Question

When I am adding the “Web Reference” we are giving the address to the asmx page to visual studio.

How Can I set this at run time?

Answer 1

Just set the Url property of the object before you call any of the service methods:

YourService service = new YourService();
service.Url = "http://some.other.url/";

// Now you're ready to call your service method
service.SomeUsefulMethod();