XPathNavigator.MoveToNext Metode

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

public:
 abstract bool MoveToNext();

public abstract bool MoveToNext();

abstract member MoveToNext : unit -> bool

Public MustOverride Function MoveToNext () As Boolean

Mengembalikan

true XPathNavigator jika berhasil berpindah ke simpul saudara berikutnya; jika tidak, jika tidak, false tidak ada lagi saudara kandung atau jika XPathNavigator saat ini diposisikan pada node atribut. Jika false, posisi XPathNavigator tidak berubah.

Contoh

Contoh berikut mengulangi pohon simpul secara rekursif, dan menampilkan informasi tentang elemen dan node teks.

static void XPathNavigatorMethods_MoveToNext()
{

    XPathDocument document = new XPathDocument("books.xml");
    XPathNavigator navigator = document.CreateNavigator();
    XPathNodeIterator nodeset = navigator.Select("descendant::book[author/last-name='Melville']");

    while (nodeset.MoveNext())
    {
        // Clone iterator here when working with it.
        RecursiveWalk(nodeset.Current.Clone());
    }
}

public static void RecursiveWalk(XPathNavigator navigator)
{
    switch (navigator.NodeType)
    {
        case XPathNodeType.Element:
            if (string.IsNullOrEmpty(navigator.Prefix))
                Console.WriteLine("<{0}>", navigator.LocalName);
            else
                Console.Write("<{0}:{1}>", navigator.Prefix, navigator.LocalName);
            Console.WriteLine("\t" + navigator.NamespaceURI);
            break;
        case XPathNodeType.Text:
            Console.WriteLine("\t" + navigator.Value);
            break;
    }

    if (navigator.MoveToFirstChild())
    {
        do
        {
            RecursiveWalk(navigator);
        } while (navigator.MoveToNext());

        navigator.MoveToParent();
        if (navigator.NodeType == XPathNodeType.Element)
            Console.WriteLine("</{0}>", navigator.Name);
    }
    else
    {
        if (navigator.NodeType == XPathNodeType.Element)
        {
            Console.WriteLine("</{0}>", navigator.Name);
        }
    }
}

Shared Sub XPathNavigatorMethods_MoveToNext()

    Dim document As XPathDocument = New XPathDocument("books.xml")
    Dim navigator As XPathNavigator = document.CreateNavigator()
    Dim nodeset As XPathNodeIterator = navigator.Select("descendant::book[author/last-name='Melville']")

    While nodeset.MoveNext()
        ' Clone iterator here when working with it.
        RecursiveWalk(nodeset.Current.Clone())
    End While

End Sub

Shared Sub RecursiveWalk(ByVal navigator As XPathNavigator)

    Select Case navigator.NodeType
        Case XPathNodeType.Element
            If navigator.Prefix = String.Empty Then
                Console.WriteLine("<{0}>", navigator.LocalName)
            Else
                Console.Write("<{0}:{1}>", navigator.Prefix, navigator.LocalName)
                Console.WriteLine(vbTab + navigator.NamespaceURI)
            End If
        Case XPathNodeType.Text
            Console.WriteLine(vbTab + navigator.Value)
    End Select

    If navigator.MoveToFirstChild() Then
        Do
            RecursiveWalk(navigator)
        Loop While (navigator.MoveToNext())

        navigator.MoveToParent()
        If (navigator.NodeType = XPathNodeType.Element) Then
            Console.WriteLine("</{0}>", navigator.Name)
        End If
    Else
        If navigator.NodeType = XPathNodeType.Element Then
            Console.WriteLine("</{0}>", navigator.Name)
        End If
    End If

End Sub

Contoh mengambil books.xml file sebagai input.

<?xml version="1.0" encoding="utf-8" ?>
<bookstore>
    <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>

Lihat juga

• MoveToPrevious()
• MoveToFirst()

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

public:
 virtual bool MoveToNext(System::Xml::XPath::XPathNodeType type);

public virtual bool MoveToNext(System.Xml.XPath.XPathNodeType type);

abstract member MoveToNext : System.Xml.XPath.XPathNodeType -> bool
override this.MoveToNext : System.Xml.XPath.XPathNodeType -> bool

Public Overridable Function MoveToNext (type As XPathNodeType) As Boolean

Parameter

Mengembalikan

true XPathNavigator jika berhasil berpindah ke simpul saudara berikutnya; jika tidak, jika tidak, false tidak ada lagi saudara kandung atau jika XPathNavigator saat ini diposisikan pada node atribut. Jika false, posisi XPathNavigator tidak berubah.

Keterangan

Nilai MoveToNext pengembalian metode tergantung pada XPathNodeType simpul saat ini dan XPathNodeType dari simpul saudara berikutnya untuk dipindahkan.

Tabel berikut ini memperlihatkan simpul yang berbeda XPathNodeType dan simpul saudara yang bisa mereka pindahkan.

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

Sumber:

XPathNavigator.cs

public:
 virtual bool MoveToNext(System::String ^ localName, System::String ^ namespaceURI);

public virtual bool MoveToNext(string localName, string namespaceURI);

abstract member MoveToNext : string * string -> bool
override this.MoveToNext : string * string -> bool

Public Overridable Function MoveToNext (localName As String, namespaceURI As String) As Boolean

Parameter

Mengembalikan

true XPathNavigator jika berhasil berpindah ke simpul saudara berikutnya; false jika tidak ada lagi saudara kandung, atau jika XPathNavigator saat ini diposisikan pada node atribut. Jika false, posisi XPathNavigator tidak berubah.