return dataset in presentation layer

Hi
How can I access my getquery  function from businesslayer in my userinterface aspx.vb page so that it returns a dataset.


 Public Function getquery(ByVal parm1 As String, ByVal parm2 As String,
     Optional ByVal parm2 As Boolean = False) As DataSet

        Try
         
            getquerydata = iobj_DataAccessLayer.GetQueryDataSet(parm1, parm2 and so on )
        Finally
            If Not (iobj_DataAccessLayer) Is Nothing Then iobj_DataAccessLayer.Dispose()
        End Try
    End Function

getquery  is my function in business layer

GetQueryDataSet  is a method in dataaccess layer that returns dataset