Failed to add a service. Service metadata may not be accessible. Make sure your service is running and exposing metadata.

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C#

WCF

service

Hi Friends,
I am trying to Run a WCF Service, but I am getting the error

"Failed to add a service. Service metadata may not be accessible. Make sure your service is running and exposing metadata"

I have mentioned the details about my service here.
I am using Entity Data Model to bind DataTables.

Code:
Iwarservice.cs:

using System;
using System.Collections.Generic;
using System.Linq;

using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.Text;
using System.Data;

namespace WcfServiceApp
{
    public interface IWardService
    {
        [OperationContract]
        List<Gema_WardSecond> GetWard();
    }

    [DataContract]
    public class WardMaster
    {
        [DataMember]
        public int CompanyCode { get; set; }
        [DataMember]
        public int Yearcode { get; set; }
        [DataMember]
        public int Wardid { get; set; }
        [DataMember]
        public string WardName { get; set; }
        [DataMember]
        public string Remarks { get; set; }
        [DataMember]
        public int ActiveFlag { get; set; }
        [DataMember]
        public string CreatedBy { get; set; }
        [DataMember]
        public DateTime Createddate { get; set; }
        [DataMember]
        public DateTime ModifiedDate { get; set; }
    }

    [DataContract]
    public class WardMasterList
    {
        [DataMember]
        public List<WardMaster> Ward { get; set; }
    }
} ......

Wardservice.svc.cs

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 WcfServiceApp
{
    public class WardService : IWardService
    {
        public List<gema_wardsecond> GetWard()
        {
            WardConfig context = new WardConfig();
            var wardEntity = (from p
                                in context.Gema_WardSecond
                              select p).ToList();

            //if (wardEntity != null)
            //    return TranslateWardEntityToWardList(wardEntity);
            //else
            //    throw new Exception("Invalid ward id");
            return wardEntity;
        }
    }
}