Call a webservice method dynamically

[tal_mcmahon]

Hello all,
I have a webservice that I would like to coll some of its methods dynamically.

I am using the following code:

 Public Function getit(ByVal dictionaryname As String) As DataSet
        Dim methodname As String = dictionaryname + "DictionariesGet"
        Dim myds As DataSet
        Dim t As Type = GetType(ws.Rex)
        myds.Merge(t.InvokeMember(methodname, BindingFlags.DeclaredOnly Or BindingFlags.Public Or BindingFlags.NonPublic Or BindingFlags.Instance Or BindingFlags.GetProperty, Nothing, Nothing, Nothing))
        Return myds
    End Function

I am getting a Missing member error but the member does exists. Can I do this or should I just code a long case statement and save the trouble.

Tal