.NET MVC EF框架数据库连接配置

1：数据库的配置和连接 Web.config

<connectionStrings>
    <add name="SQLConnectionString" connectionString="server=18.8.8.8;database=Test;uid=sa;pwd=2018;MultipleActiveResultSets=true" providerName="System.Data.SqlClient" />
  </connectionStrings>

2：EF框架下的方式 DefaultDbContext

public class DefaultDbContext : DbContext
    {
        public DefaultDbContext():base("SQLConnectionString")
        {
        }

        /// <summary>
        /// 交易订单信息
        /// </summary>
        public DbSet<TRA_BargainOrder_Test> TRA_BargainOrders { get; set; }

    }
3：model 下的代码
public class TRA_BargainOrder_Test
    {
        public int ischeck
        {
            get; set;
        }

        public long TRA_BargainOrder_TestID
        {
            get; set;
        }

        /// <summary>
        /// 订单编号
        /// </summary>
        public string BargainOrderCode
        {
            get; set;
        }
        /// <summary>
        /// 城市代号
        /// </summary>
        public string CityCode
        {
            get; set;
        }

        public string ParkUserId
        {
            get; set;
        }

        public int FlowStatus
        {
            get; set;
        }

        public DateTime UpdateTime
        {
            get; set;
        }

        public int OrderStatus
        {
            get; set;
        }

        public int PayStatus
        {
            get; set;
        }

        public DateTime CreateTime
        {
            get; set;
        }
        public string ExpressCode { get; set; }
    }
4： EnumHelper.cs
 public class EnumHelper
    {

    public enum OrderStatus : int
    {
            UnSend = ,
            Sended =,//已发货
            Cancel=,
            Over =
        }
        public enum PayStatus : int
        {
            UnPaid=,
            Paid =//已支付完成

        }
        public enum FlowStatus : int
        {
            Cancel = , //已取消
            Over = ,//完成
        }
    }