help with progressbar and Thread

hi guys! i have a code below that supposedly, Set e.Cancel to true, set the LblProgressBar (a ToolStripStatusLabel) Text Property to "Performing Backup" and Visible property to true, set the pBar(a ToolStripProgressBar) Visible property to true and call the function FuncPeformBackup using Thread after the FuncPerformBackup is finished set the e.Cancel to false, for it to close the form, But it doest not work the way I expected the LblProgressBar and pBar does not show up. I inserted 200,000 rows in one of the tables in the database for the backup to take a while and to check if the label and the progress bar will show up..but i have no luck. I just want to have a progress bar to let the user know that the application is performing backup job in background. Any suggestion guys on how can i solve this problem..Thanks!

Code:

---

        private void RCPSIndex_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (DBBackupRecovery.dbEnableBackup && DBBackupRecovery.dbBackupEverySysClose)
            {
                e.Cancel = true;
                LblProgressBar.Text = "Performing Backup";
                LblProgressBar.Visible = true;
                pBar.Visible = true;               
                Thread t = new Thread(new ThreadStart(FuncPeformBackup));
                t.Start();
                Thread.Sleep(100);

                t.IsBackground = true;
                t.Join();
                e.Cancel = false;
            }
        }

---

try using the Backgroundworker component. It can report progress to a progressbar while doing the work

Actually, I've tried that prior to creating this thread but got no luck.

Code:

---

        private void RCPSIndex_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (DBBackupRecovery.dbEnableBackup && DBBackupRecovery.dbBackupEverySysClose)
            {
                e.Cancel = true;
                LblProgressBar.Text = "Performing Backup";
                LblProgressBar.Visible = true;
                pBar.Visible = true;
                BackupBackgrndWorker.RunWorkerAsync();
                e.Cancel = false;
                //I know there is a problem here, It will exit without checking if BackupBackgrndWorker
                //is Completed
            }
        }

        private void BackupBackgrndWorker_DoWork(object sender, DoWorkEventArgs e)
        {
            FuncPeformBackup();
        }

        private void BackupBackgrndWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            LblProgressBar.Text  = "Backup Completed";
            LblProgressBar.Visible = false;
            pBar.Visible = false;
            BackupBackgrndWorker.Dispose();
        }

        public void FuncPeformBackup()
        {
            string BackFilePath = CommonFunctions.GenerateBackupFileName();
            bool backup = CommonFunctions.BackUpDB(DBBackupRecovery.dbServer, DBBackupRecovery.dbName, DBBackupRecovery.dbUserName,
                                    DBBackupRecovery.dbPassword, BackFilePath, DBBackupRecovery.dbUseWindowAuthentication);
        }

---

RunWorkerAsync() means start running on another thread so the maching initializes that thread and gets back to where it left which is "e.Cancel = false;" so it exits the application

call this to update your progressbar wouldn't be a bad idea either.

vb Code:

void bw_ProgressChanged (object sender,
  ProgressChangedEventArgs e) {      }

http://www.albahari.com/threading/pa...ckgroundWorker

Quote:

---

Originally Posted by superbovine

call this to update your progressbar wouldn't be a bad idea either.

vb Code:

void bw_ProgressChanged (object sender,
  ProgressChangedEventArgs e) {      }

http://www.albahari.com/threading/pa...ckgroundWorker

---

Actually there is a method called ReportProgress in the BackgroundWorker Class to do that

Quote:

---

Originally Posted by ComputerJy

Actually there is a method called ReportProgress in the BackgroundWorker Class to do that

---

you got the idea:P