public void LoadData()
{
taxList = Charges.GetChargeList("taxes");
TaxList = CollectionViewSource.GetDefaultView(taxList);
RaisePropertyChanged("TaxList");
TaxList.CurrentChanged += TaxList_CurrentChanged;
var noTax = taxList.FirstOrDefault(c => c.ChargeName == "No Tax");
TaxList.MoveCurrentTo(noTax);
}