The underlying connection was closed: The connection was closed unexpectedly.

protected void Page_Load(object sender, EventArgs e)
       {
           try
           {
               AnnetInterviewQ.IQServiceClient obj = new AnnetInterviewQ.IQServiceClient();


               reptInterviewQ.DataSource = obj.GetInterviewQ(2);
               reptInterviewQ.DataBind();
           }
           catch (Exception ex)
           {
               throw ex;
           }



       }

<asp:Repeater ID="reptInterviewQ" runat="server" >
           
            <ItemTemplate>
             
               <%#Eval("IQId")%>
            </ItemTemplate>
            <ItemTemplate>
               
                <%#Eval("IQ")%>
            </ItemTemplate>
            <ItemTemplate>
                <asp:Repeater ID="reptInterviewOp" runat="server">
                    <ItemTemplate>
                        <%#Eval("IQOP")%>
                       
                    </ItemTemplate>
                </asp:Repeater>
            </ItemTemplate>
        </asp:Repeater> 

<system.serviceModel>
        <bindings>
            <basicHttpBinding>
                <binding name="BasicHttpBinding_IIQService" closeTimeout="00:01:00"
                    openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
                    allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard"
                    maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
                    messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered"
                    useDefaultWebProxy="true">
                    <readerQuotas maxDepth="64" maxStringContentLength="2147483647" maxArrayLength="2147483647"
                        maxBytesPerRead="4096" maxNameTableCharCount="16384" />
                    <security mode="None">
                        <transport clientCredentialType="None" proxyCredentialType="None"
                            realm="" />
                        <message clientCredentialType="UserName" algorithmSuite="Default" />
                    </security>
                </binding>
            </basicHttpBinding>
        </bindings>
      <behaviors>
        <endpointBehaviors>
          <behavior name="debuggingBehaviour">
            <dataContractSerializer maxItemsInObjectGraph="2147483646"/>
          </behavior>
          
        </endpointBehaviors>
        
      </behaviors>
        <client>
            <endpoint address="http://localhost:2431/AnnetInterviewService.svc"
                binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IIQService"
                contract="AnnetInterviewQ.IIQService" name="BasicHttpBinding_IIQService" />
        </client>

public List<t_InterviewQ> GetInterviewQ(int yearsExprience)
       {
           InterViewQDataContext obj = new InterViewQDataContext();


           var objIQList= from l in obj.GetTable<t_InterviewQ>()
                          where l.yearsofExpr==yearsExprience
                          select l;

           return objIQList.ToList<t_InterviewQ>();

       }

 <connectionStrings>
   <add name="TestConnectionString" connectionString="Data Source=Myserver;Initial Catalog=Test;Integrated Security=True"
     providerName="System.Data.SqlClient" />
 </connectionStrings>
 <system.web>
   <compilation debug="true" targetFramework="4.0" />
 </system.web>
 <system.serviceModel>
   <behaviors>
     <serviceBehaviors>
       <behavior>
         <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
         <serviceMetadata httpGetEnabled="true"/>
         <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
         <serviceDebug includeExceptionDetailInFaults="true"/>
         <dataContractSerializer maxItemsInObjectGraph="2147483646" />
       </behavior>
     </serviceBehaviors>
   </behaviors>
   <serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
 </system.serviceModel>
<system.webServer>
   <modules runAllManagedModulesForAllRequests="true"/>
 </system.webServer>

[ServiceContract]
   public interface IIQService
   {
       [OperationContract]
       List<t_InterviewQ> GetInterviewQ(int yearsExprience);
   }