I'm learning Visual Basic using the .Net Framework 2.0.  I have been playing
with consuming web services in applications.

I am using a free web service that gives me information for currency
conversion.  The web service I am using is:

http://www.webservicex.net/CurrencyConvertor.asmx?WSDL

It's got pretty much everything I need, but I'm running into trouble.

I want 2 comboboxes in the application.  Both of them need to contain the
names of the currencies that provide conversion factors.  The names of the
currencies are 3 letter names that are names of are ENUM constants.  

The function that provides the copnversion factor takes 2 arguments -- The
currency we're converting FROM, and the currency we're converting TO.

I'm trying to get the constant names in the dropdowns.  

Here's the code so far:

Imports CurrencyConversion.wsCurrency.CurrencyConvertor
Imports CurrencyConversion.wsCurrency.Currency
Imports System.Windows.Forms

Public Class frmMain

   Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
       Dim wsCurrencyNames As CurrencyConversion.wsCurrency.Currency

       Dim arrayCurrencyName As New ArrayList()
       'For Each wsCurrencyNames In
CurrencyConversion.wsCurrency.Currency.GetNames(GetType(wsCurrency.Currency))
       'cbxFromCurrency.Items.Add(wsCurrencyNames.ToString())
       'cbxToCurrency.Items.Add(wsCurrencyNames.ToString())
       'Next

       'cbxFromCurrency.DataSource =
System.Enum.GetNames(typeof(CurrencyConversion.wsCurrency.Currency))
   End Sub

   Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
       Dim dblRate As Double
       Dim wsConvert As New wsCurrency.CurrencyConvertor
       dblRate = wsConvert.ConversionRate(GBP, USD)
       rtbResults.Text = CStr(dblRate)
   End Sub
End Class

This line:
dblRate = wsConvert.ConversionRate(GBP, USD)

is the function that does work when values are entered directly.  But I want
the user to choose from the list.  Any ideas?