public DataSet GetAssetMaturityDates(int portfolioId)
        {
            AssetDao assetDao = new AssetDao();
            DataSet  getAssetMaturityDatesDs;

            try
            {
                getAssetMaturityDatesDs = assetDao.GetAssetMaturityDates(portfolioId);
            }
            catch (BaseApplicationException Ex)
            {
                throw Ex;
            }
            catch (Exception Ex)
            {
                BaseApplicationException exBase       = new BaseApplicationException(Ex.Message, Ex);
                NameValueCollection      FunctionInfo = new NameValueCollection();
                FunctionInfo.Add("Method", "AssetBo.cs:GetAssetMaturityDates()");
                object[] objects = new object[1];
                objects[0]   = portfolioId;
                FunctionInfo = exBase.AddObject(FunctionInfo, objects);
                exBase.AdditionalInformation = FunctionInfo;
                ExceptionManager.Publish(exBase);
                throw exBase;
            }
            return(getAssetMaturityDatesDs);
        }