private void btnDelete_Click(object sender, EventArgs e)
 {
     if (dataGridView.SelectedRows.Count > 0)
     {
         var            worker         = dataGridView.SelectedRows[0].Cells;
         var            workerId       = int.Parse(worker[0].Value.ToString());
         WorkerBusiness workerBusiness = new WorkerBusiness();
         workerBusiness.Delete(workerId);
         PopulateDataGridViewDefault();
         ResetSelect();
     }
 }