Dataadapter with no results and datasets

I'm trying to fill a datasete with a dataadapter.

When the query I made in the dataadapter have no results

Here's the code

Dim cnChequesRech As SqlConnection
Dim daChequesRech As SqlDataAdapter
cnChequesRech = New System.Data.SqlClient.SqlConnection("Password=;User ID=sa;Initial Catalog = ChequesRechazados;Data Source=srv3")
cnChequesRech.Open()
daChequesRech = New SqlDataAdapter("SELECT * from CETBAVRC where RAIZ = '" & Raiz & "'", cnChequesRech)
daChequesRech.Fill(dsRechazados, "ListadoRechazados") --> I get the error here!, as the query come with no results
cnChequesRech.Close()

How can I detect when the dataadapter has no results in order not to fill the datasete?

Thanks!....