private void LoadLegalForms()
{
List <LEGAL_FORMS> legalForms = _basicService.LoadAllLEGAL_FORMS(_businessParam).OrderBy(c => c.NAME).ToList();
legalForms.Insert(0, new LEGAL_FORMS {
NAME = "---", ID_LEGAL_FORM = -1
});
cboLegalForms.DataSource = legalForms;
cboLegalForms.DisplayMember = "NAME";
cboLegalForms.ValueMember = "ID_LEGAL_FORM";
}