fstream не читает строки из файла!

bool TStudent::_savegridtofile(TStudent student)
{
    ofstream file;
    file.open("student.arc", ios::binary | ios::ate);
    file.seekp(0);
    file.write((char *) &student, sizeof(TStudent));
    file.close();
    return true;
}

TStudent TStudent::_loadfiletogrid(int rec_num)
{
    TStudent student;
    
    fstream file("student.arc", ios::in | ios::out | ios::binary);
    if (file == NULL) {return student;}
    file.seekp(0);
    file.getline((char *)&student, sizeof(TStudent));
    //file.read((char *) &student, sizeof(TStudent));
    file.close();
 
    return student;
}

#pragma once
#include "string"
using namespace std;
 
 
class TPeople {
public:
    int num;
    string name;
    string fam;
    string otch;
    string date_b;
    string sex;
    string family;
 
//  TPeople();      //  конструктор
//  ~TPeople();     //  деструктор
};
 
class TStudent: public TPeople {
public:
    //TStudent(); //~TStudent();
 
    int course;
    string date_in;
    string student_num;
 
    bool _savegridtofile(TStudent student);
    TStudent _loadfiletogrid(int i);
};

#include "stdafx.h"
#include "stud.h"
#include "string.h"
#include "fstream"
 
 
using namespace std;
using namespace System;
 
bool TStudent::_savegridtofile(TStudent student) {
    
    ofstream file;
 
    file.open("student.arc", ios::binary | ios::ate);
    file.seekp(0);
    file.write((char *) &student.Info, sizeof(TStudent::Info));
    file.write((char *) &student.StudentInfo, sizeof(TStudent::StudentInfo));
    file.close();
 
    return true;
}
 
TStudent TStudent::_loadfiletogrid(int rec_num) {
    
    TStudent student;
    
    fstream file("student.arc", fstream::in | fstream::out | fstream::binary);
    if (file == NULL) {return student;}
    file.seekg(0);
    //file.getline((char *)&student.Info, sizeof(TStudent::Info));
    file.read((char *)&student.Info, sizeof(TStudent::Info));
    file.read((char *)&student.StudentInfo, sizeof(TStudent::StudentInfo));
    file.close();
 
    return student;
}

#pragma once
#include "string"
 
using namespace std;
 
 
//------------ список структур для классов ------------------------
//-----------------------------------------------------------------
struct TInfo {                     // структура для классса TPeople
    string name;
    string fam;
    string otch;
    string date_b;
    string sex;
    string family;
    int num;
};
 
struct TStudentInfo {              // структура для класса TStudent
    int course;
    string date_in;
    string student_num;
};
 
struct TSubject {                  // структура для класса TStudent
    int student_num;
    string subject;
    int estimation;
    int course;
};
 
//-----------------------------------------------------------------
 
class TPeople {
public:
    TInfo Info;
};
 
 
 
class TStudent: public TPeople {
public:
    TStudentInfo StudentInfo;
 
    bool _savegridtofile(TStudent student);
    TStudent _loadfiletogrid(int i);
};