private void btnAdd_Click(object sender, EventArgs e)
{
PL.insertCustomer frm = new insertCustomer();
frm.state = "add";
frm.ShowDialog();
this.metroGrid1.DataSource = customer.getCustomerInfo();
}
private void btnModify_Click(object sender, EventArgs e)
{
PL.insertCustomer frm = new insertCustomer();
frm.txtName.Text = this.metroGrid1.CurrentRow.Cells[1].Value.ToString();
frm.txtPhone.Text = this.metroGrid1.CurrentRow.Cells[2].Value.ToString();
frm.UserID = Convert.ToInt32(this.metroGrid1.CurrentRow.Cells[0].Value);
frm.state = "update";
frm.ShowDialog();
this.metroGrid1.DataSource = customer.getCustomerInfo();
}