Receive one article from the DB via C# and SQL Stored Procedure

GetArticle.cs

 public Models.ShopArticle GetArticle(int aID)
 {
            SqlCommand cmd = CreateSQLCommand("spGetShopArticle");
            cmd.Parameters.Add(CreateParam("@ArticleID", aID));

            var dataTable = Fill(cmd);
            var retval = new Models.ShopArticle();
            if (dataTable.TDataRows.Count == 0)
            {
                return retval;
            }
            var row = dataTable.TDataRows[0];
            retval = new Models.ShopArticle()
                {
                    Article = new Models.Article()
                    {
                        ArticleID = row.GetInt("ArticleID").GetValueOrDefault(-1),
                        Name = row.GetString("Name"),
                        Description = row.GetString("Description"),
                        TechnicalSpecs = row.GetString("TechnicalSpecs"),
                        Company = row.GetString("Company"),
                        CategoryID = row.GetInt("CategoryID").GetValueOrDefault(1)
                    },
                    StartTime = row.GetDateTime("StartTime").Value,
                    EndTime = DateTime.Parse(row.GetString("EndTime")),
                    StartPrice = decimal.Parse(row.GetString("StartPrice")),
                    EndPrice = decimal.Parse(row.GetString("EndPrice"))
                };

            return retval;
        }