IXmlLineInfo Interfaz

Definición

Proporciona una interfaz que permite a una clase devolver información de línea y de posición.Provides an interface to enable a class to return line and position information.

public interface class IXmlLineInfo
public interface IXmlLineInfo
type IXmlLineInfo = interface
Public Interface IXmlLineInfo
Derivado

Ejemplos

En el siguiente ejemplo se analiza un fragmento XML.The following example parses an XML fragment. Se muestra cada nodo, incluida su profundidad, número de línea y posición de línea.Each node is displayed, including its depth, line number, and line position.

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   
   // Create the XML fragment to be parsed.
   String^ xmlFrag = "<book>\n"
   "<misc>\n"
   "<style>paperback</style>\n"
   "<pages>240</pages>\n"
   "</misc>\n"
   "</book>\n";
   
   // Create the XmlNamespaceManager.
   XmlNamespaceManager^ nsmgr = gcnew XmlNamespaceManager( gcnew NameTable );
   
   // Create the XmlParserContext.
   XmlParserContext^ context = gcnew XmlParserContext( nullptr,nsmgr,nullptr,XmlSpace::None );
   
   // Create the reader.
   XmlValidatingReader^ reader = gcnew XmlValidatingReader( xmlFrag,XmlNodeType::Element,context );
   IXmlLineInfo^ lineInfo = (dynamic_cast<IXmlLineInfo^>(reader));
   if ( lineInfo->HasLineInfo() )
   {
      
      // Parse the XML and display each node.
      while ( reader->Read() )
      {
         switch ( reader->NodeType )
         {
            case XmlNodeType::Element:
               Console::Write( " {0} {1}, {2}  ", reader->Depth, lineInfo->LineNumber, lineInfo->LinePosition );
               Console::WriteLine( "< {0}>", reader->Name );
               break;

            case XmlNodeType::Text:
               Console::Write( " {0} {1}, {2}  ", reader->Depth, lineInfo->LineNumber, lineInfo->LinePosition );
               Console::WriteLine( " {0}", reader->Value );
               break;

            case XmlNodeType::EndElement:
               Console::Write( " {0} {1}, {2}  ", reader->Depth, lineInfo->LineNumber, lineInfo->LinePosition );
               Console::WriteLine( "</ {0}>", reader->Name );
               break;
         }
      }
   }

   
   // Close the reader.
   reader->Close();
}

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

public class Sample{

  public static void Main(){

    // Create the XML fragment to be parsed.
    string xmlFrag  = 
    @"<book>
           <misc>
              <style>paperback</style>
              <pages>240</pages>
           </misc>
        </book>
    ";

    // Create the XmlNamespaceManager.
    XmlNamespaceManager nsmgr = new XmlNamespaceManager(new NameTable());

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

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

    IXmlLineInfo lineInfo = ((IXmlLineInfo)reader);
    if (lineInfo.HasLineInfo()){
       
      // Parse the XML and display each node.
      while (reader.Read()){
       switch (reader.NodeType){
         case XmlNodeType.Element:
           Console.Write("{0} {1},{2}  ", reader.Depth, lineInfo.LineNumber, lineInfo.LinePosition);
           Console.WriteLine("<{0}>", reader.Name);
           break;
         case XmlNodeType.Text:
           Console.Write("{0} {1},{2}  ", reader.Depth, lineInfo.LineNumber, lineInfo.LinePosition);
           Console.WriteLine("  {0}", reader.Value);
           break;
         case XmlNodeType.EndElement:
           Console.Write("{0} {1},{2}  ", reader.Depth, lineInfo.LineNumber, lineInfo.LinePosition);
           Console.WriteLine("</{0}>", reader.Name);
           break;
       }       
     }           
    }

    // Close the reader.
    reader.Close();       
  }
}
Imports System.IO
Imports System.Xml

public class Sample

  public shared sub Main()

    ' Create the XML fragment to be parsed.
    Dim xmlFrag as string = "<book>" + Chr(10) & _
                            "  <misc>"  + Chr(10) & _
                            "    <style>paperback</style>"  + Chr(10) & _
                            "    <pages>240</pages>" + Chr(10) & _
                            "  </misc>" + Chr(10) & _
                            "</book>"

    ' Create the XmlNamespaceManager.
    Dim nsmgr as XmlNamespaceManager = new XmlNamespaceManager(new NameTable())

    ' Create the XmlParserContext.
    Dim context as XmlParserContext = new XmlParserContext(nothing, nsmgr, nothing, XmlSpace.None)

    ' Create the reader.
    Dim reader as XmlValidatingReader = new XmlValidatingReader(xmlFrag, XmlNodeType.Element, context)

    Dim lineInfo as IXmlLineInfo = CType(reader, IXmlLineInfo)
    if (lineInfo.HasLineInfo())
       
      ' Parse the XML and display each node.
      while (reader.Read())
       select case reader.NodeType
         case XmlNodeType.Element:
           Console.Write("{0} {1},{2}  ", reader.Depth, lineInfo.LineNumber, lineInfo.LinePosition)
           Console.WriteLine("<{0}>", reader.Name)
         case XmlNodeType.Text:
           Console.Write("{0} {1},{2}  ", reader.Depth, lineInfo.LineNumber, lineInfo.LinePosition)
           Console.WriteLine("  {0}", reader.Value)
         case XmlNodeType.EndElement:
           Console.Write("{0} {1},{2}  ", reader.Depth, lineInfo.LineNumber, lineInfo.LinePosition)
           Console.WriteLine("</{0}>", reader.Name)
       end select       
      end while           
    end if

    ' Close the reader.
    reader.Close()     
  
  end sub
end class

Propiedades

LineNumber

Obtiene el número de línea actual.Gets the current line number.

LinePosition

Obtiene la posición de línea actual.Gets the current line position.

Métodos

HasLineInfo()

Obtiene un valor que indica si la clase puede devolver información de línea.Gets a value indicating whether the class can return line information.

Se aplica a