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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

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
#using <mscorlib.dll>
#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  = 
      S"<book>\n"
      S"<misc>\n"
      S"<style>paperback</style>\n"
      S"<pages>240</pages>\n"
      S"</misc>\n"
      S"</book>\n";

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

   // Create the XmlParserContext.
   XmlParserContext* context = new XmlParserContext(0, nsmgr, 0, XmlSpace::None);

   // Create the reader.
   XmlValidatingReader* reader = new 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(S" {0} {1}, {2}  ", __box(reader -> Depth), __box(lineInfo -> LineNumber), __box(lineInfo -> LinePosition) );
            Console::WriteLine(S"< {0}>", reader -> Name);
            break;
         case XmlNodeType::Text:
            Console::Write(S" {0} {1}, {2}  ", __box(reader -> Depth), __box(lineInfo -> LineNumber), __box(lineInfo -> LinePosition) );
            Console::WriteLine(S" {0}", reader -> Value);
            break;
         case XmlNodeType::EndElement:
            Console::Write(S" {0} {1}, {2}  ", __box(reader -> Depth), __box(lineInfo -> LineNumber), __box(lineInfo -> LinePosition) );
            Console::WriteLine(S"</ {0}>", reader -> Name);
            break;
         }       
      }           
   }
   // Close the reader.
   reader -> Close();       
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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