mCleaner.Helpers.Wipe.WipeFile C# (CSharp) Méthode

        public void WipeFile(string filename, int timesToWrite)
        {
            try
            {
                if (File.Exists(filename))
                {
                    // Set the files attributes to normal in case it's read-only.
                    File.SetAttributes(filename, FileAttributes.Normal);

                    // Calculate the total number of sectors in the file.
                    double sectors = Math.Ceiling(new FileInfo(filename).Length / 512.0);

                    // Create a dummy-buffer the size of a sector.
                    byte[] dummyBuffer = new byte[512];

                    // Create a cryptographic Random Number Generator.
                    // This is what I use to create the garbage data.
                    RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();

                    // Open a FileStream to the file.
                    FileStream inputStream = new FileStream(filename, FileMode.Open);
                    for (int currentPass = 0; currentPass < timesToWrite; currentPass++)
                    {
                        UpdatePassInfo(currentPass + 1, timesToWrite);

                        // Go to the beginning of the stream
                        inputStream.Position = 0;

                        // Loop all sectors
                        for (int sectorsWritten = 0; sectorsWritten < sectors; sectorsWritten++)
                        {
                            UpdateSectorInfo(sectorsWritten + 1, (int)sectors);

                            // Fill the dummy-buffer with random data
                            rng.GetBytes(dummyBuffer);
                            // Write it to the stream
                            inputStream.Write(dummyBuffer, 0, dummyBuffer.Length);
                        }
                    }
                    // Truncate the file to 0 bytes.
                    // This will hide the original file-length if you try to recover the file.
                    inputStream.SetLength(0);
                    // Close the stream.
                    inputStream.Close();

                    // As an extra precaution I change the dates of the file so the
                    // original dates are hidden if you try to recover the file.
                    DateTime dt = new DateTime(2037, 1, 1, 0, 0, 0);
                    File.SetCreationTime(filename, dt);
                    File.SetLastAccessTime(filename, dt);
                    File.SetLastWriteTime(filename, dt);

                    File.SetCreationTimeUtc(filename, dt);
                    File.SetLastAccessTimeUtc(filename, dt);
                    File.SetLastWriteTimeUtc(filename, dt);

                    // Finally, delete the file
                    File.Delete(filename);

                    WipeDone();
                }
            }
            catch (Exception e)
            {
                WipeError(e);
            }
        }

        private void StartShredding()
        {
            btnShreddingEnable = true;
            Wipe wiper = new Wipe();
            wiper.WipeErrorEvent += Wiper_WipeErrorEvent;
            wiper.PassInfoEvent += Wiper_PassInfoEvent;
            wiper.SectorInfoEvent += Wiper_SectorInfoEvent;
            wiper.WipeDoneEvent += Wiper_WipeDoneEvent;
            foreach (Model_Shred MdlShared in ShredFilesCollection)
            {

                string full_param = string.Empty;
                if (MdlShared.FilePath != "Recycle Bin")
                {
                    FileAttributes attr = File.GetAttributes(MdlShared.FilePath);
                    if (attr.HasFlag(FileAttributes.Directory))
                    {
                        this.ProgressText = "Started to Shred Folder" + MdlShared.FilePath + " Please Wait.";
                        foreach (string file in Directory.EnumerateFiles(MdlShared.FilePath, "*.*", SearchOption.AllDirectories))
                        {
                            this.ProgressText = "Started to Shred File " + file + " inside folder " + MdlShared.FilePath +
                                                " Please Wait.";
                            wiper.WipeFile(file, 2);
                        }
                        Directory.Delete(MdlShared.FilePath, true);
                    }
                    else
                    {
                        this.ProgressText = "Started to Shred File " + MdlShared.FilePath + " Please Wait.";
                        wiper.WipeFile(MdlShared.FilePath, 2);
                    }
                }

                this.ProgressIndex++;
            }
            if (btnShredRecycleBinEnable)
            {
                this.ProgressText = "Started to Shreding recyclebin please Wait.";

                Thread.Sleep(2000);
                foreach (string file in Directory.EnumerateFiles("C:\\$RECYCLE.BIN", "*.*", SearchOption.AllDirectories)
                    )
                {
                    this.ProgressText = "Started to Shred File " + file + " please Wait.";
                    wiper.WipeFile(file, 2);
                }
            }


            btnShreddingEnable = true;
            this.ProgressText = "Shredding is done.";
        }