XmlElementAttribute.Type Egenskap

public:
 property Type ^ Type { Type ^ get(); void set(Type ^ value); };

public Type Type { get; set; }

public Type? Type { get; set; }

member this.Type : Type with get, set

Public Property Type As Type

Egenskapsvärde

Medlemmens Type .

Exempel

I följande exempel används egenskapen Type för att ange ett härlett objekt för en XmlElementAttribute. Exemplet använder också tre instanser av fältet XmlElementAttribute som returnerar en ArrayList. Varje instans anger en typ som tillåts i fältet.

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

public class Group
{
   [XmlElement(typeof(Manager))]
   public Employee [] Staff;

   [XmlElement (typeof(int)),
   XmlElement (typeof(string)),
   XmlElement (typeof(DateTime))]
   public ArrayList ExtraInfo;
}

public class Employee
{
   public string Name;
}

public class Manager:Employee
{
   public int Level;
}

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

   public void SerializeObject(string filename)
   {
      // Create an XmlSerializer instance.
      XmlSerializer xSer =
      new XmlSerializer(typeof(Group));

      // Create object and serialize it.
      Group myGroup = new Group();

      Manager e1 = new Manager();
      e1.Name = "Manager1";
      Manager m1 =  new Manager();
      m1.Name = "Manager2";
      m1.Level = 4;

      Employee[] emps = {e1, m1};
      myGroup.Staff = emps;

      myGroup.ExtraInfo = new ArrayList();
      myGroup.ExtraInfo.Add(".NET");
      myGroup.ExtraInfo.Add(42);
      myGroup.ExtraInfo.Add(new DateTime(2001,1,1));

      TextWriter writer = new StreamWriter(filename);
      xSer.Serialize(writer, myGroup);
      writer.Close();
   }
}

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


Public Class Group
    <XmlElement(GetType(Manager))> _    
    Public Staff() As Employee
    
    <XmlElement(GetType(Integer)), _
     XmlElement(GetType(String)), _
     XmlElement(GetType(DateTime))> _
    Public ExtraInfo As ArrayList
End Class

Public Class Employee
    Public Name As String
End Class

Public Class Manager
    Inherits Employee
    Public Level As Integer
End Class

Public Class Run
    
    Public Shared Sub Main()
        Dim test As New Run()
        test.SerializeObject("TypeEx.xml")
    End Sub    
    
    Public Sub SerializeObject(filename As String)
        ' Create an XmlSerializer instance.
        Dim xSer As New XmlSerializer(GetType(Group))
        
        ' Create an object and serialize it.
        Dim myGroup As New Group()
        
        Dim e1 As New Manager()
        e1.Name = "Manager1"
        Dim m1 As New Manager()
        m1.Name = "Manager2"
        m1.Level = 4
        
        Dim emps() As Employee = {e1, m1}
        myGroup.Staff = emps
        
        myGroup.ExtraInfo = New ArrayList()
        myGroup.ExtraInfo.Add(".NET")
        myGroup.ExtraInfo.Add(42)
        myGroup.ExtraInfo.Add(New DateTime(2001, 1, 1))
        
        Dim writer As New StreamWriter(filename)
        xSer.Serialize(writer, myGroup)
        writer.Close()
    End Sub
End Class

Kommentarer

Använd egenskapen Type för att ange en härledd typ för ett fält eller en egenskap.

Om ett fält eller en egenskap returnerar en ArrayListkan du använda flera instanser av XmlElementAttribute medlemmen. För varje instans anger du Type egenskapen till en typ av objekt som kan infogas i matrisen.