One of the reasons for WCF update service reference error

1. Background introduction

wcf Front-end SentryClient client = new SentryClient(); Report errors , Can't quote

2. Ideas & programme

1. Reconfigure add iis Environmental Science
2. One interface, one interface for troubleshooting
3. The front end re references the back-end code

3. The process

Experiment one by one

4. summary

wcf Interface cannot implement callback function as parameter
programme ： Put the method containing the callback function on the front