Çözüm C# "File İşlemlerinde İşlem Başkası Bir İşlem Tarafından Kullanıldığından..." Hatası

   private void button2_Click(object sender, EventArgs e)
        {
            using (var folderDialog = new FolderBrowserDialog())
            {
                if (folderDialog.ShowDialog() != DialogResult.OK)
                {
                    return;
                }
                var files = Directory.GetFiles(folderDialog.SelectedPath, "*", SearchOption.AllDirectories);
                progressBar1.Maximum = files.Length;
                progressBar1.Value = 0;

                foreach (var filePath in files)
                {
                    using (var md5 = MD5.Create())
                    {
                        using (var fileStream = File.OpenRead(filePath))
                        {
                            var hash = md5.ComputeHash(fileStream);
                            var hashString = BitConverter.ToString(hash).Replace("-", "").ToLowerInvariant();

                            if (IsFileInfected(hashString))
                            {
                                ListViewItem item = new ListViewItem(new[] { filePath, "Infected" });
                                listView1.Items.Add(item);

                                if (MessageBox.Show("The file is infected. Do you want to delete it?", "Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
                                {
                                    bool deleted = false;
                                    int retries = 10;
                                    while (!deleted && retries > 0)
                                    {
                                        try
                                        {
                                            File.Delete(filePath);
                                            deleted = true;
                                            MessageBox.Show("The file has been deleted successfully.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
                                        }
                                        catch (IOException ex)
                                        {
                                            retries--;
                                            System.Threading.Thread.Sleep(500);
                                            if (retries == 0)
                                            {
                                                MessageBox.Show("Failed to delete the file. The file is in use by another process. " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                                            }
                                        }
                                        catch (UnauthorizedAccessException ex)
                                        {
                                            MessageBox.Show("Failed to delete the file. You do not have permission to delete this file. " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                                            break;
                                        }
                                        catch (Exception ex)
                                        {
                                            MessageBox.Show("Failed to delete the file. " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                                            break;
                                        }
                                    }
                                }
                            }
                            else
                            {
                                ListViewItem item = new ListViewItem(new[] { filePath, "Clean" });
                                listView2.Items.Add(item);
                            }
                        }
                    }
                    progressBar1.Value++;
                }
            }
            MessageBox.Show("Folder scan complete.");
        }

private void button2_Click(object sender, EventArgs e)
{
    using (var folderDialog = new FolderBrowserDialog())
    {
        if (folderDialog.ShowDialog() != DialogResult.OK)
        {
            return;
        }
        var files = Directory.GetFiles(folderDialog.SelectedPath, "*", SearchOption.AllDirectories);
        progressBar1.Maximum = files.Length;
        progressBar1.Value = 0;

        foreach (var filePath in files)
        {
            using (var md5 = MD5.Create())
            {
                using (var fileStream = File.Open(filePath, FileMode.Open, FileAccess.ReadWrite, FileShare.Delete))
                {
                    var hash = md5.ComputeHash(fileStream);
                    var hashString = BitConverter.ToString(hash).Replace("-", "").ToLowerInvariant();

                    if (IsFileInfected(hashString))
                    {
                        ListViewItem item = new ListViewItem(new[] { filePath, "Infected" });
                        listView1.Items.Add(item);

                        if (MessageBox.Show("The file is infected. Do you want to delete it?", "Warning", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
                        {
                            try
                            {
                                fileStream.Close();
                                File.Delete(filePath);
                                MessageBox.Show("The file has been deleted successfully.", "Success", MessageBoxButtons.OK, MessageBoxIcon.Information);
                            }
                            catch (UnauthorizedAccessException ex)
                            {
                                MessageBox.Show("Failed to delete the file. You do not have permission to delete this file. " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                            }
                            catch (IOException ex)
                            {
                                MessageBox.Show("Failed to delete the file. The file is in use by another process. " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                            }
                            catch (Exception ex)
                            {
                                MessageBox.Show("Failed to delete the file. " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                            }
                        }
                    }
                    else
                    {
                        ListViewItem item = new ListViewItem(new[] { filePath, "Clean" });
                        listView2.Items.Add(item);
                    }
                }
            }
            progressBar1.Value++;
        }
    }
    MessageBox.Show("Folder scan complete.");
}