My class read binary files in listBox (Visual C++)

read_Files.h


#pragma once

using namespace System::IO;
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;

ref class read_Files
{
private:
BinaryReader^ date_file;
ListBox^ lb;
String^ name_my_file;
FileStream^ my_file;
System::Single date;
public:
read_Files(String^ name_file,ListBox^ lbox);
void Read();
};

read_Files.cpp

#include "StdAfx.h"

#include "read_Files.h"

read_Files::read_Files(String^ name_file,ListBox^ lbox)

{

name_my_file=name_file;

lb=lbox;

}

void read_Files::Read()

{

 my_file=File::OpenRead(name_my_file);

 date_file=gcnew BinaryReader(my_file,System::Text::Encoding::Default);

 do

 {

date=date_file->ReadSingle();

lb->Items->Add(date.ToString());

 }while(date_file->PeekChar()!=-1);

 my_file->Close();

}