XmlEnumAttribute コンストラクタ ()
アセンブリ: System.Xml (system.xml.dll 内)



Food と FoodType という名前の 2 つのクラスをシリアル化する例を次に示します。FoodType クラスには、オーバーライドされた 2 つの列挙体が含まれています。この例では、それぞれの列挙体について XmlEnumAttribute オブジェクトが作成され、そのオブジェクトが XmlAttributes オブジェクトの XmlEnum プロパティに割り当てられます。次に、XmlAttributes オブジェクトを XmlAttributeOverrides オブジェクトに追加し、これを使用して XmlSerializer を作成します。
Imports System 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
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); } }
#using <System.Xml.dll> #using <System.dll> using namespace System; using namespace System::IO; using namespace System::Xml; using namespace System::Xml::Serialization; public enum class FoodType { // Subsequent code overrides these enumerations. Low, High }; // This is the class that will be serialized. public ref class Food { public: FoodType Type; }; // Return an XmlSerializer used for overriding. XmlSerializer^ CreateOverrider() { // Create the XmlOverrides and XmlAttributes objects. XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides; XmlAttributes^ xAttrs = gcnew XmlAttributes; // Add an XmlEnumAttribute for the FoodType.Low enumeration. XmlEnumAttribute^ xEnum = gcnew XmlEnumAttribute; xEnum->Name = "Cold"; xAttrs->XmlEnum = xEnum; xOver->Add( FoodType::typeid, "Low", xAttrs ); // Add an XmlEnumAttribute for the FoodType.High enumeration. xAttrs = gcnew XmlAttributes; xEnum = gcnew XmlEnumAttribute; xEnum->Name = "Hot"; xAttrs->XmlEnum = xEnum; xOver->Add( FoodType::typeid, "High", xAttrs ); // Create the XmlSerializer, and return it. return gcnew XmlSerializer( Food::typeid,xOver ); } void SerializeObject( String^ filename ) { // Create an instance of the XmlSerializer class. XmlSerializer^ mySerializer = CreateOverrider(); // Writing the file requires a TextWriter. TextWriter^ writer = gcnew StreamWriter( filename ); // Create an instance of the class that will be serialized. Food^ myFood = gcnew Food; // Set the object properties. myFood->Type = FoodType::High; // Serialize the class, and close the TextWriter. mySerializer->Serialize( writer, myFood ); writer->Close(); } void DeserializeObject( String^ filename ) { XmlSerializer^ mySerializer = CreateOverrider(); FileStream^ fs = gcnew FileStream( filename,FileMode::Open ); Food^ myFood = dynamic_cast<Food^>(mySerializer->Deserialize( fs )); Console::WriteLine( myFood->Type ); } int main() { SerializeObject( "OverrideEnum.xml" ); DeserializeObject( "OverrideEnum.xml" ); }
import System.*; import System.IO.*; import System.Xml.*; import System.Xml.Serialization.*; // This is the class that will be serialized. public class Food { public FoodType type; Food() { type = new FoodType(); } //Food } //Food public class FoodType { public int member; FoodType() { member = 0; } //FoodType public int get_member() { return member; } //get_member public void set_member(int n) { member = n; } //set_member public String getMemberType() { if (member == 0) { return "low"; } else { return "high"; } } //getMemberType public static int low = 0; public static int high = 1; } //FoodType public class Run { public static void main(String[] args) { Run test = new Run(); test.SerializeObject("OverrideEnum.xml"); test.DeserializeObject("OverrideEnum.xml"); } //main // 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. XmlEnumAttribute xEnum = new XmlEnumAttribute(); xEnum.set_Name("Cold"); xAttrs.set_XmlEnum(xEnum); xOver.Add(FoodType.class.ToType(), "low", xAttrs); // Add an XmlEnumAttribute for the FoodType.high. xAttrs = new XmlAttributes(); xEnum = new XmlEnumAttribute(); xEnum.set_Name("Hot"); xAttrs.set_XmlEnum(xEnum); xOver.Add(FoodType.class.ToType(), "high", xAttrs); // Create the XmlSerializer, and return it. return new XmlSerializer(Food.class.ToType(), xOver); } //CreateOverrider 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.set_member(FoodType.high); // Serialize the class, and close the TextWriter. mySerializer.Serialize(writer, myFood); writer.Close(); } //SerializeObject 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.getMemberType()); } //DeserializeObject } //Run

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


XmlEnumAttribute コンストラクタ (String)
アセンブリ: System.Xml (system.xml.dll 内)



XmlEnumAttribute を列挙体のメンバに適用する例を次に示します。XmlSerializer がこの列挙体に対応する XML データを生成する場合は、Name プロパティの値に適合するようにデータを生成します。
Public Enum EmployeeStatus <XmlEnumAttribute("Single")> One <XmlEnumAttribute("Double")> Two <XmlEnumAttribute("Triple")> Three End Enum
public enum EmployeeStatus { [XmlEnum("Single")] One, [XmlEnum("Double")] Two, [XmlEnum("Triple")] Three }

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


XmlEnumAttribute コンストラクタ

名前 | 説明 |
---|---|
XmlEnumAttribute () | XmlEnumAttribute クラスの新しいインスタンスを初期化します。 .NET Compact Framework によってサポートされています。 |
XmlEnumAttribute (String) | XmlSerializer が生成する (列挙体をシリアル化する場合) または認識する (列挙体を逆シリアル化する場合) XML 値を指定して、XmlEnumAttribute クラスの新しいインスタンスを初期化します。 .NET Compact Framework によってサポートされています。 |

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