How to display data from webservice?

Hi,
 I have added a WSDL web server to my  windows application call WebService.In that service I need to pass 2 values and get the result.Here I have written in like this
NL - Country
33264 - Customer No
  private void DetailsCheck_Load(object sender, EventArgs e)
{

WebService.checkDetailsService cdat = new checkDetailsService ();
cdat.checkDetailsAsync("NL", "33264");
}
This will  return me a SOAP envelope.But I am not sure how to display that in windows form.Can any one point me out
in above code how to display the return data.
Thanks