private void LoadAllLandCategory()
{
List <LAND_CATEGORY> categories = _basicService.LoadAllLAND_CATEGORY(_businessParam).OrderBy(c => c.NAME).ToList();
categories.Insert(0, new LAND_CATEGORY {
NAME = "---", ID_LAND_CATEGORY = -1
});
cboCategory.DataSource = categories;
cboCategory.DisplayMember = "NAME";
cboCategory.ValueMember = "ID_LAND_CATEGORY";
}