Aracılığıyla paylaş


XPathNavigator.ValueType Özellik

Tanım

Geçerli düğümün .NET'ini Type alır.

public:
 virtual property Type ^ ValueType { Type ^ get(); };
public override Type ValueType { get; }
member this.ValueType : Type
Public Overrides ReadOnly Property ValueType As Type

Özellik Değeri

Type

Geçerli düğümün .NET'i Type . String varsayılan değerdir.

Örnekler

Aşağıdaki örnekte, contosoBooks.xml xml dosyası ve contosoBooks.xsd XML Şema tanım dili (XSD) şeması bir XPathNavigator nesne oluşturmak için kullanılır. öğesinin price yazılan değeri özelliği kullanılarak ValueType görüntülenir ve ardından yöntemi kullanılarak ValueAs dize olarak döndürülür.

// Create an XmlReaderSettings object with the contosoBooks.xsd schema.
XmlReaderSettings^ settings = gcnew XmlReaderSettings();
settings->Schemas->Add("http://www.contoso.com/books", "contosoBooks.xsd");
settings->ValidationType = ValidationType::Schema;

// Create an XmlReader object with the contosoBooks.xml file and its schema.
XmlReader^ reader = XmlReader::Create("contosoBooks.xml", settings);

XPathDocument^ document = gcnew XPathDocument(reader);
XPathNavigator^ navigator = document->CreateNavigator();

navigator->MoveToChild("bookstore", "http://www.contoso.com/books");
navigator->MoveToChild("book", "http://www.contoso.com/books");
navigator->MoveToChild("price", "http://www.contoso.com/books");

// Display the current type of the price element.
Console::WriteLine(navigator->ValueType);

// Get the value of the price element as a string and display it.
String^ price = dynamic_cast<String^>(navigator->ValueAs(String::typeid));
Console::WriteLine(price);
// Create an XmlReaderSettings object with the contosoBooks.xsd schema.
XmlReaderSettings settings = new XmlReaderSettings();
settings.Schemas.Add("http://www.contoso.com/books", "contosoBooks.xsd");
settings.ValidationType = ValidationType.Schema;

// Create an XmlReader object with the contosoBooks.xml file and its schema.
XmlReader reader = XmlReader.Create("contosoBooks.xml", settings);

XPathDocument document = new XPathDocument(reader);
XPathNavigator navigator = document.CreateNavigator();

navigator.MoveToChild("bookstore", "http://www.contoso.com/books");
navigator.MoveToChild("book", "http://www.contoso.com/books");
navigator.MoveToChild("price", "http://www.contoso.com/books");

// Display the current type of the price element.
Console.WriteLine(navigator.ValueType);

// Get the value of the price element as a string and display it.
string price = navigator.ValueAs(typeof(string)) as string;
Console.WriteLine(price);
' Create an XmlReaderSettings object with the contosoBooks.xsd schema.
Dim settings As XmlReaderSettings = New XmlReaderSettings()
settings.Schemas.Add("http://www.contoso.com/books", "contosoBooks.xsd")
settings.ValidationType = ValidationType.Schema

' Create an XmlReader object with the contosoBooks.xml file and its schema.
Dim reader As XmlReader = XmlReader.Create("contosoBooks.xml", settings)

Dim document As XPathDocument = New XPathDocument(reader)
Dim navigator As XPathNavigator = document.CreateNavigator()

navigator.MoveToChild("bookstore", "http://www.contoso.com/books")
navigator.MoveToChild("book", "http://www.contoso.com/books")
navigator.MoveToChild("price", "http://www.contoso.com/books")

' Display the current type of the price element.
Console.WriteLine(navigator.ValueType)

' Get the value of the price element as a string and display it.
Dim price As String = navigator.ValueAs(GetType(String))
Console.WriteLine(price)

Örnek, dosyayı giriş olarak alır contosoBooks.xml .

<?xml version="1.0" encoding="utf-8" ?>  
<bookstore xmlns="http://www.contoso.com/books">  
    <book genre="autobiography" publicationdate="1981-03-22" 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="1967-11-17" 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="1991-02-15" ISBN="1-861001-57-6">  
        <title>The Gorgias</title>  
        <author>  
            <name>Plato</name>  
        </author>  
        <price>9.99</price>  
    </book>  
</bookstore>  

Örnek ayrıca giriş olarak öğesini contosoBooks.xsd alır.

<?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:date" use="required" />  
                        <xs:attribute name="ISBN" type="xs:string" use="required" />  
                    </xs:complexType>  
                </xs:element>  
            </xs:sequence>  
        </xs:complexType>  
    </xs:element>  
</xs:schema>  

Açıklamalar

özelliği, ValueType geçerli düğümün yazılan değerinin .NET Type değerini alır.

Örneğin, türündeki xs:int bir öğe varsayılan olarak bir ValueType Int32 öğesine sahip olabilir. Ancak, ValueType veya Doublegibi Int16 ile eşlenebilen xs:int geçerli türlerden herhangi biri olabilir.

Bir düğümün türü yoksa, bu, düğümün türündeki ek açıklamaya eşdeğerdir xdt:untypedAtomic. Bu durumda, ValueType özelliği düğüm için bir dize döndürür. Daha fazla bilgi için bkz. System.Xml Sınıflarında Tür Desteği.

Şunlara uygulanır