معرفة المدة الزمنية للحدث - نسخة قابلة للطباعة

PHP كود :
[align=left]using System;
using System.Windows.Forms;
using System.Threading;
namespace ShapList
{
    public partial class Form1 : Form
    {
        DateTime start;
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            if (!backgroundWorker1.IsBusy)
            {
                start = DateTime.Now;
                label1.Text = "" + start;
                backgroundWorker1.RunWorkerAsync();
            }
            else
            {
                MessageBox.Show("Please Wait !!!");
            }
        }

        private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
        {
            listBox1.Items.Clear();
            progressBar1.Maximum = 10000;       
            for (int I = 0; I <= 10000; I++)
            {
            //  Thread.Sleep(1);
                progressBar1.Value = I;
                listBox1.Items.Add(I);           
              // listBox1.SelectedIndex = I;
            }          
            listBox1.SelectedIndex = listBox1.Items.Count - 1;  
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            Control.CheckForIllegalCrossThreadCalls = false;
        }
        private void backgroundWorker1_RunWorkerCompleted(object sender, System.ComponentModel.RunWorkerCompletedEventArgs e)
        {
            TimeSpan timeDiff = DateTime.Now - start;
            label2.Text = "" + DateTime.Now;
            label3.Text = "" + timeDiff;
            progressBar1.Value = 0;
           // MessageBox.Show("Job Compeleted !!");
        }

    }
}
[/align]