Execute Procedure via a VB.Net WebService

I'm doing a WebService to access a procedure I've done. I'm having trouble being new to the area. First I made the class with public properties that would store the values for more part pass to procedure which in turn will enter data in the bank.

There's my class

Public Class clsMaquinario

    Private _container As String
    Private _statusMaq As String
    Private _usuario As String
    Private _data As String

    Public Property Container() As String
        Get
            Return _container
        End Get
        Set(ByVal value As String)
            _container = value
        End Set
    End Property

    Public Property StatusMaq() As String
        Get
            Return _statusMaq
        End Get
        Set(ByVal value As String)
            _statusMaq = value
        End Set
    End Property

    Public Property Usario() As String
        Get
            Return _usuario
        End Get
        Set(ByVal value As String)
            _usuario = value
        End Set
    End Property

    Public Property Data() As String
        Get
            Return _data
        End Get
        Set(ByVal value As String)
            _data = value
        End Set
    End Property


End Class

I'm doing this based on another one ready. My question is the following, I put the method to access the bank and execute the procedure in the class itself? And if so, how? Because I have an example that I was given to follow only without procedure, sending the direct select to the Bank. The example is this:

Function LIB_VAZIO_EXPORTACAO_INTERNO(ByVal Container As String) As clsLibVazioExportacao

        Dim StrSql As String
        Dim libVazio As New clsLibVazioExportacao
        Dim rscmdAux As SqlClient.SqlDataReader
        Dim acessa As New AcessoDAO.Banco

        Try
            StrSql = ""
            StrSql = StrSql & "Select Cod_Armador, Nome_Armador, Conteiner, Tipo_Iso, "
            StrSql = StrSql & "Tipo, Tara, Mgw, N_Booking, N_Lacre, Cod_Porto, "
            StrSql = StrSql & "Nome_Porto, Dt_Saida, Nome_Exportador, Num_Intercambio "
            StrSql = StrSql & "from v_lib_exportacao_interno "
            StrSql = StrSql & "where Conteiner = '" & Container & "'"

            rscmdAux = acessa.RetornaDataReader(StrSql)

     ............

        Return libVazio

    End Function