void clear()
{
DateSupplier.ResetText();
text_Sup_ID.Clear();
textsupName.Clear();
textSupphone.Clear();
textSupemail.Clear();
textSupaddress.Clear();
}
private void button1_Click(object sender, EventArgs e)
{
text_Sup_ID.Text = clsssup.SupMaxID().Rows[0][0].ToString();
butadd.Enabled = true;
butnew.Enabled = false;
DateSupplier.ResetText();
textsupName.Enabled = true;
textSupphone.Enabled = true;
textSupemail.Enabled = true;
textSupaddress.Enabled = true;
textsupName.Focus();
}
