Visual C++ .NET/XML/XmlWriter
Содержание
Output xml start element and end element
<source lang="csharp">
- include "stdafx.h"
- using <system.xml.dll>
using namespace System; using namespace System::Xml; void main() {
XmlReader ^reader;
XmlWriter ^writer;
try
{
reader = XmlReader::Create("a.xml");
XmlWriterSettings ^settings = gcnew XmlWriterSettings();
settings->Indent = true;
settings->IndentChars = (" ");
writer = XmlWriter::Create("New.xml", settings);
while (reader->Read())
{
switch (reader->NodeType)
{
case XmlNodeType::Comment:
writer->WriteComment(reader->Value);
break;
case XmlNodeType::Element:
writer->WriteStartElement(reader->Name);
writer->WriteAttributes(reader, false);
if (reader->IsEmptyElement)
writer->WriteEndElement();
break;
case XmlNodeType::EndElement:
writer->WriteEndElement();
if (reader->Name->Equals("Name"))
{
writer->WriteStartElement("A");
writer->WriteString("False");
writer->WriteEndElement();
}
break;
case XmlNodeType::Text:
writer->WriteString(reader->Value);
break;
case XmlNodeType::XmlDeclaration:
writer->WriteStartDocument();
break;
}
}
writer->Flush();
}
catch (Exception ^e)
{
Console::WriteLine("XML Update Aborted -- {0}", e->Message);
}
finally
{
if (writer->WriteState != WriteState::Closed)
{
writer->Close();
}
if (reader->ReadState != ReadState::Closed)
{
reader->Close();
}
}
}
</source>
Output xml with indent
<source lang="csharp">
- include "stdafx.h"
- using <system.xml.dll>
using namespace System; using namespace System::Xml; void main() {
XmlReader ^reader;
XmlWriter ^writer;
try
{
reader = XmlReader::Create("a.xml");
XmlWriterSettings ^settings = gcnew XmlWriterSettings();
settings->Indent = true;
settings->IndentChars = (" ");
writer = XmlWriter::Create("New.xml", settings);
while (reader->Read())
{
switch (reader->NodeType)
{
case XmlNodeType::Comment:
writer->WriteComment(reader->Value);
break;
case XmlNodeType::Element:
writer->WriteStartElement(reader->Name);
writer->WriteAttributes(reader, false);
if (reader->IsEmptyElement)
writer->WriteEndElement();
break;
case XmlNodeType::EndElement:
writer->WriteEndElement();
if (reader->Name->Equals("Name"))
{
writer->WriteStartElement("A");
writer->WriteString("False");
writer->WriteEndElement();
}
break;
case XmlNodeType::Text:
writer->WriteString(reader->Value);
break;
case XmlNodeType::XmlDeclaration:
writer->WriteStartDocument();
break;
}
}
writer->Flush();
}
catch (Exception ^e)
{
Console::WriteLine("XML Update Aborted -- {0}", e->Message);
}
finally
{
if (writer->WriteState != WriteState::Closed)
{
writer->Close();
}
if (reader->ReadState != ReadState::Closed)
{
reader->Close();
}
}
}
</source>
Update XML
<source lang="csharp">
- include "stdafx.h"
- using <system.xml.dll>
using namespace System; using namespace System::Xml; void main() {
XmlReader ^reader;
XmlWriter ^writer;
try
{
reader = XmlReader::Create("a.xml");
XmlWriterSettings ^settings = gcnew XmlWriterSettings();
settings->Indent = true;
settings->IndentChars = (" ");
writer = XmlWriter::Create("New.xml", settings);
while (reader->Read())
{
switch (reader->NodeType)
{
case XmlNodeType::Comment:
writer->WriteComment(reader->Value);
break;
case XmlNodeType::Element:
writer->WriteStartElement(reader->Name);
writer->WriteAttributes(reader, false);
if (reader->IsEmptyElement)
writer->WriteEndElement();
break;
case XmlNodeType::EndElement:
writer->WriteEndElement();
if (reader->Name->Equals("Name"))
{
writer->WriteStartElement("A");
writer->WriteString("False");
writer->WriteEndElement();
}
break;
case XmlNodeType::Text:
writer->WriteString(reader->Value);
break;
case XmlNodeType::XmlDeclaration:
writer->WriteStartDocument();
break;
}
}
writer->Flush();
}
catch (Exception ^e)
{
Console::WriteLine("XML Update Aborted -- {0}", e->Message);
}
finally
{
if (writer->WriteState != WriteState::Closed)
{
writer->Close();
}
if (reader->ReadState != ReadState::Closed)
{
reader->Close();
}
}
}
</source>
Write XML out
<source lang="csharp">
- include "stdafx.h"
- using <system.xml.dll>
using namespace System; using namespace System::Xml; void main() {
XmlWriter ^writer;
try
{
XmlWriterSettings ^settings = gcnew XmlWriterSettings();
settings->Indent = true;
settings->IndentChars = (" ");
settings->NewLineOnAttributes = true;
writer = XmlWriter::Create("G.xml", settings);
writer->WriteStartDocument();
writer->WriteStartElement("M");
writer->WriteComment("P");
writer->WriteStartElement("M");
writer->WriteStartElement("N");
writer->WriteString("G");
writer->WriteEndElement();
writer->WriteStartElement("H");
writer->WriteAttributeString("D", "1d8");
writer->WriteAttributeString("D1", "4");
writer->WriteEndElement();
writer->WriteEndDocument();
writer->Flush();
}
catch (Exception ^e)
{
Console::WriteLine("XML Writer Aborted -- {0}", e->Message);
}
finally
{
if (writer->WriteState != WriteState::Closed)
{
writer->Close();
}
}
}
</source>
