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11/18/2011

FaultContractAttribute Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Specifies one or more SOAP faults that are returned when a service operation encounters processing errors.

Inheritance Hierarchy

System.Object
System.Attribute
System.ServiceModel.FaultContractAttribute

Namespace: System.ServiceModel
Assembly: System.ServiceModel (in System.ServiceModel.dll)

Syntax

'Declaration
<AttributeUsageAttribute(AttributeTargets.Method, AllowMultiple := True, Inherited := False)> _
Public NotInheritable Class FaultContractAttribute _
    Inherits Attribute

[AttributeUsageAttribute(AttributeTargets.Method, AllowMultiple = true, Inherited = false)]
public sealed class FaultContractAttribute : Attribute

The FaultContractAttribute type exposes the following members.

Constructors

	Name	Description
	FaultContractAttribute	Initializes a new instance of the FaultContractAttribute class.

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Properties

	Name	Description
	Action	Gets or sets the action of the SOAP fault message that is specified as part of the operation contract.
	DetailType	Gets the type of a serializable object that contains error information.
	Name	Gets or sets the name of the fault message in Web Services Description Language (WSDL).
	Namespace	Gets or sets the namespace of the SOAP fault.

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Methods

	Name	Description
	Equals	Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Returns the hash code for this instance. (Inherited from Attribute.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Match	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Examples

[ServiceContract(Namespace = "")]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class Service
{
    [OperationContract]
    // Define the fault contract for an operation.
    [FaultContract(typeof(ArithmeticFault))]
    public int Calculate(Operation op, int a, int b)
    {
        switch (op)
        {
            case Operation.Add:
                return a + b;
                break;

            case Operation.Subtract:
                return a - b;
                break;

            case Operation.Multiply:
                return a * b;
                break;

            case Operation.Divide:

                // Add support for faults
                try
                {
                    return a / b;
                }
                catch (DivideByZeroException e)
                {
                    ArithmeticFault fault = new ArithmeticFault();
                    fault.Operation = Operation.Divide;
                    fault.Description = e.Message;
                    throw new FaultException<ArithmeticFault>(fault);
                }

                break;
        }

        return 0;
    }
}

public enum Operation
{
    Add,
    Subtract,
    Multiply,
    Divide
}

public class ArithmeticFault
{
    public Operation Operation { get; set; }
    public string Description { get; set; }
}

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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