XmlTypeMapping 類別

定義

命名空間:

System.Xml.Serialization

組件:

netstandard.dll, System.Xml.XmlSerializer.dll

來源:

XmlTypeMapping.cs

包含一種類型到另一種類型的映射。

public ref class XmlTypeMapping : System::Xml::Serialization::XmlMapping

public class XmlTypeMapping : System.Xml.Serialization.XmlMapping

type XmlTypeMapping = class
    inherit XmlMapping

Public Class XmlTypeMapping
Inherits XmlMapping

繼承

Object

XmlMapping

XmlTypeMapping

範例

以下範例序列化一個名為 Transportation 的類別實例，該類別包含一個名為 Vehicle的欄位。 SoapElementAttribute A 應用於該場。 當欄位被序列化時，XML 元素名稱為「Wheels」而非「Vehicle」。 該SerializeOverride方法創建 aSoapElementAttribute，並將 a SoapAttributes 的性質設定SoapElement為 SoapElementAttribute。 SoapAttributes將 加入 ，SoapAttributeOverrides用來產生 XmlTypeMapping。 XmlSerializer An 是用 XmlTypeMapping構造的，類別的實例Transportation也會再次序列化。 由於 SoapElementAttribute 是用來覆寫序列化，因此產生的 XML 元素名稱現在改為「Truck」而非「Wheels」。

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

備註

此 XmlTypeMapping 類別用於將物件序列化為編碼的 SOAP XML。 所得的 XML 符合萬 維網聯盟 文件《簡易物件存取協定（SOAP）1.1》第 5 節。 透過呼叫ImportTypeMapping類別的方法SoapReflectionImporter來建立 。XmlTypeMapping 使用 來 XmlTypeMapping 建構該 XmlSerializer 類別的實例。 要控制序列化，請使用 「控制編碼 SOAP 序列化的屬性」中列出的屬性之一。

屬性

名稱	Description
ElementName	此 API 支援此產品基礎結構，但無法直接用於程式碼之中。 取得映射元素的名稱。 (繼承來源 XmlMapping)
Namespace	此 API 支援此產品基礎結構，但無法直接用於程式碼之中。 取得映射元素的命名空間。 (繼承來源 XmlMapping)
TypeFullName	完全限定的型別名稱，包含命名空間（或多個命名空間）與型別。
TypeName	取得映射物件的類型名稱。
XsdElementName	此 API 支援此產品基礎結構，但無法直接用於程式碼之中。 取得映射中 XSD 元素的名稱。 (繼承來源 XmlMapping)
XsdTypeName	取得映射物件的 XML 元素名稱。
XsdTypeNamespace	取得映射物件的 XML 命名空間。

方法

名稱	Description
Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetHashCode()	做為預設哈希函式。 (繼承來源 Object)
GetType()	取得目前實例的 Type。 (繼承來源 Object)
MemberwiseClone()	建立目前 Object的淺層複本。 (繼承來源 Object)
SetKey(String)	此 API 支援此產品基礎結構，但無法直接用於程式碼之中。 設定用來查找映射的金鑰。 (繼承來源 XmlMapping)
ToString()	傳回表示目前 物件的字串。 (繼承來源 Object)

另請參閱

• XML 序列化簡介
• 如何：將物件串行化為 SOAP-Encoded XML 數據流
• 用於控制編碼 SOAP 序列化的屬性
• XML 序列化範例