FaultException<TDetail> FaultException<TDetail> FaultException<TDetail> FaultException<TDetail> Class

Definition

Used in a client application to catch contractually-specified SOAP faults.

generic <typename TDetail>
public ref class FaultException : System::ServiceModel::FaultException
[Serializable]
public class FaultException<TDetail> : System.ServiceModel.FaultException
type FaultException<'Detail> = class
    inherit FaultException
Public Class FaultException(Of TDetail)
Inherits FaultException

Type Parameters

TDetail

The serializable error detail type.

Inheritance
Derived
Attributes
SerializableAttribute

Examples

The following code example shows how a service uses the FaultException<TDetail> type to throw a managed exception that gets converted into the SOAP fault specified by the FaultContractAttribute.

using System;
using System.Collections.Generic;
using System.Net.Security;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.Text;

namespace Microsoft.WCF.Documentation
{
  [ServiceContract(Namespace="http://microsoft.wcf.documentation")]
  public interface ISampleService{
    [OperationContract]
    [FaultContractAttribute(
      typeof(GreetingFault),
      Action="http://www.contoso.com/GreetingFault",
      ProtectionLevel=ProtectionLevel.EncryptAndSign
      )]
    string SampleMethod(string msg);
  }
 
  [DataContractAttribute]
  public class GreetingFault
  { 
    private string report;

    public GreetingFault(string message)
    {
      this.report = message;
    }

    [DataMemberAttribute]
    public string Message
    {
      get { return this.report; }
      set { this.report = value; }
    }
  }

  class SampleService : ISampleService
  {
  #region ISampleService Members

  public string  SampleMethod(string msg)
  {
    Console.WriteLine("Client said: " + msg);
    // Generate intermittent error behavior.
    Random rnd = new Random(DateTime.Now.Millisecond);
    int test = rnd.Next(5);
    if (test % 2 != 0)
      return "The service greets you: " + msg; 
    else
      throw new FaultException<GreetingFault>(new GreetingFault("A Greeting error occurred. You said: " + msg));
  }

  #endregion
  }
}

Imports System
Imports System.Collections.Generic
Imports System.Net.Security
Imports System.Runtime.Serialization
Imports System.ServiceModel
Imports System.Text

Namespace Microsoft.WCF.Documentation
  <ServiceContract(Namespace:="http://microsoft.wcf.documentation")> _
  Public Interface ISampleService
	<OperationContract, FaultContractAttribute(GetType(GreetingFault), Action:="http://www.contoso.com/GreetingFault", ProtectionLevel:=ProtectionLevel.EncryptAndSign)> _
	Function SampleMethod(ByVal msg As String) As String
  End Interface

  <DataContractAttribute> _
  Public Class GreetingFault
	Private report As String

	Public Sub New(ByVal message As String)
	  Me.report = message
	End Sub

	<DataMemberAttribute> _
	Public Property Message() As String
	  Get
		  Return Me.report
	  End Get
	  Set(ByVal value As String)
		  Me.report = value
	  End Set
	End Property
  End Class

  Friend Class SampleService
	  Implements ISampleService
  #Region "ISampleService Members"

  Public Function SampleMethod(ByVal msg As String) As String Implements ISampleService.SampleMethod
	Console.WriteLine("Client said: " & msg)
	' Generate intermittent error behavior.
	Dim rand As New Random(DateTime.Now.Millisecond)
	Dim test As Integer = rand.Next(5)
	If test Mod 2 <> 0 Then
	  Return "The service greets you: " & msg
	Else
	  Throw New FaultException(Of GreetingFault)(New GreetingFault("A Greeting error occurred. You said: " & msg))
	End If
  End Function

  #End Region
  End Class
End Namespace

The following code example shows how the client code looks when imported by the client using the ServiceModel Metadata Utility Tool (Svcutil.exe).

The following code example shows how a client can catch the FaultException<TDetail> type that represents the custom SOAP fault specified in the operation contract.

using System;
using System.ServiceModel;
using System.ServiceModel.Channels;
using Microsoft.WCF.Documentation;

public class Client
{
  public static void Main()
  {
    // Picks up configuration from the config file.
    SampleServiceClient wcfClient = new SampleServiceClient();
    try
    {
      // Making calls.
      Console.WriteLine("Enter the greeting to send: ");
      string greeting = Console.ReadLine();
      Console.WriteLine("The service responded: " + wcfClient.SampleMethod(greeting));

      Console.WriteLine("Press ENTER to exit:");
      Console.ReadLine();

      // Done with service. 
      wcfClient.Close();
      Console.WriteLine("Done!");
    }
    catch (TimeoutException timeProblem)
    {
      Console.WriteLine("The service operation timed out. " + timeProblem.Message);
      Console.ReadLine();
      wcfClient.Abort();
    }
    catch (FaultException<GreetingFault> greetingFault)
    {
      Console.WriteLine(greetingFault.Detail.Message);
      Console.ReadLine();
      wcfClient.Abort();
    }
    catch (FaultException unknownFault)
    {
      Console.WriteLine("An unknown exception was received. " + unknownFault.Message);
      Console.ReadLine();
      wcfClient.Abort();
    }
    catch (CommunicationException commProblem)
    {
      Console.WriteLine("There was a communication problem. " + commProblem.Message + commProblem.StackTrace);
      Console.ReadLine();
      wcfClient.Abort();
    }
  }
}

Imports System
Imports System.ServiceModel
Imports System.ServiceModel.Channels
Imports Microsoft.WCF.Documentation

Public Class Client
  Public Shared Sub Main()
	' Picks up configuration from the config file.
	Dim wcfClient As New SampleServiceClient()
	Try
	  ' Making calls.
	  Console.WriteLine("Enter the greeting to send: ")
	  Dim greeting As String = Console.ReadLine()
	  Console.WriteLine("The service responded: " & wcfClient.SampleMethod(greeting))

	  Console.WriteLine("Press ENTER to exit:")
	  Console.ReadLine()

	  ' Done with service. 
	  wcfClient.Close()
	  Console.WriteLine("Done!")
	Catch timeProblem As TimeoutException
	  Console.WriteLine("The service operation timed out. " & timeProblem.Message)
	  Console.ReadLine()
	  wcfClient.Abort()
	Catch greetingFault As FaultException(Of GreetingFault)
	  Console.WriteLine(greetingFault.Detail.Message)
	  Console.ReadLine()
	  wcfClient.Abort()
	Catch unknownFault As FaultException
	  Console.WriteLine("An unknown exception was received. " & unknownFault.Message)
	  Console.ReadLine()
	  wcfClient.Abort()
	Catch commProblem As CommunicationException
	  Console.WriteLine("There was a communication problem. " & commProblem.Message + commProblem.StackTrace)
	  Console.ReadLine()
	  wcfClient.Abort()
	End Try
  End Sub
End Class

Remarks

Catch the FaultException<TDetail> object in a Windows Communication Foundation (WCF) client application to handle a SOAP fault that has been contractually specified in an operation contract.

Typical deployed services use the FaultContractAttribute to formally specify all SOAP faults that a client can expect to receive in the normal course of an operation. Error information in a FaultContractAttribute appears as a FaultException<TDetail> (where the typeparameter is the serializable error object specified in the operation's FaultContractAttribute) when it arrives at a client application. The FaultContractAttribute can be used to specify SOAP faults for both two-way service methods and for asynchronous method pairs.

Because FaultException<TDetail> is both a FaultException and therefore a CommunicationException, to catch specified SOAP faults make sure you catch the FaultException<TDetail> types prior to the FaultException and CommunicationException types or handle the specified exceptions in one of those exception handlers.

Note

If you use System.ServiceModel.FaultContractAttribute to specify a FaultException<TDetail> where the type parameter is a System.String, the string value is assigned to the Detail property in the client application; clients cannot retrieve that string by calling the FaultException<TDetail>.ToString method. To have the string value returned when the client application calls Exception.ToString, throw a System.ServiceModel.FaultException exception inside the operation and pass the string to the constructor.
In general, it is recommended that detail types be custom serializable types appropriate to the fault and not a System.String.

Constructors

FaultException<TDetail>(SerializationInfo, StreamingContext) FaultException<TDetail>(SerializationInfo, StreamingContext) FaultException<TDetail>(SerializationInfo, StreamingContext) FaultException<TDetail>(SerializationInfo, StreamingContext)

Initializes a new instance of the FaultException<TDetail> class using the specified serialization information and context when deserializing a stream into a FaultException object.

FaultException<TDetail>(TDetail) FaultException<TDetail>(TDetail) FaultException<TDetail>(TDetail) FaultException<TDetail>(TDetail)

Initializes a new instance of the FaultException<TDetail> class that uses the specified detail object.

FaultException<TDetail>(TDetail, FaultReason) FaultException<TDetail>(TDetail, FaultReason) FaultException<TDetail>(TDetail, FaultReason) FaultException<TDetail>(TDetail, FaultReason)

Initializes a new instance of the FaultException<TDetail> class that uses the specified detail object and fault reason.

FaultException<TDetail>(TDetail, FaultReason, FaultCode) FaultException<TDetail>(TDetail, FaultReason, FaultCode) FaultException<TDetail>(TDetail, FaultReason, FaultCode) FaultException<TDetail>(TDetail, FaultReason, FaultCode)

Initializes a new instance of the FaultException<TDetail> class that uses the specified detail object, fault reason, and fault code.

FaultException<TDetail>(TDetail, FaultReason, FaultCode, String) FaultException<TDetail>(TDetail, FaultReason, FaultCode, String) FaultException<TDetail>(TDetail, FaultReason, FaultCode, String) FaultException<TDetail>(TDetail, FaultReason, FaultCode, String)

Initializes a new instance of the FaultException<TDetail> class that uses the specified detail object, and SOAP fault reason, code and action values.

FaultException<TDetail>(TDetail, String) FaultException<TDetail>(TDetail, String) FaultException<TDetail>(TDetail, String) FaultException<TDetail>(TDetail, String)

Initializes a new instance of the FaultException<TDetail> class that uses the specified detail and fault reason.

FaultException<TDetail>(TDetail, String, FaultCode) FaultException<TDetail>(TDetail, String, FaultCode) FaultException<TDetail>(TDetail, String, FaultCode) FaultException<TDetail>(TDetail, String, FaultCode)

Initializes a new instance of the FaultException<TDetail> class that uses the specified detail object, fault reason, and fault code.

FaultException<TDetail>(TDetail, String, FaultCode, String) FaultException<TDetail>(TDetail, String, FaultCode, String) FaultException<TDetail>(TDetail, String, FaultCode, String) FaultException<TDetail>(TDetail, String, FaultCode, String)

Initializes a new instance of the FaultException<TDetail> class that uses the specified detail object, and SOAP fault reason, code and action values.

Properties

Action Action Action Action

Gets the value of the SOAP action for the fault message.

(Inherited from FaultException)
Code Code Code Code

Gets the fault code for the SOAP fault.

(Inherited from FaultException)
Data Data Data Data

Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(Inherited from Exception)
Detail Detail Detail Detail

Gets the object that contains the detail information of the fault condition.

HelpLink HelpLink HelpLink HelpLink

Gets or sets a link to the help file associated with this exception.

(Inherited from Exception)
HResult HResult HResult HResult

Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(Inherited from Exception)
InnerException InnerException InnerException InnerException

Gets the Exception instance that caused the current exception.

(Inherited from Exception)
Message Message Message Message

Gets the message for the exception.

(Inherited from FaultException)
Reason Reason Reason Reason

Gets the FaultReason for the SOAP fault.

(Inherited from FaultException)
Source Source Source Source

Gets or sets the name of the application or the object that causes the error.

(Inherited from Exception)
StackTrace StackTrace StackTrace StackTrace

Gets a string representation of the immediate frames on the call stack.

(Inherited from Exception)
TargetSite TargetSite TargetSite TargetSite

Gets the method that throws the current exception.

(Inherited from Exception)

Methods

CreateMessageFault() CreateMessageFault() CreateMessageFault() CreateMessageFault()

Creates a MessageFault object that can be used to create a Message that represents the SOAP fault.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetBaseException() GetBaseException() GetBaseException() GetBaseException()

When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.

(Inherited from Exception)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext) GetObjectData(SerializationInfo, StreamingContext)

Implementation of the GetObjectData(SerializationInfo, StreamingContext) method that is called when the object is serialized into a stream.

GetType() GetType() GetType() GetType()

Gets the runtime type of the current instance.

(Inherited from Exception)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Returns a string for the FaultException<TDetail> object.

Events

SerializeObjectState SerializeObjectState SerializeObjectState SerializeObjectState

Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(Inherited from Exception)

Applies to