JLH/JLHHJSvr/BLL/HelperBase.cs

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace JLHHJSvr.BLL
{
    internal abstract class HelperBase
    {
        /// <summary>
        /// 数据库连接
        /// </summary>
        public SqlCommand cmd { get; set; }
        /// <summary>
        /// 预留的上下文
        /// </summary>
        public Context context { get; set; }
        public static T GetHelper<T>(SqlCommand cmd) where T : HelperBase, new()
        {
            var rslt = new T();
            rslt.cmd = cmd;
            return rslt;
        }

        public static T GetHelper<T>(SqlCommand cmd, Context context) where T : HelperBase, new()
        {
            var rslt = new T();
            rslt.cmd = cmd;
            rslt.context = context ?? new Context();
            return rslt;
        }

        public sealed class Context
        {
            private DateTime _opdate = DateTime.Now;

            public DateTime opdate
            {
                get { return _opdate; }
                set { _opdate = value; }
            }
            /// <summary>
            /// 用户登陆信息
            /// </summary>
            public TokenData tokendata { get; set; }
        }
    }
}