juniorWCF
What is a service contract in WCF?
Updated May 6, 2026
Short answer
Service contract defines operations exposed by a WCF service.
Deep explanation
It is an interface marked with [ServiceContract] and methods marked with [OperationContract].
Real-world example
Order service exposing GetOrder and CreateOrder operations.
Common mistakes
- Forgetting OperationContract attribute.
Follow-up questions
- What happens without OperationContract?
- Can interfaces inherit contracts?