ExportOptions 类

定义

public ref class ExportOptions

public class ExportOptions

type ExportOptions = class

Public Class ExportOptions

继承

Object

ExportOptions

示例

下面的示例创建 ExportOptions 类的实例，并将某种类型 (Possessions) 添加到 KnownTypes 属性返回的集合中。

XsdDataContractExporter 随后会导出这些类型的架构，包括添加到集合中的 Possessions 类型。

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

注解

XsdDataContractExporter 用于从类型或程序集中生成 XSD 架构。 还可以使用 XsdDataContractImporter 从架构文档生成.NET Framework代码。

有关导入和导出架构的详细信息，请参阅 架构导入和导出 和 从类导出架构。

KnownTypes 使用 DataContractSerializer 属性来包含可能在对象图中读取的类型。 有关数据协定和已知类型的详细信息，请参阅 数据协定已知类型。

有关数据协定的详细信息，请参阅使用数据协定。

另请参阅

• XsdDataContractImporter
• ExportOptions
• DataContractSerializer
• 架构导入和导出
• 导入架构以生成类
• 从类导出架构
• 数据协定已知类型
• 使用数据协定