XmlReaderSettings.Schemas 屬性

定義

命名空間:

System.Xml

組件:

System.Xml.ReaderWriter.dll

來源:

XmlReaderSettings.cs

取得或設定要在執行結構描述驗證時使用的 XmlSchemaSet。

public:
 property System::Xml::Schema::XmlSchemaSet ^ Schemas { System::Xml::Schema::XmlSchemaSet ^ get(); void set(System::Xml::Schema::XmlSchemaSet ^ value); };

public System.Xml.Schema.XmlSchemaSet Schemas { get; set; }

member this.Schemas : System.Xml.Schema.XmlSchemaSet with get, set

Public Property Schemas As XmlSchemaSet

屬性值

XmlSchemaSet

執行結構描述驗證時使用的XmlSchemaSet。 預設為空的 XmlSchemaSet 物件。

範例

下列範例會 XmlReaderSettings 使用 物件和 XmlReader.Create 方法，將架構與 XML 檔產生關聯。 架構會新增至 Schemas 對象的屬性 XmlReaderSettings 。 屬性的值 Schemas 是 XmlSchemaSet 物件。 架構是用來驗證 XML 檔是否符合架構內容模型。 架構驗證錯誤和警告是由 ValidationEventHandler 物件中 XmlReaderSettings 定義的 來處理。

#using <System.Xml.dll>

using namespace System;
using namespace System::Xml;
using namespace System::Xml::Schema;

static void booksSettingsValidationEventHandler( Object^ /*sender*/, ValidationEventArgs^ e )
{
   if ( e->Severity == XmlSeverityType::Warning )
   {
      Console::Write( L"WARNING: " );
      Console::WriteLine( e->Message );
   }
   else
   if ( e->Severity == XmlSeverityType::Error )
   {
      Console::Write( L"ERROR: " );
      Console::WriteLine( e->Message );
   }
}

int main()
{
   XmlReaderSettings^ booksSettings = gcnew XmlReaderSettings;
   booksSettings->Schemas->Add( L"http://www.contoso.com/books", L"books.xsd" );
   booksSettings->ValidationType = ValidationType::Schema;
   booksSettings->ValidationEventHandler += gcnew ValidationEventHandler( booksSettingsValidationEventHandler );
   XmlReader^ books = XmlReader::Create( L"books.xml", booksSettings );
   while ( books->Read() )
   {}

   return 0;
}

using System;
using System.Xml;
using System.Xml.Schema;

class XmlSchemaSetExample
{
    static void Main()
    {
        XmlReaderSettings booksSettings = new XmlReaderSettings();
        booksSettings.Schemas.Add("http://www.contoso.com/books", "books.xsd");
        booksSettings.ValidationType = ValidationType.Schema;
        booksSettings.ValidationEventHandler += new ValidationEventHandler(booksSettingsValidationEventHandler);

        XmlReader books = XmlReader.Create("books.xml", booksSettings);

        while (books.Read()) { }
    }

    static void booksSettingsValidationEventHandler(object sender, ValidationEventArgs e)
    {
        if (e.Severity == XmlSeverityType.Warning)
        {
            Console.Write("WARNING: ");
            Console.WriteLine(e.Message);
        }
        else if (e.Severity == XmlSeverityType.Error)
        {
            Console.Write("ERROR: ");
            Console.WriteLine(e.Message);
        }
    }
}

Imports System.Xml
Imports System.Xml.Schema

Class XmlSchemaSetExample

    Shared Sub Main()

        Dim booksSettings As XmlReaderSettings = New XmlReaderSettings()
        booksSettings.Schemas.Add("http://www.contoso.com/books", "books.xsd")
        booksSettings.ValidationType = ValidationType.Schema
        AddHandler booksSettings.ValidationEventHandler, New ValidationEventHandler(AddressOf booksSettingsValidationEventHandler)

        Dim books As XmlReader = XmlReader.Create("books.xml", booksSettings)

        While books.Read()

        End While

    End Sub

    Shared Sub booksSettingsValidationEventHandler(ByVal sender As Object, ByVal e As ValidationEventArgs)

        If e.Severity = XmlSeverityType.Warning Then
            Console.Write("WARNING: ")
            Console.WriteLine(e.Message)

        ElseIf e.Severity = XmlSeverityType.Error Then
            Console.Write("ERROR: ")
            Console.WriteLine(e.Message)
        End If

    End Sub

End Class

此範例會使用 books.xml 檔案作為輸入。

<bookstore xmlns="http://www.contoso.com/books">
  <book genre="autobiography" publicationdate="1981" ISBN="1-861003-11-0">
    <title>The Autobiography of Benjamin Franklin</title>
    <author>
      <first-name>Benjamin</first-name>
      <last-name>Franklin</last-name>
    </author>
    <price>8.99</price>
  </book>
  <book genre="novel" publicationdate="1967" ISBN="0-201-63361-2">
    <title>The Confidence Man</title>
    <author>
      <first-name>Herman</first-name>
      <last-name>Melville</last-name>
    </author>
    <price>11.99</price>
  </book>
  <book genre="philosophy" publicationdate="1991" ISBN="1-861001-57-6">
    <title>The Gorgias</title>
    <author>
      <name>Plato</name>
    </author>
    <price>9.99</price>
  </book>
</bookstore>

此範例使用 books.xsd 檔案做為輸入。

<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.contoso.com/books" xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:element name="bookstore">
        <xs:complexType>
            <xs:sequence>
                <xs:element maxOccurs="unbounded" name="book">
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element name="title" type="xs:string" />
                            <xs:element name="author">
                                <xs:complexType>
                                    <xs:sequence>
                                        <xs:element minOccurs="0" name="name" type="xs:string" />
                                        <xs:element minOccurs="0" name="first-name" type="xs:string" />
                                        <xs:element minOccurs="0" name="last-name" type="xs:string" />
                                    </xs:sequence>
                                </xs:complexType>
                            </xs:element>
                            <xs:element name="price" type="xs:decimal" />
                        </xs:sequence>
                        <xs:attribute name="genre" type="xs:string" use="required" />
                        <xs:attribute name="publicationdate" type="xs:unsignedShort" use="required" />
                        <xs:attribute name="ISBN" type="xs:string" use="required" />
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>

備註

如需此 API 的詳細資訊，請參閱 XmlReaderSettings.Schemas 的補充 API 備註。

另請參閱

• XmlReader
• Create(String)