progressbar, backgrounworker (use a class1.cs)

Question

Hi,
My program:
I download (class1.cs) files from an FTP server.
This I want to see a progressbar.
Because I use a class1.cs is I use a background worker

Here is my project. c#
https://rapidshare.com/files/2905061196/WindowsFormsApplication1_Downloader.zip
If someone can put that in my project.

Thank you!
Jacky

Answer 1

The problem is to show a progressbar when he is downloading the files

i don't know how

here some code:
Form:

namespace WindowsFormsApplication1
{
    
    public partial class Form1 : Form
    {
        public  string pathName;
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Form2 formke2 = new Form2();
            formke2.Show();
           
            Class1.pathName=textBox1.Text;
            Class1.CombineBlocksIntoLibrary(Class1.getpathName());


        }
    }
}

Class1.cs

namespace WindowsFormsApplication1
{
    class Class1
    {
        public static String pathName;
        public static String getpathName()
        {
            return pathName;
        }

        public static void CombineBlocksIntoLibrary(string pathName)
        {
            string activeDir = @"c:\Temp";

            //Create a new subfolder under the current active folder
            string newPath = System.IO.Path.Combine(activeDir, "test");
            
            // Create the subfolder
            System.IO.Directory.CreateDirectory(newPath);

            //File Download,Write Local Copy, from FTP Location
            string localPath = @"C:\Temp\test\";

            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(pathName);
            request.Credentials = new NetworkCredential("LOGIN", "PASSWORD");
            request.Method = WebRequestMethods.Ftp.ListDirectory;

            StreamReader streamReader = new StreamReader(request.GetResponse().GetResponseStream());
            request = null;

            string fileName = streamReader.ReadLine();

            while (fileName != null)
            {
                FtpWebRequest requestFileDownload = null;
                FtpWebResponse responseFileDownload = null;

                try
                {
                    Console.WriteLine(fileName);

                    requestFileDownload = (FtpWebRequest)WebRequest.Create(pathName + fileName);
                    requestFileDownload.Credentials = new NetworkCredential("LOGIN", "PASSWORD");
                    requestFileDownload.Method = WebRequestMethods.Ftp.DownloadFile;
                    responseFileDownload = (FtpWebResponse)requestFileDownload.GetResponse();

                    Stream responseStream = responseFileDownload.GetResponseStream();
                    FileStream writeStream = new FileStream(localPath + fileName, FileMode.Create);

                   

                    int Length = 2048;
                    Byte[] buffer = new Byte[Length];
                    int bytesRead = responseStream.Read(buffer, 0, Length);
                    while (bytesRead > 0)
                    {
                        writeStream.Write(buffer, 0, bytesRead);
                        bytesRead = responseStream.Read(buffer, 0, Length);

                    }
                    
                    writeStream.Close();

                    Console.WriteLine("Download Done");
                }
                catch (System.Exception exceptionObj)
                {
                    Console.WriteLine(exceptionObj.Message.ToString());
                }
                finally
                {
                    requestFileDownload = null;
                    responseFileDownload = null;
                }

                fileName = streamReader.ReadLine();
            }

            request = null;
            streamReader = null;

        }
    }   
}

Answer 2

I dont see any backgroundworker class inside your code. Try to implement it, then come back here if you will need any help.

You can think of using Thread class (from Threading namespace) as well.

What you have to do is: 

- start a new thred (or DoWork method of bgv) 

- count all the files

- in a loop of all files then pass the progress value to progressBar.

With bgv you can do it like:

BackgroundWorker bgw = new BackgroundWorker();
private void button1_Click(object sender, EventArgs e)
{
    bgw.DoWork += new DoWorkEventHandler(bgw_DoWork);
    bgw.ProgressChanged += new ProgressChangedEventHandler(bgw_ProgressChanged);
    bgw.RunWorkerAsync();
}
void bgw_DoWork(object sender, DoWorkEventArgs e)
{
    //get the total of files (number of them, or an array of them (like FileInfo[])
    for (i = 0; i < totalFiles.Length; i++)
    {
        //do what ever with the single file...
        //and pass the value to progressbar:
        bgw.ReportProgress(i);
    }
}
void bgw_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressBar1.Value = e.ProgressPercentage;
}

Hope it helps a bit.

bye

---

Mitja

Answer 3

Use WebClient.DownloadFileAsync and update your ProgressBar in the DownloadProgressChanged event.

Answer 4

 

I do not know how to proceed..
And I do not know how the value of that class to which Form brings

well i got this now: 
Form1 and class1.cs

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;
//add form Form msdn
using System.Threading;


namespace WindowsFormsApplication1
{
    
    public partial class Form1 : Form
    {
        public  string pathName;
        private BackgroundWorker bgw = new BackgroundWorker();

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Class1.pathName=textBox1.Text;
            Class1.CombineBlocksIntoLibrary(Class1.getpathName());

            bgw.DoWork += new DoWorkEventHandler(bgw_DoWork);
            bgw.ProgressChanged += new ProgressChangedEventHandler(bgw_ProgressChanged);
            bgw.RunWorkerAsync();        
        }


        #region [ Threading ]
        private void bgw_DoWork(object sender, DoWorkEventArgs e)
        {        
           /* 
            //get the total of files (number of them, or an array of them (like FileInfo[])
             for (i = 0; i < totalFiles; i++)
            {
                //do what ever with the single file...
                //and pass the value to progressbar:
                bgw.ReportProgress(i);
            }*/
        }
        private void bgw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            // Reset the progress bar
            prbProgress.Minimum = 0;
            prbProgress.Value = 0;
            prbProgress.Enabled = false;
        }
        private void bgw_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
             prbProgress.Value = e.ProgressPercentage;
        }
        #endregion

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.IO;

namespace WindowsFormsApplication1
{
    class Class1
    {
        public static String pathName;


        public static String getpathName()
        {
            return pathName;
        }


        public static void CombineBlocksIntoLibrary(string pathName)
        {
            string activeDir = @"c:\Temp";

            //Create a new subfolder under the current active folder
            string newPath = System.IO.Path.Combine(activeDir, "test");
            
            // Create the subfolder
            System.IO.Directory.CreateDirectory(newPath);

            //File Download,Write Local Copy, from FTP Location
            string localPath = @"C:\Temp\test\";

            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(pathName);
            request.Credentials = new NetworkCredential("LOGIN", "PASSWORD");
            request.Method = WebRequestMethods.Ftp.ListDirectory;

            StreamReader streamReader = new StreamReader(request.GetResponse().GetResponseStream());
            request = null;

            string fileName = streamReader.ReadLine();

            while (fileName != null)
            {
                FtpWebRequest requestFileDownload = null;
                FtpWebResponse responseFileDownload = null;

                try
                {
                    Console.WriteLine(fileName);

                    requestFileDownload = (FtpWebRequest)WebRequest.Create(pathName + fileName);
                    requestFileDownload.Credentials = new NetworkCredential("LOGIN", "PASSWORD");
                    requestFileDownload.Method = WebRequestMethods.Ftp.DownloadFile;
                    responseFileDownload = (FtpWebResponse)requestFileDownload.GetResponse();

                    Stream responseStream = responseFileDownload.GetResponseStream();
                    FileStream writeStream = new FileStream(localPath + fileName, FileMode.Create);

                   

                    int Length = 2048;

                    Byte[] buffer = new Byte[Length];
                    int bytesRead = responseStream.Read(buffer, 0, Length);
                    while (bytesRead > 0)
                    {
                        writeStream.Write(buffer, 0, bytesRead);
                        bytesRead = responseStream.Read(buffer, 0, Length);
                    }
                    Int64 iRunningByteTotal = 0;
                    iRunningByteTotal += bytesRead;
                    
                    // calculate the progress out of a base "100"
                    double dIndex = (double)(iRunningByteTotal);
                    double dTotal = (double)buffer.Length;
                    double dProgressPercentage = (dIndex / dTotal);
                    int iProgressPercentage = (int)(dProgressPercentage * 100);



                    writeStream.Close();

                    Console.WriteLine("Download Done");
                }
                catch (System.Exception exceptionObj)
                {
                    Console.WriteLine(exceptionObj.Message.ToString());
                }
                finally
                {
                    requestFileDownload = null;
                    responseFileDownload = null;
                }

                fileName = streamReader.ReadLine();
            }

            request = null;
            streamReader = null;

        }
    }   
}

Answer 5

I will check it a bit later today.

---

Mitja

Answer 6

Ok, i hope today :)

Answer 7

Use WebClient.DownloadFileAsync and update your ProgressBar in the DownloadProgressChanged event.

For downloading files, would be better to use DownlaodFileAsync. Check here for a solution:

http://www.dreamincode.net/forums/topic/115491-download-file-asynchronously-with-progressbar/

---

Mitja