XmlSerializer.FromTypes(Type[]) Metoda

Definicja

Przestrzeń nazw:

System.Xml.Serialization

Zestawy:

netstandard.dll, System.Xml.XmlSerializer.dll

Źródło:

XmlSerializer.cs

Zwraca tablicę obiektów utworzonych XmlSerializer na podstawie tablicy typów.

public:
 static cli::array <System::Xml::Serialization::XmlSerializer ^> ^ FromTypes(cli::array <Type ^> ^ types);

[System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XML serializer relies on dynamic code generation which is not available with Ahead of Time compilation")]
[System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")]
public static System.Xml.Serialization.XmlSerializer?[] FromTypes(Type[]? types);

[<System.Diagnostics.CodeAnalysis.RequiresDynamicCode("XML serializer relies on dynamic code generation which is not available with Ahead of Time compilation")>]
[<System.Diagnostics.CodeAnalysis.RequiresUnreferencedCode("Members from serialized types may be trimmed if not referenced directly")>]
static member FromTypes : Type[] -> System.Xml.Serialization.XmlSerializer[]

Public Shared Function FromTypes (types As Type()) As XmlSerializer()

Parametry

types

Type[]

Tablica Type obiektów.

Zwraca

XmlSerializer[]

Tablica XmlSerializer obiektów.

Atrybuty

RequiresDynamicCodeAttribute RequiresUnreferencedCodeAttribute

Przykłady

W poniższym przykładzie użyto FromTypes metody , aby zwrócić tablicę XmlSerializer obiektów. Kod zawiera trzy definicje klas, które są używane do tworzenia tablicy Type obiektów.

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

/* Three classes are included here. Each one will
be used to create three XmlSerializer objects. */

public class Instrument
{
   public string InstrumentName;
}

public class Player
{
   public string PlayerName;
}

public class Piece
{
   public string PieceName;
}

public class Test
{
   public static void Main()
   {
      Test t = new();
      t.GetSerializers();
   }

   public void GetSerializers()
   {
      // Create an array of types.
      Type[] types = [typeof(Instrument), typeof(Player), typeof(Piece)];

      // Create an array for XmlSerializer objects.
      XmlSerializer[] serializers = new XmlSerializer[3];
      serializers = XmlSerializer.FromTypes(types);
      // Create one Instrument and serialize it.
      Instrument i = new Instrument();
      i.InstrumentName = "Piano";
      // Create a TextWriter to write with.
      TextWriter writer = new StreamWriter("Inst.xml");
      serializers[0].Serialize(writer, i);
      writer.Close();
   }
}

Imports System.IO
Imports System.Xml.Serialization

' Three classes are included here. Each one will
' be used to create three XmlSerializer objects.

Public Class Instrument
    Public InstrumentName As String
End Class

Public Class Player
    Public PlayerName As String
End Class

Public Class Piece
    Public PieceName As String
End Class

Public Class Test

    Public Shared Sub Main()
        Dim t As New Test()
        t.GetSerializers()
    End Sub

    Public Sub GetSerializers()
        ' Create an array of types.
        Dim types(3) As Type
        types(0) = GetType(Instrument)
        types(1) = GetType(Player)
        types(2) = GetType(Piece)

        ' Create an array for XmlSerializer objects.
        Dim serializers(3) As XmlSerializer
        serializers = XmlSerializer.FromTypes(types)
        ' Create one Instrument and serialize it.
        Dim i As New Instrument()
        i.InstrumentName = "Piano"
        ' Create a TextWriter to write with.
        Dim writer As New StreamWriter("Inst.xml")
        serializers(0).Serialize(writer, i)
        writer.Close()
    End Sub
End Class

Uwagi

Metoda FromTypes umożliwia efektywne tworzenie tablicy XmlSerializer obiektów do przetwarzania tablicy Type obiektów. Zaleca się jednak buforowanie zwracanych serializatorów w przypadku powtarzających się wywołań do tej metody.

Zobacz też

• XmlAttributes
• Wprowadzenie do serializacji XML
• Instrukcje: określanie alternatywnej nazwy elementu dla strumienia XML
• Kontrolowanie serializacji XML przy użyciu atrybutów
• Przykłady serializacji XML
• Narzędzie definicji schematu XML (Xsd.exe)