How would you handle a WCF exception in a client?

How would you handle a WCF exception in a client?

Error handling in WCF is performed by one or more of the following:

  1. Directly handling the exception thrown. This is only done for communication and proxy/channel errors.
  2. Using fault contracts.
  3. Implementing the IErrorHandler interface.
  4. Handling ServiceHost events.

How does WCF client catch fault exceptions?

Fault exception in WCF

  1. Create a WCF service application that has an operation contract for the division of 2 passed values by the client.
  2. Create a Console application and add a reference for the WCF service into it. Then access the method of the WCF service to do the division of passed values.

How fault contract is implemented in WCF?

Raise the exception from the service by creating an instance and assigning properties of the custom exception.

  1. Step 1: Defining the type using Data Contract.
  2. Step 2: Decorate the service operation with the FaultContract.
  3. Step 3: Raise the exception from the service.

Which type of exception can be thrown from WCF service?

Fault exceptions are exceptions that are thrown by a WCF service when an exception occurs at runtime — such exceptions are typically used to transmit untyped fault data to the service consumers.

Which contract in WCF is used for error handling?

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.

Which of the message exchange pattern is not supported in WCF?

Even if some error occurs in communication, WCF Service doesn’t send any response back. That’s why One-Way Message Exchange Pattern provides no support for followings in service operations: no output parameters. no reference parameters.

What are fault contracts in WCF and their use?

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.

Which interface is global exception handling in WCF?

IErrorHandler interface
Handling exceptions globally Another way to handle exceptions in WCF is by implementing the IErrorHandler interface on your service class to handle all exceptions globally and provide a SOAP compliant FaultException.

What are the possible ways of hosting a WCF service?

There are three types of hosting environments for WCF services: IIS, WAS, and self-hosting. The term “self-hosting” refers to any application that provides its own code to initialize the hosting environment. This includes console, Windows Forms, WPF, and managed Windows services.

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.

What is ierrorhandler in WCF?

The IErrorHandler interface allows you more control over how your WCF application responds to errors. It gives you full control over the fault message that is returned to the client and allows you to perform custom error processing such as logging.

How are application errors handled in WCF?

Application errors occur during the execution of a service operation. Errors of this kind are sent to the client as FaultException or FaultException . 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.

How do I use exceptions in WCF?

In WCF desirable to use special exceptions described as contracts, because your client may not be .NET application which has information about standard .NET exceptions. For do this you can define the FaultContract in the your service and then use the FaultException class.

What is the client side of a WSCF interface?

The client side uses ChannelFactory and shares the interface which includes all the attributes added by to match what is in the XSD. I’m trying to implement IErrorHandler.ProvideFault where it provides a generic FaultException , but on the client side I’m getting back a non-generic FaultContract.