits System.Windows.Forms.Form

Private mobjThread As Thread
Private mobjListener As TcpListener
Private mcolClients As New Hashtable()




Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
mobjThread = New Thread(AddressOf DoListen)
mobjThread.Start()
UpdateStatus("Listener started")
End Sub

Private Sub DoListen()

Try
mobjListener = New TcpListener(5000)


mobjListener.Start()
Do
'Dim x As New Client(mobjListener.AcceptSocket)
Dim x As New Client(mobjListener.AcceptTcpClient)

AddHandler x.Connected, AddressOf OnConnected
AddHandler x.Disconnected, AddressOf OnDisconnected
'AddHandler x.CharsReceived, AddressOf OnCharsReceived
AddHandler x.LineReceived, AddressOf OnLineReceived
mcolClients.Add(x.ID, x)
Dim params() As Object = {"New connection"}
Me.Invoke(New StatusInvoker(AddressOf Me.UpdateStatus), params)

Loop Until False

Catch

End Try
End Sub

Private Sub OnConnected(ByVal sender As Client)
UpdateStatus("Connected")
End Sub

Private Sub OnDisconnected(ByVal sender As Client)
UpdateStatus("Disconnected")
mcolClients.Remove(sender.ID)
End Sub

'Private Sub OnCharsReceived(ByVal sender As Client, ByVal Data As String)
' UpdateStatus("Chars:" & Data)
'End Sub

Private Sub OnLineReceived(ByVal sender As Client, ByVal Data As String)
UpdateStatus("Line:" & Data)

'Dim objClient As Client
'Dim d As DictionaryEntry

'For Each d In mcolClients
' objClient = d.Value
'objClient.Send(Data & vbCrLf)
'Next
End Sub

Private Sub UpdateStatus(ByVal t As String)
lstStatus.Items.Add(t)
lstStatus.SetSelected(lstStatus.Items.Count - 1, True)
End Sub

Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
mobjListener.Stop()
End Sub

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Dim tempstring As String
Dim filenum As Integer
filenum = FreeFile()
FileOpen(filenum, "C:\halcyon\system2.txt", OpenMode.Input)
While Not EOF(filenum)
tempstring = LineInput(filenum)
End While
FileClose(filenum)
TextBox1.Text = tempstring
End Sub

Private Sub TextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
lstStatus.Items.Add(TextBox1.Text)
lstStatus.SetSelected(lstStatus.Items.Count - 1, True)
Dim d As DictionaryEntry
Dim objClient As Client
Dim tempstring As String

tempstring = TextBox1.Text & vbCrLf
For Each d In mcolClients
objClient = d.Value
objClient.Send(tempstring)
Next
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click




End Sub
End Class