What is fault exception in WCF?
The fault exception is used to pass the custom error message from the server to the client, inside the SOAP response XML. When the response is received by the client, the custom exception message is set by the service and is also available in the tag in the SOAP.
How do you handle fault exceptions?
Fault exception in WCF
- Create a WCF Service Application named “FaultException”. Write an operation contract in the interface of the default file named “IService1. cs”.
- Create the console application named “ClientApp” for the client. Right-click on the project and select “Add Service Reference”.
What is a fault exception?
Fault exceptions are triggered when the processor detects an error such as the execution of an undefined instruction, or when the bus system returns an error response to a memory access.
Which contract is used for error handling in WCF?
Since a client’s concern area is not about how an error occurred or the factors contributing to an error, SOAP Fault contract is used to communicate the error message from the service to the client in WCF. A Fault contract enables the client to have a documented view of the errors occurred in a service.
What is the difference between fault exception and regular dot net exception?
Exceptions are used to communicate errors locally within the service or the client implementation. Faults, on the other hand, are used to communicate errors across service boundaries, such as from the server to the client or vice versa.
How would you handle a WCF exception in a client?
Error handling in WCF is performed by one or more of the following:
- Directly handling the exception thrown. This is only done for communication and proxy/channel errors.
- Using fault contracts.
- Implementing the IErrorHandler interface.
- Handling ServiceHost events.
Why We Need fault contracts in WCF why not just use error codes?
A Fault Contract is a way to handle an error/exception in WCF. In C# we can handle the error using try and catch blocks at the client-side. The purpose of a Fault Contract is to handle an error by the service class and display in the client-side.
What is difference between communication exception and FaultException in WCF?
In a WCF service, if it throws an exception inside the service, the client will not get the details. In order to get the formatted exception details on client side, you need to use FaultException instead to let the client know the details. The FaultException information can be serialized as expected.
Which type of exception can be thrown from WCF service?
Exceptions that are thrown from communication methods on a Windows Communication Foundation (WCF) client are either expected or unexpected. Unexpected exceptions include catastrophic failures like OutOfMemoryException and programming errors like ArgumentNullException or InvalidOperationException .
What is the difference between communication exception and fault exception in WCF?
What is Faultcontract in WCF?
What is fault Contract? A Fault Contract is a way to handle an error/exception in WCF. In C# we can handle the error using try and catch blocks at the client-side. The purpose of a Fault Contract is to handle an error by the service class and display in the client-side.