C#

int lastLength = this.textBoxConsole.Text.Length;
int currentLength = this.textBoxConsole.Text.Length;
while (SerialBootload.HexFile.downloadCompleted == false)
{
    this.textBoxConsole.Text.Remove((lastLength - 1), (currentLength - lastLength));
    //this.textBoxConsole.Text.Remove(lastLength - 1);
    this.textBoxConsole.AppendText(SerialBootloadMethods.SerialBootload.SendProgram(1, 2));
    currentLength = this.textBoxConsole.Text.Length;
}

private void button4_Click(object sender, EventArgs e)
        {
            // Get the strings from the textboxes
            string strOrigFile = "Files\\testfile.txt";
            string strDestFile = "C:\\Symbiosys_Backup\\" + (System.IO.Path.GetFullPath(strOrigFile)).Replace(@"C:\", @"");

            // Get the filename only
            string strFileName = System.IO.Path.GetFileName(strOrigFile);

            // Determine the full destination path including filename
            //string strDestFile = System.IO.Path.Combine(strDestLoc, strFileName);

            // Copy the file
            MessageBox.Show("Original File: " + strOrigFile + "\r\nDestination File: " + strDestFile);
            System.IO.File.Copy(strOrigFile, strDestFile, true);
        }