Calling a web service from a page

A client page does not need to know how a service is built. It needs the service address and a reference to its methods.

Add the reference, then call

var service = new ProductService();
DataTable table = service.GetProducts("tools");

productsGrid.DataSource = table;
productsGrid.DataBind();

The steps

1. Add a reference to the service so the client can see its methods.
2. Create an instance of the generated proxy class.
3. Call the method and bind the result.

When the service itself changes, the client must be refreshed. That is updating a client when the service changes.