Regarding the wcf data service basic authentication

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.NET4

Hi everyone goodafternoon i am new to the .net and i got work on wcf data service i am able to create the wcf data services and getting the results and now i got problem is that i have to give authentication for wcf data service and i searched in the google and i got some example but i don't how i can integrate that to my application and i got link which is explain about the basic authentication the link is http://blogs.msdn.com/b/astoriateam/archive/2010/07/21/odata-and-authentication-part-6-custom-basic-authentication.aspx[^]

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
 
namespace Wcfdataserviceconsole
{
   public class Employee
    {
        public int id { get; set; }
        public string name { get; set; }
     
       public Employee()
        {
        }
    }
        public class EmployeeDetails
        {
            public string ConnectionString = "Data Source=(local);Initial Catalog=Employee;Integrated Security=True";
            public SqlConnection Con =null;
           
            public List<Employee> Implementation()
            {
                  
                List<Employee> employee= new List<Employee>();
                Con = new SqlConnection(ConnectionString);
                Con.Open();
                string str = "select * from Employee";
                SqlCommand Cmd = new SqlCommand(str, Con);
                SqlDataReader sqlDataReader = Cmd.ExecuteReader();
                while (sqlDataReader.Read())
                {
                    Employee emp = new Employee();
                    emp.id = sqlDataReader.GetInt32(0);
                    emp.name = sqlDataReader.GetString(1);
                    employee.Add(emp);
                }
                return employee;
            }
            public IQueryable<Employee> EmployeeContext
            {
                get
                {
                    return new EmployeeDetails().Implementation().AsQueryable();
                }
            }
        }
    }

using System;
using System.Collections.Generic;
using System.Data.Services;
using System.Data.Services.Common;
using System.Linq;
using System.ServiceModel.Web;
using System.Web;

namespace WcfDataService2
{
    public class OdataCustomDataService : DataService<MyCustomDataSource>
    {
        // This method is called only once to initialize service-wide policies.
        public static void InitializeService(DataServiceConfiguration config)
        {
            // TODO: set rules to indicate which entity sets and service operations are visible, updatable, etc.
            // Examples:
             config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);
             //config.SetServiceOperationAccessRule("GetEmployeeByName", ServiceOperationRights.All);
           // config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V2;        }

so can anyone tell me how to use this to my application please......

thanks in advance