XmlDocument Konstruktor

Definisi

Ruang nama:

System.Xml

Rakitan:

netstandard.dll, System.Xml.ReaderWriter.dll

Menginisialisasi instans baru dari kelas XmlDocument.

Overload

Nama	Deskripsi
XmlDocument()	Menginisialisasi instans baru dari kelas XmlDocument.
XmlDocument(XmlImplementation)	Menginisialisasi instans XmlDocument baru kelas dengan yang ditentukan XmlImplementation.
XmlDocument(XmlNameTable)	Menginisialisasi instans XmlDocument baru kelas dengan yang ditentukan XmlNameTable.

XmlDocument()

Sumber:

XmlDocument.cs

Menginisialisasi instans baru dari kelas XmlDocument.

public:
 XmlDocument();

public XmlDocument();

Public Sub New ()

Contoh

Berikut ini adalah contoh validasi waktu muat. Validasi XmlReader definisi jenis dokumen (DTD) diteruskan ke Load metode dan ValidationEventHandler disediakan untuk memberi tahu pengguna tentang kesalahan validasi apa pun. Dalam contoh ini ditemukan kesalahan validasi, tetapi dokumen masih dimuat. Atau, Anda dapat menentukan validasi XmlReader untuk melempar pengecualian dan menghentikan proses beban ketika kesalahan validasi ditemukan dengan tidak menentukan ValidationEventHandler. Untuk informasi selengkapnya tentang memvalidasi data XML, lihat bagian Keterangan dari XmlReader halaman referensi.

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

namespace Microsoft.Samples.Xml
{
    sealed class XmlDocumentSample
    {
        private XmlDocumentSample() { }

        static XmlReader reader;
        static String filename = "bookdtd.xml";

        public static void Main()
        {

            ValidationEventHandler eventHandler = new ValidationEventHandler(XmlDocumentSample.ValidationCallback);

            try
            {
                // Create the validating reader and specify DTD validation.
                XmlReaderSettings settings = new XmlReaderSettings();
                settings.DtdProcessing = DtdProcessing.Parse;
                settings.ValidationType = ValidationType.DTD;
                settings.ValidationEventHandler += eventHandler;

                reader = XmlReader.Create(filename, settings);

                // Pass the validating reader to the XML document.
                // Validation fails due to an undefined attribute, but the
                // data is still loaded into the document.
                XmlDocument doc = new XmlDocument();
                doc.Load(reader);
                Console.WriteLine(doc.OuterXml);
            }
            finally
            {
                if (reader != null)
                    reader.Close();
            }
        }

        // Display the validation error.
        private static void ValidationCallback(object sender, ValidationEventArgs args)
        {
            Console.WriteLine("Validation error loading: {0}", filename);
            Console.WriteLine(args.Message);
        }
    }
}

Option Explicit On
Option Strict On

Imports System.Xml
Imports System.Xml.Schema

Namespace Microsoft.Samples.Xml

    NotInheritable Class XmlDocumentSample

        Private Sub New()

        End Sub

        Shared reader As XmlReader
        Shared filename As String = "bookdtd.xml"

        Public Shared Sub Main()


            Dim eventHandler As New ValidationEventHandler(AddressOf XmlDocumentSample.ValidationCallback)

            Try

                ' Create the validating reader and specify DTD validation.
                Dim settings As New XmlReaderSettings()
                settings.DtdProcessing = DtdProcessing.Parse
                settings.ValidationType = ValidationType.DTD
                AddHandler settings.ValidationEventHandler, eventHandler

                reader = XmlReader.Create(filename, settings)

                ' Pass the validating reader to the XML document.
                ' Validation fails due to an undefined attribute, but the 
                ' data is still loaded into the document.
                Dim doc As New XmlDocument()
                doc.Load(reader)
                Console.WriteLine(doc.OuterXml)
            
            Finally

                If Not (reader Is Nothing) Then
                    reader.Close()
                End If

            End Try

        End Sub

        ' Display the validation error.
        Private Shared Sub ValidationCallback(ByVal sender As Object, ByVal args As ValidationEventArgs)
            Console.WriteLine("Validation error loading: {0}", filename)
            Console.WriteLine(args.Message)
        End Sub

    End Class
End Namespace

Contohnya menggunakan bookDTD.xml file sebagai input.

<!DOCTYPE bookstore [
  <!ELEMENT bookstore (book)*> 
  <!ELEMENT book (title,author,price)>
  <!ATTLIST book genre CDATA #REQUIRED>
  <!ELEMENT title (#PCDATA)>
  <!ELEMENT author (#PCDATA)>
  <!ELEMENT price (#PCDATA)>]>
<bookstore>
  <book genre="fantasy"  ISBN="2-3631-4">
    <title>Oberon's Legacy</title>
    <author>Corets, Eva</author>
    <price>5.95</price>
  </book>
</bookstore>

Lihat juga

• Load(String)
• LoadXml(String)

XmlDocument(XmlImplementation)

Sumber:

XmlDocument.cs

Menginisialisasi instans XmlDocument baru kelas dengan yang ditentukan XmlImplementation.

protected public:
 XmlDocument(System::Xml::XmlImplementation ^ imp);

protected internal XmlDocument(System.Xml.XmlImplementation imp);

new System.Xml.XmlDocument : System.Xml.XmlImplementation -> System.Xml.XmlDocument

Protected Friend Sub New (imp As XmlImplementation)

Parameter

imp

XmlImplementation

XmlImplementation yang digunakan.

XmlDocument(XmlNameTable)

Sumber:

XmlDocument.cs

Menginisialisasi instans XmlDocument baru kelas dengan yang ditentukan XmlNameTable.

public:
 XmlDocument(System::Xml::XmlNameTable ^ nt);

public XmlDocument(System.Xml.XmlNameTable nt);

new System.Xml.XmlDocument : System.Xml.XmlNameTable -> System.Xml.XmlDocument

Public Sub New (nt As XmlNameTable)

Parameter

nt

XmlNameTable

XmlNameTable yang digunakan.