public static BG_PreviewStruct AddBG_PreviewStruct(BG_PreviewStruct bG_PreviewStruct)
        {
            string sql =
                "INSERT BG_PreviewStruct (PSType, PSType2, PSName, PDData, PDLYData)" +
                "VALUES (@PSType, @PSType2, @PSName, @PDData, @PDLYData)";

            sql += " ; SELECT @@IDENTITY";

            try
            {
                SqlParameter[] para = new SqlParameter[]
                {
                    new SqlParameter("@PSType", bG_PreviewStruct.PSType),
                    new SqlParameter("@PSType2", bG_PreviewStruct.PSType2),
                    new SqlParameter("@PSName", bG_PreviewStruct.PSName),
                    new SqlParameter("@PDData", bG_PreviewStruct.PDData),
                    new SqlParameter("@PDLYData", bG_PreviewStruct.PDLYData)
                };

                string IdStr = DBUnity.ExecuteScalar(CommandType.Text, sql, para);
                int newId = Convert.ToInt32(IdStr);
                return GetBG_PreviewStructByPSID(newId);

            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                throw e;
            }
        }
 public static bool ModifyBG_PreviewStruct(BG_PreviewStruct bG_PreviewStruct)
 {
     return BG_PreviewStructService.ModifyBG_PreviewStruct(bG_PreviewStruct);
 }
 public static bool DeleteBG_PreviewStruct(BG_PreviewStruct bG_PreviewStruct)
 {
     return BG_PreviewStructService.DeleteBG_PreviewStruct(bG_PreviewStruct);
 }
 public static BG_PreviewStruct AddBG_PreviewStruct(BG_PreviewStruct bG_PreviewStruct)
 {
     return BG_PreviewStructService.AddBG_PreviewStruct(bG_PreviewStruct);
 }
        public static BG_PreviewStruct GetBG_PreviewStructByPSID(int pSID)
        {
            string sql = "SELECT * FROM BG_PreviewStruct WHERE PSID = @PSID";

            try
            {
                SqlParameter para = new SqlParameter("@PSID", pSID);
                DataTable dt = DBUnity.AdapterToTab(sql, para);

                if(dt.Rows.Count > 0)
                {
                    BG_PreviewStruct bG_PreviewStruct = new BG_PreviewStruct();

                    bG_PreviewStruct.PSID = dt.Rows[0]["PSID"] == DBNull.Value ? 0 : (int)dt.Rows[0]["PSID"];
                    bG_PreviewStruct.PSType = dt.Rows[0]["PSType"] == DBNull.Value ? "" : (string)dt.Rows[0]["PSType"];
                    bG_PreviewStruct.PSType2 = dt.Rows[0]["PSType2"] == DBNull.Value ? "" : (string)dt.Rows[0]["PSType2"];
                    bG_PreviewStruct.PSName = dt.Rows[0]["PSName"] == DBNull.Value ? "" : (string)dt.Rows[0]["PSName"];
                    bG_PreviewStruct.PDData = dt.Rows[0]["PDData"] == DBNull.Value ? 0 : (decimal)dt.Rows[0]["PDData"];
                    bG_PreviewStruct.PDLYData = dt.Rows[0]["PDLYData"] == DBNull.Value ? 0 : (decimal)dt.Rows[0]["PDLYData"];

                    return bG_PreviewStruct;
                }
                else
                {
                    return null;
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                throw e;
            }
        }
 public static bool DeleteBG_PreviewStruct(BG_PreviewStruct bG_PreviewStruct)
 {
     return DeleteBG_PreviewStructByPSID( bG_PreviewStruct.PSID );
 }
        public static bool ModifyBG_PreviewStruct(BG_PreviewStruct bG_PreviewStruct)
        {
            string sql =
                "UPDATE BG_PreviewStruct " +
                "SET " +
                    "PSType = @PSType, " +
                    "PSType2 = @PSType2, " +
                    "PSName = @PSName, " +
                    "PDData = @PDData, " +
                    "PDLYData = @PDLYData " +
                "WHERE PSID = @PSID";

            try
            {
                SqlParameter[] para = new SqlParameter[]
                {
                    new SqlParameter("@PSID", bG_PreviewStruct.PSID),
                    new SqlParameter("@PSType", bG_PreviewStruct.PSType),
                    new SqlParameter("@PSType2", bG_PreviewStruct.PSType2),
                    new SqlParameter("@PSName", bG_PreviewStruct.PSName),
                    new SqlParameter("@PDData", bG_PreviewStruct.PDData),
                    new SqlParameter("@PDLYData", bG_PreviewStruct.PDLYData)
                };

                int t = DBUnity.ExecuteNonQuery(CommandType.Text, sql, para);
                if(t>0)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                throw e;
            }
        }