IXmlLineInfo 接口
提供一个接口，使类可以返回行和位置信息。
**命名空间:**System.Xml
**程序集:**System.Xml（在 system.xml.dll 中）
语法
声明
Public Interface IXmlLineInfo
用法
Dim instance As IXmlLineInfo
public interface IXmlLineInfo
public interface class IXmlLineInfo
public interface IXmlLineInfo
public interface IXmlLineInfo
示例
下面的示例分析 XML 片段。显示每个节点，包括其深度、行号和行位置。
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 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();
}
}
#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();
}
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
平台
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
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
.NET Compact Framework
受以下版本支持：2.0、1.0