InvalidDataContractException InvalidDataContractException InvalidDataContractException InvalidDataContractException Class

Определение

public ref class InvalidDataContractException : Exception

[System.Serializable]
public class InvalidDataContractException : Exception

type InvalidDataContractException = class
    inherit Exception

Public Class InvalidDataContractException
Inherits Exception

Наследование

ObjectObjectObjectObject

ExceptionExceptionExceptionException

InvalidDataContractExceptionInvalidDataContractExceptionInvalidDataContractExceptionInvalidDataContractException

Атрибуты

SerializableAttribute

Примеры

В следующем примере показан контракт службы ICalculator, включающий два метода: Add и MoreData.The following example shows a service contract, ICalculator, that includes two methods, Add and MoreData. Метод MoreData возвращает экземпляр класса ExtraData, который также объявляется в коде.The MoreData method returns an instance of the ExtraData class, which is also declared in the code. При выполнении реализованного интерфейса Calculator будет выдано исключение InvalidDataContractException, так как к классу ExtraData не был применен атрибут DataContractAttribute.When the implemented interface Calculator runs, an InvalidDataContractException will be thrown because the ExtraData class does not have the DataContractAttribute applied to it.

public  class Test
{
    static void Main()
    {
        try
        {
            Test t = new Test();
            t.Run();
        }
             
        // Catch the InvalidDataContractException here.
        catch(InvalidDataContractException iExc)
        {
            Console.WriteLine("You have an invalid data contract: ");
            Console.WriteLine(iExc.Message);
            Console.ReadLine();
            
        }
          catch (Exception exc)
        {
            Console.WriteLine(exc.Message);
            Console.WriteLine(exc.ToString() );
            Console.ReadLine();
        }
    }

    private void Run()
    {
        // Create a new WSHttpBinding and set the security mode to Message;
        WSHttpBinding b = new WSHttpBinding(SecurityMode.Message);

        // Create a ServiceHost instance, and add a metadata endpoint.
        Uri baseUri= new Uri("http://localhost:1008/");            
        ServiceHost sh = new ServiceHost(typeof(Calculator), baseUri);

        // Optional. Add a metadata endpoint. The method is defined below.
        AddMetadataEndpoint(ref sh);

        // Add an endpoint using the binding, and open the service.
        sh.AddServiceEndpoint(typeof(ICalculator), b, "myCalculator");
        sh.Open();
        
        Console.WriteLine("Listening...");
        Console.ReadLine();

    }

    private void AddMetadataEndpoint(ref ServiceHost sh)
    {
        Uri mex = new Uri(@"http://localhost:1001/metadata/");
        ServiceMetadataBehavior sm = new ServiceMetadataBehavior();
        sm.HttpGetEnabled = true;
        sm.HttpGetUrl = mex;
        sh.Description.Behaviors.Add(sm);
    }
    
}

// This class will cause an InvalidDataContractException to be thrown because
// neither the DataContractAttribute nor DataMemberAttribute has been applied to it.
public class ExtraData
{
    public System.Collections.Generic.List<string> RandomData;
}

[ServiceContract(ProtectionLevel=System.Net.Security.ProtectionLevel.EncryptAndSign) ]
interface ICalculator
{
    [OperationContract]
    double Add(double a, double b);

    [OperationContract]
    ExtraData MoreData();
}

public class Calculator : ICalculator
{ 
    public double Add(double a, double b)
    {
        return a + b;
    }

    public ExtraData MoreData()
    {
        ExtraData ex = new ExtraData();
        ex.RandomData.Add("Hello");
        ex.RandomData.Add( "World" );
        return ex;
    }
}

Public Class Test
    
    Shared Sub Main() 
        Try
            Dim t As New Test()
            t.Run()
        
        ' Catch the InvalidDataContractException here.
        Catch iExc As InvalidDataContractException
            Console.WriteLine("You have an invalid data contract: ")
            Console.WriteLine(iExc.Message)
            Console.ReadLine()
        
        Catch exc As Exception
            Console.WriteLine(exc.Message)
            Console.WriteLine(exc.ToString())
            Console.ReadLine()
        End Try
    
    End Sub 
    
    Private Sub Run() 
        ' Create a new WSHttpBinding and set the security mode to Message;
        Dim b As New WSHttpBinding(SecurityMode.Message)
        
        ' Create a ServiceHost instance, and add a metadata endpoint.
        Dim baseUri As New Uri("http://localhost:1008/")
        Dim sh As New ServiceHost(GetType(Calculator), baseUri)
        
        ' Optional. Add a metadata endpoint. The method is defined below.
        AddMetadataEndpoint(sh)
        
        ' Add an endpoint using the binding, and open the service.
        sh.AddServiceEndpoint(GetType(ICalculator), b, "myCalculator")
        sh.Open()
        
        Console.WriteLine("Listening...")
        Console.ReadLine()
    
    End Sub 
    
    Private Sub AddMetadataEndpoint(ByRef sh As ServiceHost) 
        Dim mex As New Uri("http://localhost:1001/metadata/")
        Dim sm As New ServiceMetadataBehavior()
        sm.HttpGetEnabled = True
        sm.HttpGetUrl = mex
        sh.Description.Behaviors.Add(sm)
    
    End Sub 
End Class 

' This class will cause an InvalidDataContractException to be thrown because
' neither the DataContractAttribute nor DataMemberAttribute has been applied to it.

Public Class ExtraData
    Public RandomData As System.Collections.Generic.List(Of String)
End Class 

<ServiceContract(ProtectionLevel := System.Net.Security.ProtectionLevel.EncryptAndSign)>  _
Interface ICalculator
    <OperationContract()>  _
    Function Add(ByVal a As Double, ByVal b As Double) As Double 
    
    <OperationContract()>  _
    Function MoreData() As ExtraData 
End Interface 

Public Class Calculator
    Implements ICalculator
    
    Public Function Add(ByVal a As Double, ByVal b As Double) As Double _
    Implements ICalculator.Add
        Return a + b
    End Function 
        
    Public Function MoreData() As ExtraData Implements ICalculator.MoreData
        Dim ex As New ExtraData()
        ex.RandomData.Add("Hello")
        ex.RandomData.Add("World")
        Return ex
    End Function 
End Class 

Комментарии

Экземпляр этого типа выдается, если DataContractSerializer или NetDataContractSerializer обнаруживает, что сериализуемый или десериализуемый экземпляр имеет недопустимый тип.An instance of this type will be thrown if the DataContractSerializer or NetDataContractSerializer detects that the type of the instance being serialized or deserialized is invalid. Экземпляр этого типа также выдается, если недопустимый тип передается в модуль импорта или экспорта схемы.An instance of this type will also be thrown if an invalid type is passed to the schema import or export engine.

Конструкторы

Свойства

Методы

События

Применяется к

Дополнительно

• DataContractSerializer
• Использование контрактов данныхUsing Data Contracts