Using Backgroundworker to copy files

Joe

I made a program, Something very simple to backup 3 folders on my Hard Drive.
I use 3 Check boxes that I click that backups any one of 3 folders.

The problem that I have is that I want the files being copied to get placed into a Text Box or a List View Box. What I click the Backup button. It seems to copy all the files 1st before if it writes them into the Text Box.

I want it to write each file to the text box as it's being copied. Is that even possible.

any one know where I can get some samples using the background worker to copy file and write to a list box. ?

9 Replies

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Kirtan Patel17y ago
Accepted answer
Friend ,

Here is your Solution Please check "Do you like this answer check box if it helps you :)

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)

        {

            Control.CheckForIllegalCrossThreadCalls = false;

            string Foldertobackup = @"E:\backup";

            string[] FilesInFolder = Directory.GetFiles(Foldertobackup);

            Directory.CreateDirectory(@"D:\BackUpFolderName");

            listBox1.Items.Add("Back up Directory Created !!" );

            foreach (string file in FilesInFolder)

            {

                FileInfo f = new FileInfo(file);

                File.Copy(file,@"D:\BackUpFolderName\"+f.Name,true);

                listBox1.Items.Add(f.Name +"Copied \n\n!!") ;

            }

        }

        private void button1_Click(object sender, EventArgs e)

        {

            backgroundWorker1.RunWorkerAsync();

        }
Joe16y ago
Thats could be true too. Since the files that are in the folder range from 356kbs to 4meg
Kirtan Patel16y ago
My be possible that you are copying big file so it may take some time to copy file so it pauses after copying some file and then Writes in List Box When File is Copied !!
Joe16y ago
I know that. The program doesn't act like that. That's what I'm trying to say. It copies like the 1st 5 or 6 filea and then it seems to copy all of the remaining files before you can see them in the ListBox. filename copied! filename copied! filename copied! then is seems to hang here and then after it copies all the other files it when it displays then in the ListBox.
Kirtan Patel16y ago
Friend,

Code Copies Only One File at a Time As you can see Processing is Done in Foreach loop that process only one File at time :)
Joe17y ago
Sorry I was wrong. It seems to copy the 1st 4 files. and then it hangs and copies all the remaining file all at the same time. So I was working ok, with the 1st 4 files. If you still watching. Now what. Like I said it should only copy one file at a time witch it is. and write each one, one at a time to the list box.

Joe17y ago

Thanks. I had to make some changes, It works. Thanks again.

  private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
        	
        	Control.CheckForIllegalCrossThreadCalls = false;
        	
        	if(checkBox1.Checked)
        	{
        	string BackUpFolder = @"c:\backup\text\";
        	string Foldertobackup = @"c:\text\textfiles\";

            string[] FilesInFolder = Directory.GetFiles(Foldertobackup);
            
            if(!Directory.Exists(BackUpFolder))
            {
 			Directory.CreateDirectory(BackUpFolder);
            listBox1.Items.Add("Back up Directory Created !!" );
            }

            foreach (string file in FilesInFolder)
			{

                FileInfo f = new FileInfo(file);

                File.Copy(Foldertobackup + f.Name,BackUpFolder+f.Name,true);

                listBox1.Items.Add(f.Name +"  Copied \n\n!!") ;
                    
                if (backgroundWorker1.CancellationPending)
                {
                    e.Cancel = true;
                    return;
                }
            }
        	}
        	else
        	{
        		listBox1.Items.Add("TextFiles Not selected.\n\n!!") ;        		
        	}

        }

Kirtan Patel17y ago
Dont Use '\\' (double slash) while writing path as you we use @ we dont need to write double slash .

just use single '\' in path

and friend, please check "Do you like this answer" check box :)

Joe17y ago

Thanks I added your option to mine and well it doesn't do any thing.
So I'm lost.

Here's my code below

  private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
        	
        	Control.CheckForIllegalCrossThreadCalls = false;
        	
        	string Foldertobackup = @"c:\\text\\textfiles\\";

            string[] FilesInFolder = Directory.GetFiles(Foldertobackup);
            
            if(!Directory.Exists(Foldertobackup))
            {
 			Directory.CreateDirectory("c:\\backup\\text\\");
            listBox1.Items.Add("Back up Directory Created !!" );
            }

            foreach (string file in FilesInFolder)
			{

                FileInfo f = new FileInfo(file);

                File.Copy(Foldertobackup + file,@"c:\\BackUp\\text\\"+f.Name,true);

                listBox1.Items.Add(f.Name +"Copied \n\n!!") ;
                    
                if (backgroundWorker1.CancellationPending)
                {
                    e.Cancel = true;
                    return;
                }
            }

        }

Can you tell me what I'm going wrong