IXmlLineInfo Interface

Provides an interface to enable a class to return line and position information.

Namespace: System.Xml
Assembly: System.Xml (in system.xml.dll)

'Declaration
Public Interface IXmlLineInfo
'Usage
Dim instance As IXmlLineInfo

public interface IXmlLineInfo
public interface IXmlLineInfo

The following example parses an XML fragment. Each node is displayed, including its depth, line number, and line position.

Imports System
Imports System.IO
Imports System.Xml
Imports Microsoft.VisualBasic

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

import System.*;
import System.IO.*;
import System.Xml.*;

public class Sample
{
    public static void main(String[] args)
    {
        // Create the XML fragment to be parsed.
        String xmlFrag = "<book>\n" 
            + "           <misc>\n" 
            + "              <style>paperback</style>\n" 
            + "              <pages>240</pages>\n" 
            + "           </misc>\n" 
            + "        </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.get_NodeType()) {
                    case XmlNodeType.Element :
                        Console.Write("{0} {1},{2}  ", System.Convert.ToString(
                            reader.get_Depth()), System.Convert.ToString(
                            lineInfo.get_LineNumber()), System.Convert.
                            ToString(lineInfo.get_LinePosition()));
                        Console.WriteLine("<{0}>", reader.get_Name());
                        break;
    
                    case XmlNodeType.Text :
                        Console.Write("{0} {1},{2}  ", System.Convert.ToString(
                            reader.get_Depth()), System.Convert.ToString(
                            lineInfo.get_LineNumber()), System.Convert.
                            ToString(lineInfo.get_LinePosition()));
                        Console.WriteLine("  {0}", System.Convert.ToString(
                            reader.get_Value()));
                        break;

                    case XmlNodeType.EndElement :
                        Console.Write("{0} {1},{2}  ", System.Convert.ToString(
                            reader.get_Depth()), System.Convert.ToString(
                            lineInfo.get_LineNumber()), System.Convert.
                            ToString(lineInfo.get_LinePosition()));
                        Console.WriteLine("</{0}>", System.Convert.ToString(
                            reader.get_Name()));
                        break;
                }
            }
        }
        // Close the reader.
        reader.Close();
    } //main
} //Sample

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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