private void TXT_CONTACT_01_KeyDown(object sender, KeyEventArgs e)
 {
     if (e.KeyCode == Keys.Enter)
     {
         TXT_CONTACT_02.Focus();
     }
 }
 private void clearAll()
 {
     LBL_SUPPLIER_ID.Text = "N/A";
     TXT_SUPPLIER_NAME.Clear();
     TXT_COMPANY_NAME.Clear();
     TXT_ADDRESS.Clear();
     TXT_CONTACT_01.Clear();
     TXT_CONTACT_02.Clear();
     TXT_NOTE.Clear();
 }