how to add a progress bar or loading bar or time of loading data for t

Mohammad Hussain thank you for the response but progress bar value doesn't work

private BackgroundWorker backgroundWorker;

public YourForm()
{
    InitializeComponent();

    // Initialize the BackgroundWorker
    backgroundWorker = new BackgroundWorker();
    backgroundWorker.WorkerReportsProgress = true;
    backgroundWorker.DoWork += BackgroundWorker_DoWork;
    backgroundWorker.ProgressChanged += BackgroundWorker_ProgressChanged;
}

private void BtnBrowse_Click(object sender, EventArgs e)
{
    using (OpenFileDialog openFileDialog = new OpenFileDialog() { Filter = "Excel 97-2003 Workbook|*.xls|Excel Workbook|*.xlsx" })
    {
        if (openFileDialog.ShowDialog() == DialogResult.OK)
        {
            txtFilename.Text = openFileDialog.FileName;

            // Start the BackgroundWorker to load data
            backgroundWorker.RunWorkerAsync(openFileDialog.FileName);
        }
    }
}

private void BackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
    string fileName = e.Argument as string;

    using (var stream = File.Open(fileName, FileMode.Open, FileAccess.Read))
    {
        using (IExcelDataReader reader = ExcelReaderFactory.CreateReader(stream))
        {
            DataSet result = reader.AsDataSet(new ExcelDataSetConfiguration()
            {
                ConfigureDataTable = (_) => new ExcelDataTableConfiguration() { UseHeaderRow = true }
            });
            tableCollection = result.Tables;
        }
    }
}

private void BackgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    // Update the progress bar or loading indicator here
    // You can use e.ProgressPercentage to set the progress value
}

private void BackgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    // Data loading is complete, update the UI or perform any other actions
}