title: Null result in LINQ vb.net
body: <p>Hi people :) I'm having trouble with a null result, when I compare the query it said I cant it give the following error "sequence contains no elements"</p>
  
  <pre><code>Dim existe = (
      From   p In abc.Ventadetalles 
      Where  p.idarticulo = txtArticulo.Text 
      And    p.idventa = IdventaTextBox.Text 
      Select p).Single
  </code></pre>
  
  <p>here is the code</p>