WCF Example for Inserting and Displaying Data from SQL Serve

Question

Hello

I am using the exmple of Inserting and displaying data by using a WCF. I am getting the following error, when I run my service.

Failed to invoke the service. Possible causes: The service is offline or inaccessible; the client-side configuration does not match the proxy; the existing proxy is invalid. Refer to the stack trace for more detail. You can try to recover by starting a new proxy, restoring to default configuration, or refreshing the service.