private void LoadPropetyTypes()
{
List <PROPERTY_TYPE> ptypes = _basicService.LoadAllPROPERTY_TYPE(_businessParam).OrderBy(c => c.NAME).ToList();
ptypes.Insert(0, new PROPERTY_TYPE {
NAME = "---", ID_PROPERTY_TYPE = -1
});
cboPropertyType.DataSource = ptypes;
cboPropertyType.DisplayMember = "NAME";
cboPropertyType.ValueMember = "ID_PROPERTY_TYPE";
}