XmlParserContext Construtores

public:
 XmlParserContext(System::Xml::XmlNameTable ^ nt, System::Xml::XmlNamespaceManager ^ nsMgr, System::String ^ xmlLang, System::Xml::XmlSpace xmlSpace);

public XmlParserContext (System.Xml.XmlNameTable nt, System.Xml.XmlNamespaceManager nsMgr, string xmlLang, System.Xml.XmlSpace xmlSpace);

public XmlParserContext (System.Xml.XmlNameTable? nt, System.Xml.XmlNamespaceManager? nsMgr, string? xmlLang, System.Xml.XmlSpace xmlSpace);

new System.Xml.XmlParserContext : System.Xml.XmlNameTable * System.Xml.XmlNamespaceManager * string * System.Xml.XmlSpace -> System.Xml.XmlParserContext

Public Sub New (nt As XmlNameTable, nsMgr As XmlNamespaceManager, xmlLang As String, xmlSpace As XmlSpace)

Parâmetros

Exceções

Exemplos

O exemplo a seguir lê um fragmento XML. Ele usa um XmlParserContext e seu XmlNamespaceManager para manipular a correspondência de namespace.

using System;
using System.IO;
using System.Xml;

public class Sample
{
    public static void Main()
    {
        XmlTextReader reader = null;

        try
        {
            //Create the XML fragment to be parsed.
            string xmlFrag = "<book> " +
                            "<title>Pride And Prejudice</title>" +
                            "<bk:genre>novel</bk:genre>" +
                            "</book>";

            //Create the XmlNamespaceManager that is used to
            //look up namespace information.
            NameTable nt = new NameTable();
            XmlNamespaceManager nsmgr = new XmlNamespaceManager(nt);
            nsmgr.AddNamespace("bk", "urn:sample");

            //Create the XmlParserContext.
            XmlParserContext context = new XmlParserContext(null, nsmgr, null, XmlSpace.None);

            //Implement the reader.
            reader = new XmlTextReader(xmlFrag, XmlNodeType.Element, context);

            //Parse the XML fragment.  If they exist, display the
            //prefix and namespace URI of each element.
            while (reader.Read())
            {
                if (reader.IsStartElement())
                {
                    if (string.IsNullOrEmpty(reader.Prefix))
                    {
                        Console.WriteLine("<{0}>", reader.LocalName);
                    }
                    else
                    {
                        Console.Write("<{0}:{1}>", reader.Prefix, reader.LocalName);
                        Console.WriteLine(" The namespace URI is " + reader.NamespaceURI);
                    }
                }
            }
        }

        finally
        {
            if (reader != null)
                reader.Close();
        }
    }
} // End class

Imports System.IO
Imports System.Xml

Public Class Sample

    Public Shared Sub Main()
        Dim reader As XmlTextReader = Nothing

        Try
            'Create the XML fragment to be parsed.
            Dim xmlFrag As String = "<book> " & _
                                    "<title>Pride And Prejudice</title>" & _
                                    "<bk:genre>novel</bk:genre>" & _
                                    "</book>"

            'Create the XmlNamespaceManager that is used to
            'look up namespace information.
            Dim nt As New NameTable()
            Dim nsmgr As New XmlNamespaceManager(nt)
            nsmgr.AddNamespace("bk", "urn:sample")

            'Create the XmlParserContext.
            Dim context As New XmlParserContext(Nothing, nsmgr, Nothing, XmlSpace.None)

            'Implement the reader. 
            reader = New XmlTextReader(xmlFrag, XmlNodeType.Element, context)

            'Parse the XML fragment.  If they exist, display the   
            'prefix and namespace URI of each element.
            While reader.Read()
                If reader.IsStartElement() Then
                    If reader.Prefix = String.Empty Then
                        Console.WriteLine("<{0}>", reader.LocalName)
                    Else
                        Console.Write("<{0}:{1}>", reader.Prefix, reader.LocalName)
                        Console.WriteLine(" The namespace URI is " & reader.NamespaceURI)
                    End If
                End If
            End While
        Finally
            If Not (reader Is Nothing) Then
                reader.Close()
            End If
        End Try
    End Sub
End Class

public:
 XmlParserContext(System::Xml::XmlNameTable ^ nt, System::Xml::XmlNamespaceManager ^ nsMgr, System::String ^ xmlLang, System::Xml::XmlSpace xmlSpace, System::Text::Encoding ^ enc);

public XmlParserContext (System.Xml.XmlNameTable nt, System.Xml.XmlNamespaceManager nsMgr, string xmlLang, System.Xml.XmlSpace xmlSpace, System.Text.Encoding enc);

public XmlParserContext (System.Xml.XmlNameTable? nt, System.Xml.XmlNamespaceManager? nsMgr, string? xmlLang, System.Xml.XmlSpace xmlSpace, System.Text.Encoding? enc);

new System.Xml.XmlParserContext : System.Xml.XmlNameTable * System.Xml.XmlNamespaceManager * string * System.Xml.XmlSpace * System.Text.Encoding -> System.Xml.XmlParserContext

Public Sub New (nt As XmlNameTable, nsMgr As XmlNamespaceManager, xmlLang As String, xmlSpace As XmlSpace, enc As Encoding)

Parâmetros

Exceções

public:
 XmlParserContext(System::Xml::XmlNameTable ^ nt, System::Xml::XmlNamespaceManager ^ nsMgr, System::String ^ docTypeName, System::String ^ pubId, System::String ^ sysId, System::String ^ internalSubset, System::String ^ baseURI, System::String ^ xmlLang, System::Xml::XmlSpace xmlSpace);

public XmlParserContext (System.Xml.XmlNameTable nt, System.Xml.XmlNamespaceManager nsMgr, string docTypeName, string pubId, string sysId, string internalSubset, string baseURI, string xmlLang, System.Xml.XmlSpace xmlSpace);

public XmlParserContext (System.Xml.XmlNameTable? nt, System.Xml.XmlNamespaceManager? nsMgr, string? docTypeName, string? pubId, string? sysId, string? internalSubset, string? baseURI, string? xmlLang, System.Xml.XmlSpace xmlSpace);

new System.Xml.XmlParserContext : System.Xml.XmlNameTable * System.Xml.XmlNamespaceManager * string * string * string * string * string * string * System.Xml.XmlSpace -> System.Xml.XmlParserContext

Public Sub New (nt As XmlNameTable, nsMgr As XmlNamespaceManager, docTypeName As String, pubId As String, sysId As String, internalSubset As String, baseURI As String, xmlLang As String, xmlSpace As XmlSpace)

Parâmetros

Exceções

Exemplos

O exemplo a seguir usa um XmlParserContext para ler um fragmento XML.

using System;
using System.IO;
using System.Xml;

public class Sample
{
    public static void Main()
    {
        XmlTextReader reader = null;

        try
        {
            //Create the XML fragment to be parsed.
            string xmlFrag = "<book genre='novel' misc='sale-item &h;'></book>";

            //Create the XmlParserContext. The XmlParserContext provides the
            //necessary DTD information so that the entity reference can be expanded.
            XmlParserContext context;
            string subset = "<!ENTITY h 'hardcover'>";
            context = new XmlParserContext(null, null, "book", null, null, subset, "", "", XmlSpace.None);

            //Create the reader.
            reader = new XmlTextReader(xmlFrag, XmlNodeType.Element, context);

            //Read the all the attributes on the book element.
            reader.MoveToContent();
            while (reader.MoveToNextAttribute())
            {
                Console.WriteLine("{0} = {1}", reader.Name, reader.Value);
            }
        }
        finally
        {
            if (reader != null)
                reader.Close();
        }
    }
} // End class

Option Explicit On
Option Strict On

Imports System.IO
Imports System.Xml

Public Class Sample

    Public Shared Sub Main()
        Dim reader As XmlTextReader = Nothing
        Try
            'Create the XML fragment to be parsed.
            Dim xmlFrag As String = "<book genre='novel' misc='sale-item &h;'></book>"

            'Create the XmlParserContext. The XmlParserContext provides the 
            'necessary DTD information so that the entity reference can be expanded.
            Dim context As XmlParserContext
            Dim subset As String = "<!ENTITY h 'hardcover'>"
            context = New XmlParserContext(Nothing, Nothing, "book", Nothing, Nothing, subset, "", "", XmlSpace.None)

            'Create the reader. 
            reader = New XmlTextReader(xmlFrag, XmlNodeType.Element, context)

            'Read the all the attributes on the book element.
            reader.MoveToContent()
            While reader.MoveToNextAttribute()
                Console.WriteLine("{0} = {1}", reader.Name, reader.Value)
            End While
        Finally
            If Not (reader Is Nothing) Then
                reader.Close()
            End If
        End Try
    End Sub
End Class

Comentários

Este construtor fornece todas as DocumentType informações necessárias por XmlValidatingReader. Se isso XmlParserContext for passado para um XmlTextReader, todas as informações de DTD serão ignoradas.

Se você passar um DTD como o internalSubset, o DTD será usado para resolução de entidade, não para validação de documento.

public:
 XmlParserContext(System::Xml::XmlNameTable ^ nt, System::Xml::XmlNamespaceManager ^ nsMgr, System::String ^ docTypeName, System::String ^ pubId, System::String ^ sysId, System::String ^ internalSubset, System::String ^ baseURI, System::String ^ xmlLang, System::Xml::XmlSpace xmlSpace, System::Text::Encoding ^ enc);

public XmlParserContext (System.Xml.XmlNameTable nt, System.Xml.XmlNamespaceManager nsMgr, string docTypeName, string pubId, string sysId, string internalSubset, string baseURI, string xmlLang, System.Xml.XmlSpace xmlSpace, System.Text.Encoding enc);

public XmlParserContext (System.Xml.XmlNameTable? nt, System.Xml.XmlNamespaceManager? nsMgr, string? docTypeName, string? pubId, string? sysId, string? internalSubset, string? baseURI, string? xmlLang, System.Xml.XmlSpace xmlSpace, System.Text.Encoding? enc);

new System.Xml.XmlParserContext : System.Xml.XmlNameTable * System.Xml.XmlNamespaceManager * string * string * string * string * string * string * System.Xml.XmlSpace * System.Text.Encoding -> System.Xml.XmlParserContext

Public Sub New (nt As XmlNameTable, nsMgr As XmlNamespaceManager, docTypeName As String, pubId As String, sysId As String, internalSubset As String, baseURI As String, xmlLang As String, xmlSpace As XmlSpace, enc As Encoding)

Parâmetros

Exceções