.asp layers, external project access wcf service

presentation -> service -> business -> data

presentation reference -> service

service reference -> business, domain

business reference -> data, domain

run service project -> right click IIS icon -> click service address

click->service.svc

copy web address

open new empty web form solution/project in new visual studio platform(external project)

right click on solution -> add -> service reference

paste address -> go -> select service -> ok

//webform.cs

public partial class WebForm1 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            if(!IsPostBack)

            {

                var proxy = new test_service.InventoryServiceClient(); //call external service

                var suppliers = proxy.GetAll(); //consume service

                GridView1.DataSource = suppliers;

                DataBind();

            }

        }

    }

external service provide gridview