总结Linq或者lamdba的写法

               var head = new OmsEcorderHead
                {
                    PkEcorderHead = OrderHeadId,
                    AppId = appid,
                    Integral = Convert.ToDecimal(reqdata.Body.Integral.ToString()),
                    ShipIntegral = Convert.ToDecimal(reqdata.Body.ShipIntegral.ToString()),
                    //必填
                    Co = reqdata.Body.CO,
                    Whse = reqdata.Body.WHSE,
                    ReceiptTime = Convert.ToDateTime(reqdata.Body.ReceiptTime.ToString("yyyy-MM-dd HH:mm:ss"))
                }

                var InvoiceTitle = new string[] { "a", "b", "c", "d ", "e" };
                if (InvoiceTitle.Where<string>(l => l == reqdata.Body.InvoiceTitle.ToLower()).Count() == 0)
                     throw new ECOrderException { ErrorCode = "X1007-01", TransMessage = "传入的InvoiceTitle的值不正确，请修改" };

　　

 将传递过来的一个实体，赋值给一个自己的类， 
 1 var ary = reqdata.Body.Detail.Select(l => new OMSECData.orderDetail
                { 
 4                     GoodsName = l.GoodsName,
                    GoodsNumber = l.GoodsNumber,
                    GoodsPrice = l.GoodsPrice,
                    TradeIntegral = l.TradeIntegral,
                    ShopMoney = l.ShopMoney,
                    GoodsAmount = l.GoodsAmount，   
                    CreateDateTime = Convert.ToDateTime(DateTime.UtcNow.AddHours(8))
                }).ToList();

                   foreach (var item in ary)
                    head.OmsEcorderDetail.Add(item);

ActionResult result = null;

 var obj = new JObject
                {
                    {"Head", new JObject
                        {
                            { "TransMessage","" },
                            { "TransCode",transCode },
                            { "TransId", reqdata.Head.TransId },
                            { "ErrorCode", "" }
                        }
                    },
                    {"Body", new JObject
                        {
                            { "CreateDateTime", DateTimeOffset.Now.AddHours(8).ToUnixTimeSeconds().ToString() }
                        }
                    }
                };

                result = new ContentResult()
                {
                    Content = Newtonsoft.Json.JsonConvert.SerializeObject(obj),
                    ContentType = "application/json"
                };