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SoapElementAttribute.DataType Właściwość

Definicja

Pobiera lub ustawia typ danych języka definicji schematu XML (XSD) wygenerowanego elementu XML.

public:
 property System::String ^ DataType { System::String ^ get(); void set(System::String ^ value); };
public string DataType { get; set; }
member this.DataType : string with get, set
Public Property DataType As String

Wartość właściwości

Jeden z typów danych schematu XML.

Przykłady

Poniższy przykład serializuje wystąpienie klasy o nazwie , która zawiera pole o nazwie TransportationVehicle. Element A SoapElementAttribute jest stosowany do pola. Gdy pole jest serializowane, nazwa elementu XML to "Wheel" zamiast "Vehicle". Metoda SerializeOverride tworzy obiekt SoapElementAttribute i ustawia SoapElement właściwość elementu SoapAttributes na SoapElementAttributewartość . Element SoapAttributes jest dodawany do SoapAttributeOverrides elementu , który służy do tworzenia elementu XmlTypeMapping. Obiekt XmlSerializer jest skonstruowany przy użyciu XmlTypeMappingklasy , a wystąpienie Transportation klasy jest ponownie serializowane. Ponieważ element SoapElementAttribute jest używany do zastąpienia serializacji, wygenerowana nazwa elementu XML to teraz "Truck" zamiast "Wheel".

#using <System.Xml.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;
using namespace System::Collections;
using namespace System::Xml;
using namespace System::Text;
public ref class Thing
{
public:

   [SoapElement(IsNullable=true)]
   String^ ThingName;
};

public ref class Transportation
{
public:

   // The SoapElementAttribute specifies that the
   // generated XML element name will be S"Wheels"
   // instead of S"Vehicle".

   [SoapElement("Wheels")]
   String^ Vehicle;

   [SoapElement(DataType="dateTime")]
   DateTime CreationDate;

   [SoapElement(IsNullable=true)]
   Thing^ thing;
};

public ref class Test
{
public:

   // Return an XmlSerializer used for overriding.
   XmlSerializer^ CreateSoapOverrider()
   {
      // Create the SoapAttributes and SoapAttributeOverrides objects.
      SoapAttributes^ soapAttrs = gcnew SoapAttributes;
      SoapAttributeOverrides^ soapOverrides = gcnew SoapAttributeOverrides;

      // Create an SoapElementAttribute to the Vehicles property.
      SoapElementAttribute^ soapElement1 = gcnew SoapElementAttribute( "Truck" );

      // Set the SoapElement to the Object*.
      soapAttrs->SoapElement = soapElement1;

      // Add the SoapAttributes to the SoapAttributeOverrides,specifying the member to.
      soapOverrides->Add( Transportation::typeid, "Vehicle", soapAttrs );

      // Create the XmlSerializer, and return it.
      XmlTypeMapping^ myTypeMapping = (gcnew SoapReflectionImporter( soapOverrides ))->ImportTypeMapping( Transportation::typeid );
      return gcnew XmlSerializer( myTypeMapping );
   }

   void SerializeOverride( String^ filename )
   {
      // Create an XmlSerializer instance.
      XmlSerializer^ ser = CreateSoapOverrider();

      // Create the Object* and serialize it.
      Transportation^ myTransportation = gcnew Transportation;
      myTransportation->Vehicle = "MyCar";
      myTransportation->CreationDate = DateTime::Now;
      myTransportation->thing = gcnew Thing;
      XmlTextWriter^ writer = gcnew XmlTextWriter( filename,Encoding::UTF8 );
      writer->Formatting = Formatting::Indented;
      writer->WriteStartElement( "wrapper" );
      ser->Serialize( writer, myTransportation );
      writer->WriteEndElement();
      writer->Close();
   }

   void SerializeObject( String^ filename )
   {
      // Create an XmlSerializer instance.
      XmlSerializer^ ser = gcnew XmlSerializer( Transportation::typeid );
      Transportation^ myTransportation = gcnew Transportation;
      myTransportation->Vehicle = "MyCar";
      myTransportation->CreationDate = DateTime::Now;
      myTransportation->thing = gcnew Thing;
      XmlTextWriter^ writer = gcnew XmlTextWriter( filename,Encoding::UTF8 );
      writer->Formatting = Formatting::Indented;
      writer->WriteStartElement( "wrapper" );
      ser->Serialize( writer, myTransportation );
      writer->WriteEndElement();
      writer->Close();
   }
};

int main()
{
   Test^ t = gcnew Test;
   t->SerializeObject( "SoapElementOriginal.xml" );
   t->SerializeOverride( "SoapElementOverride.xml" );
   Console::WriteLine( "Finished writing two XML files." );
}
using System;
using System.IO;
using System.Xml.Serialization;
using System.Collections;
using System.Xml;
using System.Text;
public class Transportation
{
   // The SoapElementAttribute specifies that the
   // generated XML element name will be "Wheels"
   // instead of "Vehicle".
   [SoapElement("Wheels")]
   public string Vehicle;
   [SoapElement(DataType = "dateTime")]
   public DateTime CreationDate;
   [SoapElement(IsNullable = true)]
   public Thing thing;
}

public class Thing{
   [SoapElement(IsNullable=true)] public string ThingName;
}

public class Test
{
   public static void Main()
   {
      Test t = new Test();
      t.SerializeObject("SoapElementOriginal.xml");
      t.SerializeOverride("SoapElementOverride.xml");
      Console.WriteLine("Finished writing two XML files.");
   }

   // Return an XmlSerializer used for overriding.
   public XmlSerializer CreateSoapOverrider()
   {
      // Create the SoapAttributes and SoapAttributeOverrides objects.
      SoapAttributes soapAttrs = new SoapAttributes();

      SoapAttributeOverrides soapOverrides =
      new SoapAttributeOverrides();

      /* Create an SoapElementAttribute to override
      the Vehicles property. */
      SoapElementAttribute soapElement1 =
      new SoapElementAttribute("Truck");
      // Set the SoapElement to the object.
      soapAttrs.SoapElement= soapElement1;

      /* Add the SoapAttributes to the SoapAttributeOverrides,
      specifying the member to override. */
      soapOverrides.Add(typeof(Transportation), "Vehicle", soapAttrs);

      // Create the XmlSerializer, and return it.
      XmlTypeMapping myTypeMapping = (new SoapReflectionImporter
      (soapOverrides)).ImportTypeMapping(typeof(Transportation));
      return new XmlSerializer(myTypeMapping);
   }

   public void SerializeOverride(string filename)
   {
      // Create an XmlSerializer instance.
      XmlSerializer ser = CreateSoapOverrider();

      // Create the object and serialize it.
      Transportation myTransportation =
      new Transportation();

      myTransportation.Vehicle = "MyCar";
      myTransportation.CreationDate=DateTime.Now;
      myTransportation.thing = new Thing();

      XmlTextWriter writer =
      new XmlTextWriter(filename, Encoding.UTF8);
      writer.Formatting = Formatting.Indented;
      writer.WriteStartElement("wrapper");
      ser.Serialize(writer, myTransportation);
      writer.WriteEndElement();
      writer.Close();
   }
   public void SerializeObject(string filename){
      // Create an XmlSerializer instance.
      XmlSerializer ser = new XmlSerializer(typeof(Transportation));
      Transportation myTransportation =
      new Transportation();
      myTransportation.Vehicle = "MyCar";
      myTransportation.CreationDate = DateTime.Now;
      myTransportation.thing = new Thing();
      XmlTextWriter writer =
      new XmlTextWriter(filename, Encoding.UTF8);
      writer.Formatting = Formatting.Indented;
      writer.WriteStartElement("wrapper");
      ser.Serialize(writer, myTransportation);
      writer.WriteEndElement();
      writer.Close();
   }
}
Imports System.IO
Imports System.Xml.Serialization
Imports System.Collections
Imports System.Xml
Imports System.Text

Public Class Transportation
   ' The SoapElementAttribute specifies that the
   ' generated XML element name will be "Wheels"
   ' instead of "Vehicle".
   <SoapElement("Wheels")> Public Vehicle As String 
   <SoapElement(DataType:= "dateTime")> _
   public CreationDate As DateTime    
   <SoapElement(IsNullable:= true)> _
   public thing As Thing
End Class

Public Class Thing
   <SoapElement(IsNullable:=true)> public ThingName As string 
End Class

Public Class Test

   Shared Sub Main()
      Dim t As Test = New Test()
      t.SerializeObject("SoapElementOriginalVb.xml")
      t.SerializeOverride("SoapElementOverrideVb.xml")
      Console.WriteLine("Finished writing two XML files.")
   End Sub

   ' Return an XmlSerializer used for overriding.
   Public Function CreateSoapOverrider() As XmlSerializer 
      ' Create the SoapAttributes and SoapAttributeOverrides objects.
      Dim soapAttrs As SoapAttributes = New SoapAttributes()

      Dim soapOverrides As SoapAttributeOverrides = _
      New SoapAttributeOverrides()
            
      ' Create a SoapElementAttribute to override 
      ' the Vehicles property. 
      Dim soapElement1 As SoapElementAttribute = _
      New SoapElementAttribute("Truck")
      ' Set the SoapElement to the object.
      soapAttrs.SoapElement= soapElement1

      ' Add the SoapAttributes to the SoapAttributeOverrides,
      ' specifying the member to override. 
      soapOverrides.Add(GetType(Transportation), "Vehicle", soapAttrs)
      
      ' Create the XmlSerializer, and return it.
      Dim myTypeMapping As XmlTypeMapping = (New _
      SoapReflectionImporter (soapOverrides)).ImportTypeMapping _
      (GetType(Transportation))
      return New XmlSerializer(myTypeMapping)
   End Function

   Public Sub SerializeOverride(filename As String)
      ' Create an XmlSerializer instance.
      Dim ser As XmlSerializer = CreateSoapOverrider()

      ' Create the object and serialize it.
      Dim myTransportation As Transportation = _
      New Transportation()

      myTransportation.Vehicle = "MyCar"
      myTransportation.CreationDate = DateTime.Now
      myTransportation.thing= new Thing()
      
      Dim writer As XmlTextWriter = _
      New XmlTextWriter(filename, Encoding.UTF8)
      writer.Formatting = Formatting.Indented
      writer.WriteStartElement("wrapper")
      ser.Serialize(writer, myTransportation)
      writer.WriteEndElement()
      writer.Close()
   End Sub

   Public Sub SerializeObject(filename As String)
      ' Create an XmlSerializer instance.
      Dim ser As XmlSerializer = _
      New XmlSerializer(GetType(Transportation))
      
      Dim myTransportation As Transportation = _
      New Transportation()
      
      myTransportation.Vehicle = "MyCar"
      myTransportation.CreationDate=DateTime.Now
      myTransportation.thing= new Thing()

      Dim writer As XmlTextWriter = _
      new XmlTextWriter(filename, Encoding.UTF8)
      writer.Formatting = Formatting.Indented
      writer.WriteStartElement("wrapper")
      ser.Serialize(writer, myTransportation)
      writer.WriteEndElement()
      writer.Close()
   End Sub
End Class

Uwagi

W poniższej tabeli wymieniono proste typy danych schematu XML z odpowiednikami platformy .NET.

W przypadku typów schematów base64Binary i hexBinary danych XML należy użyć tablicy Byte struktur i zastosować SoapElementAttribute element z zestawem DataType "base64Binary" lub "hexBinary", odpowiednio. W przypadku typów schematu time i danych XML użyj DateTime typu i zastosuj SoapElementAttribute element z ustawionym DataType na wartość "date" lub "datetime".

Dla każdego typu danych schematu XML mapowanego na ciąg zastosuj SoapElementAttribute właściwość z właściwością DataType ustawioną na typ schematu XML. Należy pamiętać, że nie zmienia to formatu serializacji, tylko schemat elementu członkowskiego.

Uwaga

Właściwość jest rozróżniana wielkość liter, dlatego należy ustawić ją dokładnie na jeden z typów danych schematu XML.

Uwaga

Przekazywanie danych binarnych jako elementu XML jest bardziej wydajne niż przekazywanie go jako atrybutu XML.

Aby uzyskać więcej informacji na temat typów danych XML, zobacz dokument World Wide Web Consortium, XML Schema Part 2: Datatypes (Schemat XML— część 2: typy danych).

Typ danych XSD Typ danych platformy .NET
anyURI String
Base64binary Tablica Byte obiektów
boolean Boolean
byte SByte
data DateTime
Data i godzina DateTime
decimal Decimal
double Double
JEDNOSTKI String
PODMIOTY String
float Single
gDay String
gMonth String
gMonthDay String
gYear String
gYearMonth String
Hexbinary Tablica Byte obiektów
ID (Identyfikator) String
IDREF String
IDREFS String
int Int32
liczba całkowita String
language String
długi Int64
Nazwa String
NCName String
ujemna liczba całkowita String
NMTOKEN String
NMTOKENS String
normalizedString String
nonNegativeInteger String
nonPositiveInteger String
NOTACJA String
dodatnia liczba całkowita String
QName XmlQualifiedName
czas trwania String
ciąg String
short Int16
time DateTime
token String
unsignedByte Byte
Unsignedint UInt32
unsignedLong UInt64
unsignedShort UInt16

Dotyczy