form1

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace CShrpColorNC
{
    public partial class Form1 : Form
    {
        DateTime m_Form2Start;
        DateTime m_LastProgressCall = DateTime.Now;
        TimeSpan m_totalDif;

        int m_csNumLines = 0;
        string m_csText = "";
        BackgroundWorker backgroundWorker1 = new BackgroundWorker();

        public Form1()
        {
            InitializeComponent();
            InitializeBackgroundWorker();
            backgroundWorker1.WorkerReportsProgress = true;
            backgroundWorker1.WorkerSupportsCancellation = true;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (backgroundWorker1.IsBusy != true)
            {
                m_csText = this.m_bruteView.Text;
                backgroundWorker1.RunWorkerAsync();
            }
            resultLabel.Text = "Started...";
        }

        private void InitializeBackgroundWorker()
        {
            backgroundWorker1.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);
            backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler( backgroundWorker1_RunWorkerCompleted);
            backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler( backgroundWorker1_ProgressChanged);
        }

        // This event handler is where the time-consuming work is done.
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            m_Form2Start= DateTime.Now;
            BackgroundWorker worker = sender as BackgroundWorker;
            ComplexSyntaxer.ComplexSyntaxer cs = new ComplexSyntaxer.ComplexSyntaxer();
            cs.Text = m_csText;
            m_csNumLines = cs.Lines.Length;

            int nStartPos = 0;
            int i = 0;
            int nOriginalPos = cs.SelectionStart;
            while (i < cs.Lines.Length)
            {
                cs.m_strLine = cs.Lines[i];
                cs.m_nLineStart = nStartPos;
                cs.m_nLineEnd = cs.m_nLineStart + cs.m_strLine.Length;
                cs.m_nLineLength = cs.m_nLineEnd - cs.m_nLineStart;

                cs.ProcessLine();
                worker.ReportProgress(i);//(int)(100 * (double)i / cs.Lines.Length));
                i++;

                nStartPos += cs.m_strLine.Length + 1;
            }
            cs.SelectionStart = nOriginalPos;
            m_csText = cs.Rtf;

            TimeSpan total = DateTime.Now.Subtract(m_Form2Start);
            Console.WriteLine("Total Time " + total.ToString());
            Console.WriteLine("Total Time2 " + m_totalDif.ToString());
        }

        // This event handler updates the progress.
        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            TimeSpan difInCalls = DateTime.Now.Subtract(m_LastProgressCall);
            m_LastProgressCall = DateTime.Now;
            m_totalDif = m_totalDif.Add(difInCalls);
            TimeSpan avgDif = new TimeSpan(0, 0, 0, 0, ((int)m_totalDif.TotalMilliseconds / m_csNumLines));
            double totalTime = m_csNumLines * avgDif.TotalSeconds;
            double timeLeft = totalTime - (DateTime.Now.Subtract(m_Form2Start).TotalSeconds);
            Console.WriteLine("TotalEstTime: " + totalTime + " TimeLeft: " + timeLeft);


            // Update the progress label
            resultLabel.Text = "Line " + e.ProgressPercentage.ToString() + " of " + m_csNumLines + " at " + (int)(100 * (double)e.ProgressPercentage / m_csNumLines) + "% loaded";
        }

        // This event handler deals with the results of the background operation.
        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (e.Cancelled == true)
            {
                resultLabel.Text = "Canceled!";
            }
            else if (e.Error != null)
            {
                resultLabel.Text = "Error: " + e.Error.Message;
            }
            else
            {
                resultLabel.Text = "Done!";
                Form2 form2 = new Form2(m_csText);
                form2.ShowDialog();
            }
        }
    }
}