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(); } }