Q:

ASMX Web Services: Where can I see SOAP and WSDL generating by the platform

Following reference indicates ASP.NET automatically creates a WSDL and SOAP request.  Where or through what I can see the nuts and bolts? 
http://www.w3schools.com/webservices/ws_example.asp

A:

ASP.net generates the WSDL according to the method(WebMethod) signature along with other web service specific attributes. 
For example, the method name is web service operation, serialized parameter of the method is part of SOAP request and serialized return object of the method is part of SOAP response. 
Search Related topics for details,

Building XML Web Services Using
ASP.NET XML serialization

