Question

I have created a multi-endpoint WCF service and consumed and it is working fine.

But when I am trying to close the service client then am getting error.

This is how I am creating the client object and disposing its working fine for single endpoint WCF service

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        ICardPrintingService Service = null;
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Service = new CardPrintingServiceClient();
            var response = this.Service.GetCardData(new GetCardDataRequest { NIK = 6666620501740003 });
            try
            {
                ((CardPrintingServiceClient)Service).Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show("error");
            }
        }
    }
}

This is going to the catch block when closing the connection with error message

The remote endpoint no longer recognizes this sequence. This is most
likely due to an abort on the remote endpoint. The value of
wsrm:Identifier is not a known Sequence identifier. The reliable
session was faulted.

Can some one tell me why?

Thanks a ton in adv

Raghavendra

Answer 1

What is the need of casting overhere.

((CardPrintingServiceClient)Service).Close(); //pls explain this.

you can try this in finally block.

if (Service.State != System.ServiceModel.CommunicationState.Closed)
  {
     Service.Abort();
  }