XmlElementAttribute.DataType Eigenschaft

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

Eigenschaftswert

Ausnahmen

Beispiele

Im folgenden Beispiel wird eine Klasse mit dem Group Namen serialisiert, die ExtraInfoein Feld mit dem ArrayListNamen enthält, das einen zurückgibt.The following example serializes a class named Group that contains a field named ExtraInfo, which returns an ArrayList. Im Beispiel werden zwei Instanzen von XmlElementAttribute auf das-Feld angewendet, und es werden unterschiedliche DataType Werte für jede Instanz angegeben.The example applies two instances of the XmlElementAttribute to the field and specifies different DataType values for each instance. Jede-Instanz ermöglicht XmlSerializer das Serialisieren der in das Array eingefügten angegebenen Typen.Each instance enables the XmlSerializer to serialize the specified types inserted into the array.

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

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

   /* Apply two XmlElementAttributes to the field. Set the DataType
      to string an int to allow the ArrayList to accept 
      both types. The Namespace is also set to different values
      for each type. */

   [XmlElement(DataType="string",
   Type=String::typeid,
   Namespace="http://www.cpandl.com"),
   XmlElement(DataType="snippet1>",
   Namespace="http://www.cohowinery.com",
   Type=Int32::typeid)]
   ArrayList^ ExtraInfo;
};

void SerializeObject( String^ filename )
{
   // A TextWriter is needed to write the file.
   TextWriter^ writer = gcnew StreamWriter( filename );

   // Create the XmlSerializer using the XmlAttributeOverrides.
   XmlSerializer^ s = gcnew XmlSerializer( Group::typeid );

   // Create the object to serialize.
   Group^ myGroup = gcnew Group;

   /* Add a string and an integer to the ArrayList returned
      by the ExtraInfo field. */
   myGroup->ExtraInfo = gcnew ArrayList;
   myGroup->ExtraInfo->Add( "hello" );
   myGroup->ExtraInfo->Add( 100 );

   // Serialize the object and close the TextWriter.
   s->Serialize( writer, myGroup );
   writer->Close();
}

int main()
{
   SerializeObject( "ElementTypes.xml" );
}

using System;
using System.Collections;
using System.IO;
using System.Xml.Serialization;

public class Group
{
   /* Apply two XmlElementAttributes to the field. Set the DataType
      to string an int to allow the ArrayList to accept 
      both types. The Namespace is also set to different values
      for each type. */ 
   [XmlElement(DataType = "string",
   Type = typeof(string),
   Namespace = "http://www.cpandl.com"),
   XmlElement(DataType = "int", 
   Namespace = "http://www.cohowinery.com",
   Type = typeof(int))]
   public ArrayList ExtraInfo;
}

public class Run
{
    public static void Main()
    {
       Run test = new Run();
       test.SerializeObject("ElementTypes.xml");
          }

    public void SerializeObject(string filename)
    {
      // A TextWriter is needed to write the file.
      TextWriter writer = new StreamWriter(filename);

      // Create the XmlSerializer using the XmlAttributeOverrides.
      XmlSerializer s = 
      new XmlSerializer(typeof(Group));

      // Create the object to serialize.
      Group myGroup = new Group();

      /* Add a string and an integer to the ArrayList returned
         by the ExtraInfo field. */
      myGroup.ExtraInfo = new ArrayList();
      myGroup.ExtraInfo.Add("hello");
      myGroup.ExtraInfo.Add(100);

      // Serialize the object and close the TextWriter.
      s.Serialize(writer,myGroup);
      writer.Close();
   }
}

Imports System.Collections
Imports System.IO
Imports System.Xml.Serialization


Public Class Group
    ' Apply two XmlElementAttributes to the field. Set the DataType
    ' to string and int to allow the ArrayList to accept
    ' both types. The Namespace is also set to different values
    ' for each type. 
    <XmlElement(DataType := "string", _
        Type := GetType(String), _
        Namespace := "http://www.cpandl.com"), _
     XmlElement(DataType := "int", _                    
        Type := GetType(Integer), _
        Namespace := "http://www.cohowinery.com")> _
    Public ExtraInfo As ArrayList
End Class


Public Class Run
    
    Public Shared Sub Main()
        Dim test As New Run()
        test.SerializeObject("ElementTypes.xml")
    End Sub    
    
    Public Sub SerializeObject(filename As String)
        ' A TextWriter is needed to write the file.
        Dim writer As New StreamWriter(filename)
        
        ' Create the XmlSerializer using the XmlAttributeOverrides.
        Dim s As New XmlSerializer(GetType(Group))
        
        ' Create the object to serialize.
        Dim myGroup As New Group()
        
        ' Add a string and an integer to the ArrayList returned
        ' by the ExtraInfo field. 
        myGroup.ExtraInfo = New ArrayList()
        myGroup.ExtraInfo.Add("hello")
        myGroup.ExtraInfo.Add(100)
        
        ' Serialize the object and close the TextWriter.
        s.Serialize(writer, myGroup)
        writer.Close()
    End Sub
End Class

Hinweise

In der folgenden Tabelle sind die einfachen XML-Schema Datentypen mit their.NET-Entsprechungen aufgelistet.The following table lists the XML Schema simple data types with their.NET equivalents.

Verwenden Sie für das base64Binary XML hexBinary -Schema und die Datentypen ein Byte Array von-Strukturen, XmlElementAttribute und wenden DataType Sie ein-Array mit dem auf "base64Binary" oder "hexBinary" festgelegten nach Bedarf an.For the XML Schema base64Binary and hexBinary data types, use an array of Byte structures, and apply a XmlElementAttribute with the DataType set to "base64Binary" or "hexBinary", as appropriate. Verwenden Sie für das time XML date -Schema und die Daten DateTime Typen den-Typ XmlElementAttribute , und DataType wenden Sie das mit dem Satz auf "Date" oder "Time" an.For the XML Schema time and date data types, use the DateTime type and apply the XmlElementAttribute with the DataType set to "date" or "time".

Wenden Sie für jeden XML-Schematyp, der einer Zeichenfolge XmlElementAttribute zugeordnet ist DataType , das-Objekt mit der-Eigenschaft auf den XML-Schematyp fest.For every XML Schema type that is mapped to a string, apply the XmlElementAttribute with its DataType property set to the XML Schema type. Es ist möglich, dass dadurch das Serialisierungsformat geändert werden kann, nicht nur das Schema für den Member.It is possible that this can change the serialization format, not only the schema for the member.

Weitere Informationen zu XML-Datentypen finden Sie im World Wide Web Consortium Dokument mit dem Namen XML Schema Part 2: Datatypes.For more information about XML data types, see the World Wide Web Consortium document named XML Schema Part 2: Datatypes.

XSD-DatentypXSD data type	.NET-Datentyp.NET data type
anyURIanyURI	String
base64Binarybase64Binary	Array von Byte ObjektenArray of Byte objects
booleanboolean	Boolean
bytebyte	SByte
datedate	DateTime
dateTimedateTime	DateTime
decimaldecimal	Decimal
doubledouble	Double
ENTITYENTITY	String
KLEINSTUNTERNEHMENENTITIES	String
floatfloat	Single
gDaygDay	String
gMonthgMonth	String
gMonthDaygMonthDay	String
gYeargYear	String
gYearMonthgYearMonth	String
hexBinaryhexBinary	Array von Byte ObjektenArray of Byte objects
IdID	String
IDREFIDREF	String
IDREFSIDREFS	String
intint	Int32
Ganze Zahlinteger	String
languagelanguage	String
longlong	Int64
nameName	String
NCNameNCName	String
negativeIntegernegativeInteger	String
NMTOKENNMTOKEN	String
NMTOKENSNMTOKENS	String
normalizedStringnormalizedString	String
nonNegativeIntegernonNegativeInteger	String
nonPositiveIntegernonPositiveInteger	String
NOTATIONNOTATION	String
positiveIntegerpositiveInteger	String
QNameQName	XmlQualifiedName
durationduration	String
stringstring	String
shortshort	Int16
Uhrzeittime	DateTime
tokentoken	String
unsignedByteunsignedByte	Byte
unsignedIntunsignedInt	UInt32
unsignedLongunsignedLong	UInt64
unsignedShortunsignedShort	UInt16

Gilt für: