XmlObjectSerializer Klass

Definition

public ref class XmlObjectSerializer abstract

public abstract class XmlObjectSerializer

type XmlObjectSerializer = class

Public MustInherit Class XmlObjectSerializer

Arv

Object

XmlObjectSerializer

Härledda

System.Runtime.Serialization.DataContractSerializer

System.Runtime.Serialization.Json.DataContractJsonSerializer

System.Runtime.Serialization.NetDataContractSerializer

Exempel

I följande exempel visas en metod med namnet WriteObjectWithInstance som innehåller en XmlObjectSerializer som en parameter. Metoden serialiserar ett objekt med hjälp av antingen DataContractSerializer eller NetDataContractSerializer genom att anropa WriteObject metoden.

public class Test
{
    private void WriteObjectWithInstance(XmlObjectSerializer xm, Company graph,
       string fileName)
    {
        // Use either the XmlDataContractSerializer or NetDataContractSerializer,
        // or any other class that inherits from XmlObjectSerializer to write with.
        Console.WriteLine(xm.GetType());
        FileStream fs = new FileStream(fileName, FileMode.Create);
        XmlDictionaryWriter writer = XmlDictionaryWriter.CreateTextWriter(fs);
        xm.WriteObject(writer, graph);
        Console.WriteLine("Done writing {0}", fileName);
    }

    private void Run()
    {
        // Create the object to write to a file.
        Company graph = new Company();
        graph.Name = "cohowinery.com";

        // Create a DataContractSerializer and a NetDataContractSerializer.
        // Pass either one to the WriteObjectWithInstance method.
        DataContractSerializer dcs = new DataContractSerializer(typeof(Company));
        NetDataContractSerializer ndcs = new NetDataContractSerializer();
        WriteObjectWithInstance(dcs, graph, @"datacontract.xml");
        WriteObjectWithInstance(ndcs, graph, @"netDatacontract.xml");
    }

    [DataContract]
    public class Company
    {
        [DataMember]
        public string Name;
    }

    static void Main()
    {
        try
        {
            Console.WriteLine("Starting");
            Test t = new Test();
            t.Run();
            Console.WriteLine("Done");
            Console.ReadLine();
        }

        catch (InvalidDataContractException iExc)
        {
            Console.WriteLine("You have an invalid data contract: ");
            Console.WriteLine(iExc.Message);
            Console.ReadLine();
        }

        catch (SerializationException serExc)
        {
            Console.WriteLine("There is a problem with the instance:");
            Console.WriteLine(serExc.Message);
            Console.ReadLine();
        }

        catch (QuotaExceededException qExc)
        {
            Console.WriteLine("The quota has been exceeded");
            Console.WriteLine(qExc.Message);
            Console.ReadLine();
        }
        catch (Exception exc)
        {
            Console.WriteLine(exc.Message);
            Console.WriteLine(exc.ToString());
            Console.ReadLine();
        }
    }

Public Class Test
    
    Private Sub WriteObjectWithInstance(ByVal xm As XmlObjectSerializer, _
      ByVal graph As Company, ByVal fileName As String) 
        ' Use either the XmlDataContractSerializer or NetDataContractSerializer,
        ' or any other class that inherits from XmlObjectSerializer to write with.
        Console.WriteLine(xm.GetType())
        Dim fs As New FileStream(fileName, FileMode.Create)
        Dim writer As XmlDictionaryWriter = XmlDictionaryWriter.CreateTextWriter(fs)
        xm.WriteObject(writer, graph)
        Console.WriteLine("Done writing {0}", fileName)
    
    End Sub 
    
    
    Private Sub Run() 
        ' Create the object to write to a file.
        Dim graph As New Company()
        graph.Name = "cohowinery.com"
        
        ' Create a DataContractSerializer and a NetDataContractSerializer.
        ' Pass either one to the WriteObjectWithInstance method.
        Dim dcs As New DataContractSerializer(GetType(Company))
        Dim ndcs As New NetDataContractSerializer()
        WriteObjectWithInstance(dcs, graph, "datacontract.xml")
        WriteObjectWithInstance(ndcs, graph, "netDatacontract.xml")
    
    End Sub 
    
    <DataContract()>  _
    Public Class Company
        <DataMember()>  _
        Public Name As String
    End Class 
    
    
    Shared Sub Main() 
        Try
            Console.WriteLine("Starting")
            Dim t As New Test()
            t.Run()
            Console.WriteLine("Done")
            Console.ReadLine()
        
        Catch iExc As InvalidDataContractException
            Console.WriteLine("You have an invalid data contract: ")
            Console.WriteLine(iExc.Message)
            Console.ReadLine()
        
        Catch serExc As SerializationException
            Console.WriteLine("There is a problem with the instance:")
            Console.WriteLine(serExc.Message)
            Console.ReadLine()
        
        Catch qExc As QuotaExceededException
            Console.WriteLine("The quota has been exceeded")
            Console.WriteLine(qExc.Message)
            Console.ReadLine()
        Catch exc As Exception
            Console.WriteLine(exc.Message)
            Console.WriteLine(exc.ToString())
            Console.ReadLine()
        End Try
    
    End Sub 
End Class

Kommentarer

XmlObjectSerializer Utöka för att skapa en egen serialiserare för att serialisera och deserialisera objekt. DataContractSerializer Både klassen och NetDataContractSerializer klassen ärver från XmlObjectSerializer och används för att serialisera och deserialisera objekt som överensstämmer med datakontraktsregler (objekt som skapats med och DataContractAttributeDataMemberAttribute).

Anteckningar till implementerare

När du ärver från XmlObjectSerializermåste du åsidosätta följande medlemmar: WriteStartObject(XmlDictionaryWriter, Object), WriteObjectContent(XmlDictionaryWriter, Object), WriteEndObject(XmlDictionaryWriter). Dessutom IsStartObject måste metoderna och ReadObject implementeras för läsning och deserialisering.

Se även

• DataContractSerializer
• NetDataContractSerializer
• Använda datakontrakt
• Serialiserare för datakontrakt