How to retrive value from CDATA XML using readfile?

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C++

I want to retrive value from XML which data in CDATA form.But I read XML using ReadFile function(this function is mandatory to read file)I cant use any other option to read XML(no DOM and SAX).Its requirement to read xml using READFile only.
once its read and get full xml in form of string and get value of tag which values are in CDATA.

Below is the XML:

<namespace>
	<ns1>
		<ns1name><![CDATA[MyData1</ns1name>
		<class>
			<cs1>
				<cs1name><![CDATA[ComputerSystem</cs1name>
				<property><![CDATA[DomainName@@SystemInfo@@IPAddress@MacAddress
				</property>
			</cs1>
		</class>
	</ns1>
	<ns2>
	<ns2name><![CDATA[MyData2</ns2name>
		<class>
			<cs1>
				<cs1name><![CDATA[OtherDetails</cs1name>
				<property><![CDATA[Caption@#@Description@#@ElementName@#@InstallDate</property>
			</cs1>
		</class>
	</ns2>
</namespace>

output:
Count no of child in XML??
CDATA value inside tags.

What I have tried:

// XMLSample.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<windows.h>
#include <tchar.h>
#include <stdio.h>
#include <strsafe.h>
#include<string>

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
	wchar_t AppPath[MAX_PATH] = { 0 };
	wchar_t XMLfilePath[MAX_PATH] = { 0 };
	wchar_t *pwszFindChar = NULL;
	//stDBStart	structDBStart = { 0 };

	GetModuleFileName(NULL,AppPath, MAX_PATH);

	pwszFindChar = wcsrchr(AppPath, L'\\');
	if (NULL == pwszFindChar)
	{
		return 0;
	}
	*pwszFindChar = NULL;

	lstrcpyW(XMLfilePath, AppPath);
	lstrcatW(XMLfilePath,L"\\HyperV.xml");

	DWORD dwIniLen = 0;

	dwIniLen = ::GetCompressedFileSizeW(XMLfilePath, 0);
	dwIniLen *= 2;

	
	HANDLE		hFile = NULL;
	
	DWORD  dwFileSize=0;
	DWORD	dwReadBuffer = 0;
	wchar_t* pszBuffer = { 0 };
	
	hFile = CreateFileW(XMLfilePath,
		GENERIC_READ ,
		FILE_SHARE_READ,
		NULL,
		OPEN_ALWAYS,
		FILE_ATTRIBUTE_NORMAL,
		NULL);

	dwIniLen = ::GetCompressedFileSize(XMLfilePath, 0);
	dwIniLen *= 2;

	//wchar_t* buffer = new wchar_t[dwIniLen];

	pszBuffer = new wchar_t[dwIniLen];
	//wchar_t pszBuffer[dwFileSize] = { '\0' };

	wmemset(pszBuffer, NULL, (dwIniLen));
	::ReadFile(hFile, pszBuffer, dwIniLen, &dwReadBuffer, 0);

	wstring ws(pszBuffer);
	// your new String
	string xmlContent(ws.begin(), ws.end());
	
	/*if (xmlContent.find())*/

	if (0 == dwReadBuffer)
	{
		CloseHandle(hFile);
	}
	else
	{
		
	}



			CloseHandle(hFile);

			return 0;
		

	}