bool CanNextAltExecute(object param)
 {
     if (AltContractRates != null && AltContractRates.Count > 0 && AltContractRates.IndexOf(SelectedAltContractRate) < AltContractRates.Count - 1)
     {
         return(true);
     }
     return(false);
 }
        void NextAltExecute(object param)
        {
            int  indexOf = AltContractRates.IndexOf(SelectedAltContractRate);
            bool really  = (AltContractRates != null && AltContractRates.Count > 0 && AltContractRates.IndexOf(SelectedAltContractRate) < AltContractRates.Count - 1);

            try
            {
                SelectedAltContractRate = AltContractRates[AltContractRates.IndexOf(SelectedAltContractRate) + 1];
            }
            catch (Exception ex)
            {
            }
        }
 void PrevAltExecute(object param)
 {
     SelectedAltContractRate = AltContractRates[AltContractRates.IndexOf(SelectedAltContractRate) - 1];
 }