ExportOptions 類別

定義

命名空間:

System.Runtime.Serialization

組件:

System.Runtime.Serialization.Xml.dll

來源:

ExportOptions.cs

表示 XsdDataContractExporter 可以設定的選項。

public ref class ExportOptions

public class ExportOptions

type ExportOptions = class

Public Class ExportOptions

繼承

Object

ExportOptions

範例

下列範例會建立 ExportOptions 類別的執行個體，並將型別 (Possessions) 新增至 KnownTypes 屬性所傳回的集合。

XsdDataContractExporter 接著會匯出型別結構描述，包括加入至集合的 Possessions 型別。

using System;
using System.Xml;
using System.Runtime.Serialization;
using System.Xml.Schema;

public class Program
{
    public static void Main()
    {
        try
        {
            ExportXSD();
        }
        catch (Exception exc)
        {
            Console.WriteLine("Message: {0} StackTrace:{1}", exc.Message, exc.StackTrace);
        }
        finally
        {
            Console.ReadLine();
        }
    }

    static void ExportXSD()
    {
        XsdDataContractExporter exporter = new XsdDataContractExporter();
        if (exporter.CanExport(typeof(Employee)))
        {
            exporter.Export(typeof(Employee));
            Console.WriteLine("number of schemas: {0}", exporter.Schemas.Count);
            Console.WriteLine();
            XmlSchemaSet mySchemas = exporter.Schemas;

            XmlQualifiedName XmlNameValue = exporter.GetRootElementName(typeof(Employee));
            string EmployeeNameSpace = XmlNameValue.Namespace;

            foreach (XmlSchema schema in mySchemas.Schemas(EmployeeNameSpace))
            {
                schema.Write(Console.Out);
            }
        }
    }

    static void GetXmlElementName()
    {
        XsdDataContractExporter myExporter = new XsdDataContractExporter();
        XmlQualifiedName xmlElementName =myExporter.GetRootElementName(typeof(Employee));
        Console.WriteLine("Namespace: {0}", xmlElementName.Namespace);
        Console.WriteLine("Name: {0}", xmlElementName.Name);
        Console.WriteLine("IsEmpty: {0}", xmlElementName.IsEmpty);
    }

    [DataContract(Namespace = "www.Contoso.com/Examples/")]
    public class Employee
    {
        [DataMember]
        public string EmployeeName;
        [DataMember]
        private string ID;
    }
}

Imports System.Collections
Imports System.Xml
Imports System.Runtime.Serialization
Imports System.Xml.Schema

Public Class Program
    Public Shared Sub Main() 
        Try
            ExportXSD()
        Catch exc As Exception
            Console.WriteLine("Message: {0} StackTrace:{1}", exc.Message, exc.StackTrace)
        Finally
            Console.ReadLine()
        End Try
    
    End Sub 
    
    
    Shared Sub ExportXSD() 

        Dim exporter As New XsdDataContractExporter()

        ' Use the ExportOptions to add the Possessions type to the 
        ' collection of KnownTypes. 
        Dim eOptions As New ExportOptions()
        eOptions.KnownTypes.Add(GetType(Possessions))        
        exporter.Options = eOptions

        If exporter.CanExport(GetType(Employee)) Then
            exporter.Export(GetType(Employee))
            Console.WriteLine("number of schemas: {0}", exporter.Schemas.Count)
            Console.WriteLine()
            Dim mySchemas As XmlSchemaSet = exporter.Schemas
            
            Dim XmlNameValue As XmlQualifiedName = _
               exporter.GetRootElementName(GetType(Employee))
            Dim EmployeeNameSpace As String = XmlNameValue.Namespace
            
            Dim schema As XmlSchema
            For Each schema In  mySchemas.Schemas(EmployeeNameSpace)
                schema.Write(Console.Out)
            Next schema
        End If
    
    End Sub 
    
    
    Shared Sub GetXmlElementName() 
        Dim myExporter As New XsdDataContractExporter()
        Dim xmlElementName As XmlQualifiedName = myExporter. _
            GetRootElementName(GetType(Employee))
        Console.WriteLine("Namespace: {0}", xmlElementName.Namespace)
        Console.WriteLine("Name: {0}", xmlElementName.Name)
        Console.WriteLine("IsEmpty: {0}", xmlElementName.IsEmpty)
    
    End Sub 
    
    <DataContract([Namespace] := "www.Contoso.com/Examples/")>  _
    Public Class Employee

        <DataMember()>  _
        Public EmployeeName As String
        <DataMember()>  _
        Private ID As String
        ' This member may return a Possessions type.
        <DataMember> _
        public Miscellaneous As Hashtable 

    End Class 

    <DataContract> _
    Public Class Possessions

        <DataMember> _
        Public ItemName As String
    End Class

End Class

備註

XsdDataContractExporter 可用來從型別或組件產生 XSD 結構描述。 您也可以使用 XsdDataContractImporter 從架構檔產生 .NET Framework 程式代碼。

如需匯入和匯出架構的詳細資訊，請參閱從類別匯入和匯出架構和匯出架構。

KnownTypes 會使用 DataContractSerializer 屬性來包含可在物件圖形中讀取的型別。 如需數據合約和已知型別的詳細資訊，請參閱 數據合約已知型別。

如需資料合約的詳細資訊，請參閱使用資料合約。

建構函式

ExportOptions()

初始化 ExportOptions 類別的新執行個體。

屬性

DataContractSurrogate	取得或設定序列化代理。
KnownTypes	取得型別集合，這些型別可能會在序列化或還原序列化期間遇到。

方法

Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetHashCode()	做為預設雜湊函式。 (繼承來源 Object)
GetType()	取得目前執行個體的 Type。 (繼承來源 Object)
MemberwiseClone()	建立目前 Object 的淺層複製。 (繼承來源 Object)
ToString()	傳回代表目前物件的字串。 (繼承來源 Object)

另請參閱

• XsdDataContractImporter
• ExportOptions
• DataContractSerializer
• 結構描述匯入和匯出
• 匯入架構以產生類別
• 從類別導出架構
• 資料合約已知型別
• 使用資料合約