ramankashyap

does not matter if there is only one endpoint.

If you have only one endpoint for one service contract, you can use the default constructor (parameterless constructor) as follows:

using (ServiceReference1.Service1Client client = new ServiceReference1.Service1Client())
            {
                string result = client.Hello();
            }

ramankashyap

To avoid code break, I have removed the old endpoint now and using the same Mtom/Streamed binding endpoint for all my service calls. Is it fine?

.

You could use MTOM or Steamed in the binding for your endpoint, but you need to update your service reference on the client side or use svcutil command line tool to generate a new config file and import it to the client project.

Regards,
Peter