XmlEnumAttribute Konstruktoren

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

public:
 XmlEnumAttribute();

public XmlEnumAttribute();

Public Sub New ()

Beispiele

Im folgenden Beispiel werden zwei Klassen mit dem Namen Food und FoodTypedem Namen serialisiert. Die FoodType Klasse enthält zwei Enumerationen, die überschrieben werden, und für jede Enumeration erstellt das Beispiel ein XmlEnumAttribute Objekt, das der XmlEnum Eigenschaft eines XmlAttributes Objekts zugewiesen ist. Anschließend wird das XmlAttributes Objekt einem XmlAttributeOverrides Objekt hinzugefügt, das zum Erstellen eines XmlSerializerObjekts verwendet wird.

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

// This is the class that will be serialized.
public class Food
{
   public FoodType Type;
}

public enum FoodType
{
   // Subsequent code overrides these enumerations.
   Low,
   High
}

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

   // Return an XmlSerializer used for overriding.
   public XmlSerializer CreateOverrider()
   {
      // Create the XmlOverrides and XmlAttributes objects.
      XmlAttributeOverrides xOver = new XmlAttributeOverrides();
      XmlAttributes xAttrs = new XmlAttributes();

      // Add an XmlEnumAttribute for the FoodType.Low enumeration.
      XmlEnumAttribute xEnum = new XmlEnumAttribute();
      xEnum.Name = "Cold";
      xAttrs.XmlEnum = xEnum;
      xOver.Add(typeof(FoodType), "Low", xAttrs);

      // Add an XmlEnumAttribute for the FoodType.High enumeration.
      xAttrs = new XmlAttributes();
      xEnum = new XmlEnumAttribute();
      xEnum.Name = "Hot";
      xAttrs.XmlEnum = xEnum;
      xOver.Add(typeof(FoodType), "High", xAttrs);

      // Create the XmlSerializer, and return it.
      return new XmlSerializer(typeof(Food), xOver);
   }

   public void SerializeObject(string filename)
   {
      // Create an instance of the XmlSerializer class.
      XmlSerializer mySerializer =  CreateOverrider();
      // Writing the file requires a TextWriter.
      TextWriter writer = new StreamWriter(filename);

      // Create an instance of the class that will be serialized.
      Food myFood = new Food();

      // Set the object properties.
      myFood.Type = FoodType.High;

      // Serialize the class, and close the TextWriter.
      mySerializer.Serialize(writer, myFood);
      writer.Close();
   }

   public void DeserializeObject(string filename)
   {
      XmlSerializer mySerializer = CreateOverrider();
      FileStream fs = new FileStream(filename, FileMode.Open);
      Food myFood = (Food)
      mySerializer.Deserialize(fs);

      Console.WriteLine(myFood.Type);
   }
}

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


' This is the class that will be serialized.
Public Class Food
    Public Type As FoodType
End Class

Public Enum FoodType
    ' Subsequent code overrides these enumerations.
    Low
    High
End Enum



Public Class Run
    
    Public Shared Sub Main()
        Dim test As New Run()
        test.SerializeObject("OverrideEnum.xml")
        test.DeserializeObject("OverrideEnum.xml")
    End Sub    
    
    ' Return an XmlSerializer used for overriding. 
    Public Function CreateOverrider() As XmlSerializer
        ' Create the XmlOverrides and XmlAttributes objects.
        Dim xOver As New XmlAttributeOverrides()
        Dim xAttrs As New XmlAttributes()
        
        ' Add an XmlEnumAttribute for the FoodType.Low enumeration.
        Dim xEnum As New XmlEnumAttribute()
        xEnum.Name = "Cold"
        xAttrs.XmlEnum = xEnum
        xOver.Add(GetType(FoodType), "Low", xAttrs)
        
        ' Add an XmlEnumAttribute for the FoodType.High enumeration.
        xAttrs = New XmlAttributes()
        xEnum = New XmlEnumAttribute()
        xEnum.Name = "Hot"
        xAttrs.XmlEnum = xEnum
        xOver.Add(GetType(FoodType), "High", xAttrs)
        
        ' Create the XmlSerializer, and return it.
        Return New XmlSerializer(GetType(Food), xOver)
    End Function
    
        
    Public Sub SerializeObject(ByVal filename As String)
        ' Create an instance of the XmlSerializer class.
        Dim mySerializer As XmlSerializer = CreateOverrider()
        ' Writing the file requires a TextWriter.
        Dim writer As New StreamWriter(filename)
        
        ' Create an instance of the class that will be serialized.
        Dim myFood As New Food()
        
        ' Set the object properties.
        myFood.Type = FoodType.High
        
        ' Serialize the class, and close the TextWriter.
        mySerializer.Serialize(writer, myFood)
        writer.Close()
    End Sub
    
    
    Public Sub DeserializeObject(ByVal filename As String)
        Dim mySerializer As XmlSerializer = CreateOverrider()
        Dim fs As New FileStream(filename, FileMode.Open)
        Dim myFood As Food = CType(mySerializer.Deserialize(fs), Food)
        
        Console.WriteLine(myFood.Type)
    End Sub
End Class

Hinweise

Sie können die XmlEnumAttribute vorhandene Enumeration außer Kraft setzen.

Weitere Informationen

• Serialize(TextWriter, Object)
• Deserialize(Stream)
• XmlSerializer

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

Quelle:

XmlEnumAttribute.cs

public:
 XmlEnumAttribute(System::String ^ name);

public XmlEnumAttribute(string name);

public XmlEnumAttribute(string? name);

new System.Xml.Serialization.XmlEnumAttribute : string -> System.Xml.Serialization.XmlEnumAttribute

Public Sub New (name As String)

Parameter

Beispiele

Im folgenden Beispiel wird dies XmlEnumAttribute auf die Member einer Enumeration angewendet. Wenn die XmlSerializer XML-Daten für diese Enumeration generiert werden, entsprechen die Daten den Werten der Name Eigenschaften.

public enum EmployeeStatus
{
   [XmlEnum("Single")]
   One,
   [XmlEnum("Double")]
   Two,
   [XmlEnum("Triple")]
   Three
}

Public Enum EmployeeStatus
   <XmlEnumAttribute("Single")> One
   <XmlEnumAttribute("Double")> Two
   <XmlEnumAttribute("Triple")> Three
End Enum

Hinweise

Weitere Informationen

• Serialize(TextWriter, Object)
• Deserialize(Stream)
• XmlSerializer