private void btnDeletePolicy_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Удалить полис?", "Удаление", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == System.Windows.Forms.DialogResult.Yes)
{
int idPolicy = Convert.ToInt32(_dgvPolicy.Rows[_dgvPolicy.SelectedCells[0].RowIndex].Cells[0].Value);
policyList.Delete(idPolicy);
loadPolicy();
}
}