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POwhy is progress bar not updated when the main UI is running by using backgroundworker? c#.net
 

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  1. POwhy is progress bar not updated when the main UI is running by using backgroundworker? c#.net
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    <p>Can anyone enlighten me on this? It's updated until the main UI thread is completed, why is that so?</p> <p>Part of my code:</p> <p>//Initialize the BW</p> <pre><code> private void InitializeBW() { BW.WorkerReportsProgress = true; BW.WorkerSupportsCancellation = true; BW.DoWork += new DoWorkEventHandler(BW_DoWork); BW.RunWorkerCompleted += new RunWorkerCompletedEventHandler( BW_RunWorkerCompleted); BW.ProgressChanged += new ProgressChangedEventHandler( BW_ProgressChanged); } </code></pre> <p>\Do Work event</p> <pre><code> private void BW_DoWork(object sender, DoWorkEventArgs e) { BackgroundWorker worker = sender as BackgroundWorker; for (int i = CurrentProcess; i &lt;= Process; i++) { if (worker.CancellationPending == true) { e.Cancel = true; break; } else { System.Threading.Thread.Sleep(100); worker.ReportProgress(i); } } CurrentProcess = Process; } </code></pre> <p>\Update main UI</p> <pre><code> private void BW_ProgressChanged(object sender, ProgressChangedEventArgs e) { pgBar.Value = e.ProgressPercentage; lbProgress.Text = (e.ProgressPercentage.ToString() + "%"); pgBar.Refresh(); lbProgress.Refresh(); } </code></pre> <p>\My main UI Operation</p> <pre><code>private void btnCreate_Click(object sender, EventArgs e) { try { DatabaseParam DBPara = new DatabaseParam(); isCreate = true; EDFields(!isCreate); DBPara.ServerName = txtServerName.Text; DBPara.DatabaseName = "PARKS_ARCHIVE_" + nudYear.Value.ToString(); DBPara.ID = txtUserName.Text; DBPara.Password = txtPassword.Text; DBPara.DataFileName = "PARKS_ARCHIVE_DATA_" + nudYear.Value.ToString(); DBPara.DataPathName = txtPath.Text + "\\PARKS_ARCHIVE_DATA_" + nudYear.Value.ToString(); DBPara.DataFileSize = "10MB"; DBPara.DataFileGrowth = "1024MB"; DBPara.LogFileName = "PARKS_ARCHIVE_LOG_" + nudYear.Value.ToString(); DBPara.LogPathName = txtPath.Text + "\\PARKS_ARCHIVE_LOG_" + nudYear.Value.ToString(); DBPara.LogFileSize = "10MB"; DBPara.LogFileGrowth = "20MB"; CreateDatabase(DBPara); } catch (Exception ex) { Logger.LogError("ucArchivePurge", "btnCreate_Click", ex.Message); } finally { } } </code></pre> <p>//Call to create database and table</p> <pre><code>private void CreateDatabase(DatabaseParam DBParam) { try { Process = 7; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } System.Threading.Thread.Sleep(800); txtProgress.Text = "Creating " + DBParam.DatabaseName + "..."; SQLConn.Open(); myCommand = new SqlCommand(sqlCreateDBQuery, SQLConn); myCommand.ExecuteNonQuery(); SQLConn.Close(); BW.CancelAsync(); Process = 14; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } System.Threading.Thread.Sleep(800); txtProgress.Text = "Creating Table tblAuditLogin..."; txtProgress.Refresh(); SQLCreate.Open(); myCommand.Connection = SQLCreate; myCommand.CommandText = CreateAuditLogin; myCommand.ExecuteNonQuery(); BW.CancelAsync(); Process = 21; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } System.Threading.Thread.Sleep(800); txtProgress.Text = "Creating Table tblAuditTrail..."; txtProgress.Refresh(); myCommand.CommandText = CreateAuditTrail; myCommand.ExecuteNonQuery(); BW.CancelAsync(); Process = 28; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblCardType..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateCardType; myCommand.ExecuteNonQuery(); Process = 35; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblErrorLog..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateErrorLog; myCommand.ExecuteNonQuery(); Process = 42; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblKanban_Card..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateTableKanban; myCommand.ExecuteNonQuery(); Process = 49; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblModule_Master..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateTableModule; myCommand.ExecuteNonQuery(); Process = 56; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblMTV..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateTableMTV; myCommand.ExecuteNonQuery(); Process = 63; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblPickList_Detail..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateTablePickDetail; myCommand.ExecuteNonQuery(); Process = 70; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblPickList_Header..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreatePickHeader; myCommand.ExecuteNonQuery(); Process = 77; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblProd_Requisition..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateTableProduction; myCommand.ExecuteNonQuery(); Process = 84; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblUser_Master..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateTableUser; myCommand.ExecuteNonQuery(); Process = 91; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Creating Table tblUser_Rights..."; txtProgress.Refresh(); System.Threading.Thread.Sleep(800); myCommand.CommandText = CreateTableRight; myCommand.ExecuteNonQuery(); SQLCreate.Close(); Process = 100; BW = new BackgroundWorker(); InitializeBW(); if (BW.IsBusy != true) { // Start the asynchronous operation. BW.RunWorkerAsync(); } txtProgress.Text = "Updating Log File..."; txtProgress.Refresh(); myCommand.CommandText = Log; myCommand.Connection = SQLConn; SQLConn.Open(); myCommand.ExecuteNonQuery(); SQLConn.Close(); if (MessageBox.Show("Database " + DBParam.DatabaseName + " has been successfully created !", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information) == DialogResult.OK) { txtProgress.Text = ""; } } catch (System.Exception ex) { MessageBox.Show(ex.Message, "Create Database",MessageBoxButtons.OK,MessageBoxIcon.Error); } finally { if (SQLConn != null) SQLConn.Close(); if (SQLCreate != null) SQLCreate.Close(); isCreate = false; EDFields(!isCreate); } return; } </code></pre>
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. COCan anyone help? Urgent! Any reply will be greatly appreciated!
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      1. POwhy is progress bar not updated when the main UI is running by using backgroundworker? c#.net
      1. USRoy.hpr
 

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