Hi,
generally, if you add a service project, it will ask to add it in app_code folder, so, it did'nt asked, its fine. you just add one class file to the web application, that will create in app_code folder.
inherit that class with "Service" class and add necessary web service attributes to that like below.
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService]
public class Class1 : System.Web.Services.WebService
{
public Class1()
{
}
}
and modify the code behind and class attributes in asmx files like below.
<%@ WebService Language="C#" CodeBehind="~/App_Code/Class1.cs" Class="Class1" %>
hope it helps.