Get Client Ip in Asp.Net

private string GetClientIP()
    {
      System.ServiceModel.Channels.RemoteEndpointMessageProperty clientEndpoint =
        System.ServiceModel.OperationContext.Current.IncomingMessageProperties[
        System.ServiceModel.Channels.RemoteEndpointMessageProperty.Name] as System.ServiceModel.Channels.RemoteEndpointMessageProperty;
      
      return String.Format(
        "{0}:{1}",
        clientEndpoint.Address, clientEndpoint.Port);
    }