#include "stdafx.h"
using namespace System.IO;

bool WipeFile (String * inFilePath, int nWipes )
{
    bool status = false;
    FileStream * sw;
    Byte Patterns[];
    __int64 fileLength=0;
    int patIndex =0;

    if (nWipes<1) nWipes =1;
    else if (nWipes>200) nWipes=200;

    try {
        // Open the file with exclusive access

        sw = new FileStream (inFilePath, FileMode::Open ,
                 FileAccess::Write, FileShare::None);

        Patterns = new Byte[nWipes] ;
        // Create a pattern index


        for (patIndex = 0; patIndex < 
            Patterns->Count ; patIndex++) 
            Patterns[patIndex] = patIndex;

        fileLength = sw->Length ;
        for (patIndex=0; patIndex < 
            Patterns->Count ; patIndex++) 
        {
            sw->Seek (0,SeekOrigin::Begin );
            for (int i =0; i <= fileLength ;i++)
                sw->Write (Patterns,patIndex,1);
          }
        sw->Flush ();
        sw->Close ();

        // Safe to remove the file now

        File::Delete (inFilePath);
        status = true;
        }
        catch (Exception * e) 
        {
            Console::Writeline (e->ToString());
        }
    return status;
}

// using namespace System.IO;   Wrong
using namespace System::IO;  // Correct