XmlTextReader.LineNumber Property

Definition

Namespace:

System.Xml

Assembly:

System.Xml.ReaderWriter.dll

Source:

XmlTextReader.cs

Gets the current line number.

public:
 property int LineNumber { int get(); };

public int LineNumber { get; }

member this.LineNumber : int

Public ReadOnly Property LineNumber As Integer

Property Value

Int32

The current line number.

Implements

LineNumber

Examples

The following example displays each node 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.
   NameTable^ nt = gcnew NameTable;
   XmlNamespaceManager^ nsmgr = gcnew XmlNamespaceManager( nt );
   
   // Create the XmlParserContext.
   XmlParserContext^ context = gcnew XmlParserContext( nullptr,nsmgr,nullptr,XmlSpace::None );
   
   // Create the reader.
   XmlTextReader^ reader = gcnew XmlTextReader( xmlFrag,XmlNodeType::Element,context );
   
   // Parse the XML and display each node.
   while ( reader->Read() )
   {
      switch ( reader->NodeType )
      {
         case XmlNodeType::Element:
            Console::Write( " {0} {1}, {2}  ", reader->Depth, reader->LineNumber, reader->LinePosition );
            Console::WriteLine( "< {0}>", reader->Name );
            break;

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

         case XmlNodeType::EndElement:
            Console::Write( " {0} {1}, {2}  ", reader->Depth, reader->LineNumber, reader->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.
    NameTable nt = new NameTable();
    XmlNamespaceManager nsmgr = new XmlNamespaceManager(nt);

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

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

    // Parse the XML and display each node.
    while (reader.Read()){
       switch (reader.NodeType){
         case XmlNodeType.Element:
           Console.Write("{0} {1},{2}  ", reader.Depth, reader.LineNumber, reader.LinePosition);
           Console.WriteLine("<{0}>", reader.Name);
           break;
         case XmlNodeType.Text:
           Console.Write("{0} {1},{2}  ", reader.Depth, reader.LineNumber, reader.LinePosition);
           Console.WriteLine("  {0}", reader.Value);
           break;
         case XmlNodeType.EndElement:
           Console.Write("{0} {1},{2}  ", reader.Depth, reader.LineNumber, reader.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 nt as NameTable = new NameTable()
    Dim nsmgr as XmlNamespaceManager = new XmlNamespaceManager(nt)

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

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

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

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

Remarks

Note

Starting with the .NET Framework 2.0, we recommend that you create XmlReader instances by using the XmlReader.Create method to take advantage of new functionality.

This property is most commonly used for error reporting, but can be called at any time. The starting value for this property is 1.

Combined with LinePosition, a value of 1,1 indicates the start of the document.

See also

• XmlReader