Pristup web servisu iz .net - problem.....

Gde grešim.....?


Dim provera As New WebService
Dim a As New WebService.zahtev
Dim b As WebService.odgovor


a= TextBox1.Text

provera.Credentials = New System.Net.NetworkCredential("username", "pass", "")


provera.PreAuthenticate = True


b= provera.vrati(a)


Prijavljuje grešku

Security Requirements not met - No Security header in message

Molim za pomoć......

Poz..

Rešio sam....