private void ChangeProgress(int progress)
        {
            uploadedLabel.Text = "Uploaded: " + Utils.FormatSize(bytesTransferred) +
                                 " (" + ((double)bytesTransferred * 100 / totalFileSize).ToString("F2") + "%)";
            totalSizeLabel.Text  = "Total Size: " + Utils.FormatSize(totalFileSize);
            speedLabel.Text      = "Speed: " + Utils.FormatSize(bytesPerSecond) + "/s";
            progressUpload.Value = progress;

            if (OSVersion.HasExtendedTaskbar)
            {
                Windows7Taskbar.SetTaskbarProgress(Program.HackerWindow, this.progressUpload);
            }
        }