Check returned records

[soluga]

I have a function that adds to my collection, but I dont want to add it to my collection if more than one result is returned, how can I check how many records are being returned in the dataset ??

If e.Column.Key = "productRangeCode" Then
                If _rangeCode.Length > 0 Then
                    Dim _component As New Component
                    _component.Load(_rangeCode) ' This calls my load function in my class
'I need to check here how many are returned before adding to my collection ??????
                        product.Formulation.Add(_component)
                        GridExFormula.Refetch()
                                    End If

Thanks