Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Winsock1.SendData(TextBox3.Text)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Winsock1.RemoteHost = TextBox2.Text
        Winsock1.Connect()
        Winsock1.Listen()
    End Sub

    Private Sub Winsock1_ConnectEvent(ByVal sender As System.Object, ByVal e As System.EventArgs)
        Dim data As String
        data = ""
        Winsock1.GetData(data)
        TextBox1.Text = TextBox1.Text + data
    End Sub

End Class