C#

int RowCount = 100;
       int AddRow = 0;
       private void button3_Click(object sender, EventArgs e)
       {
           progressBar1.Maximum = RowCount;
           backgroundWorker1.WorkerReportsProgress = true;
           backgroundWorker1.RunWorkerAsync();

       }

       private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
       {
           for (int i = 0; i < RowCount; i++)
           {
               AddRow = i;
               backgroundWorker1.ReportProgress(AddRow);
           }

       }

       private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
       {
           progressBar1.Value = e.ProgressPercentage;
       }

Nigel Mackay wrote:

Ta