CaiQie/DB/Service/UpdateLogService.cs

using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Windows.Forms.VisualStyles;
using DB.Dto;
using DB.Entity;

using Tool;

namespace DB.Service
{
    public class UpdateLogService
    {
        public bool AddOrUpdateLog(UserDto user,string address,uint value)
        {
            UpdateLog log = new UpdateLog
            {
                ID = SnowflakeFactory.NewId,
                PointName = address,
                CreateDate = DateTime.Now,
                CreateUserId = user.Id.ToString(),
                CreateUserName = user.UserName,
                LastModifyUserId = "",
                LastModifyUserName = "",
                LastModifyDate = DateTime.Now
            };

            using (var dbContext = DbFactory.GetContext)
            {
                var firstOrDefault = dbContext.Query<UpdateLog>()
                    .Where(x=>x.PointName==address)
                    .OrderByDesc(x=>x.ID).FirstOrDefault();
                if (firstOrDefault != null)
                {
                    if (firstOrDefault.NewValue != value.ToString())
                    {
                       
                        log.OldValue = firstOrDefault.NewValue;
                        log.NewValue = value.ToString();
                        dbContext.Insert(log);
                    }
                }
                else
                {
                  
                    log.OldValue = "";
                    log.NewValue = value.ToString();
                    dbContext.Insert(log);
                }

            }

            return true;


        }
    }
}