[WebService(Namespace="http://kennyw.com/sampleservices/")]
public class MyService : System.Web.Services.WebService
 {
[WebMethod]
public string Hello(string name)
  {
   return string.Format(“Hello {0}.”, name);

  }

}

[ServiceContract(Namespace="http://kennyw.com/WCFservices/")]
[WebService(Namespace="http://kennyw.com/sampleservices/")]
public class MyService : System.Web.Services.WebService
 {
[WebMethod]
[OperationContract]
public string Hello(string name)
   {
    return string.Format(“Hello {0}.”, name);

   }

}

namespace Foo
{
    [ServiceContract(Namespace="http://kennyw.com/WCFservices/")]
    [WebService(Namespace="http://kennyw.com/sampleservices/")]
    public class MyService : System.Web.Services.WebService
    {
        [WebMethod]
        [OperationContract]
        public string Hello(string name)
        {
            return string.Format(“Hello {0}.”, name);

        }
    }
}

<services>
    <service name="YourServiceName">
        <endpoint address="" behaviorConfiguration="httpBehavior" binding="webHttpBinding" contract="Foo.MyService"/>
    </service>
</services>