private void btn_c_stdSearch_Click(object sender, EventArgs e)
{
HandleException(() =>
{
List <Students> students = stdOpr.Show(tb_c_stdNumber.Text);
dgv_info.DataSource = students;
table = "rent_students";
});
}
private void ListItems()
{
List <Students> students = stdOpt.Show();
dgv_students.DataSource = students;
}
