sing 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.Net;
using System.IO;
using System.Threading;

namespace Letoltesvezerlo
{
    public partial class Form1 : Form
    {
        private Thread thrLetolt;
        private Stream strValasz;
        private Stream strHelyiMentes;
        private HttpWebRequest webKerelem;
        private HttpWebResponse webValasz;
        private static int LetoltesSzazalek;
        private delegate void UpdateProgessCallback(Int64 BytesRead, Int64 TotalBytes);

        public Form1()
        {
            InitializeComponent();
        }

        private void btnLetoltes_Click(object sender, EventArgs e)
        {

            lblFolyamat.Text = "Letöltés elkezdve!";
            thrLetolt = new Thread(new ThreadStart(Letolt));
            thrLetolt.Start();
        }

        private void UpdateProgress(Int64 BytesRead, Int64 TotalBytes)
        {

            LetoltesSzazalek = Convert.ToInt32((BytesRead * 100) / TotalBytes);
            prgLetolt.Value = LetoltesSzazalek;
            lblFolyamat.Text = "ennyi van letöltve " + BytesRead + " -ből " + TotalBytes + " (" + LetoltesSzazalek + "%)";
        }

        private void Letolt()
        {
            using (WebClient wcDownload = new WebClient())
            {
                try
                {

                    webKerelem = (HttpWebRequest)WebRequest.Create(textBoxUrl.Text);
                    webKerelem.Credentials = CredentialCache.DefaultCredentials;
                    webValasz = (HttpWebResponse)webKerelem.GetResponse();

                    Int64 fileSize = webValasz.ContentLength;
                    strValasz = wcDownload.OpenRead(textBoxUrl.Text);
                    strHelyiMentes = new FileStream(textBoxUtvonal.Text, FileMode.Create, FileAccess.Write, FileShare.None);

                    int bytesSize = 0;
                    byte[] downBuffer = new byte[2048];

                    while ((bytesSize = strValasz.Read(downBuffer, 0, downBuffer.Length)) > 0)
                    {
                        strHelyiMentes.Write(downBuffer, 0, bytesSize);

                        this.Invoke(new UpdateProgessCallback(this.UpdateProgress), new object[] { strHelyiMentes.Length, fileSize });
                    }
                }
                finally
                {

                    strValasz.Close();
                    strHelyiMentes.Close();
                }
            }
        }

        private void btnAllj_Click(object sender, EventArgs e)
        {

            webValasz.Close();
            strValasz.Close();
            strHelyiMentes.Close();

            thrLetolt.Abort();

            prgLetolt.Value = 0;
            lblFolyamat.Text = "Letöltés megállítva!";
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void label1_Click(object sender, EventArgs e)
        {

        }
    }
 }