Progressbar percentage

What is the solution then?

When I tried the second codes, I saves the unchecked lnes too.  I had tried a similiar code to the second before.

Modify

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    int totalRecords = dataGridView1.Rows.Count;

    for (int i = 0; i < totalRecords; i++)
    {
        // Save the current data record here

        int percents = (i * 100) / totalRecords;

        backgroundWorker1.ReportProgress(percents, i);

        System.Threading.Thread.Sleep(50); // Adjust sleep duration as needed
    }
}

due to the fact that your progress update logic is based on a fixed number of iterations (totalIterations) rather than being tied directly to the number of records being processed.

Thank you Tahir. Your code is working fine but  when I save 50 datas or even only one data, the progress bar is runsing at the same speed. What is the reason of this?

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    int totalRecords = dataGridView1.Rows.Count;
    int totalIterations = totalRecords > 100 ? 500 : 100;

    for (int i = 0; i <= totalIterations; i++)
    {
        System.Threading.Thread.Sleep(totalRecords > 100 ? 100 : 50);

        int percents = (i * 100) / totalIterations;

        backgroundWorker1.ReportProgress(percents, i);
    }
}

private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressBar1.Value = e.ProgressPercentage;
    labelProgress.Text = $"Progress: {e.ProgressPercentage}%";

    // Use e.UserState to get the current iteration if needed
    int currentIteration = (int)e.UserState;

    // You can update your DataGridView here based on the currentIteration
}

private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    // Handle completion or any cleanup here
}

• You handle the actual work within the DoWork event handler of the BackgroundWorker.
• The ProgressChanged event is used to update the progress bar and any UI elements you need to update.
• RunWorkerCompleted event is used to handle any post-work cleanup or tasks.