unable to use the getline function

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C++

Hi all,

I m trying to read a file line by line in a wonsole application (supporting MFC).
I created a function :

int  LineToStruct(CString TransLog)
{
    string ReadLine;
    ifstream infile(TransLog);
    while(!infile.eof())
    {
        getline(infile, ReadLine);
    }
    infile.close();
    return 0;
}

when I compile it says : error C2065: 'getline' : undeclared identifier

I already included those headers :

#include "stdafx.h"

#include <iostream>
#include <fstream>
#include <string.h>
using namespace std;

I looked in the internet but i had no clue to resolve that !!!