src/Library/NetPro.Dapper/Repositories/DapperRepositoryAsync.cs

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

using Dapper;
using NetPro.Dapper.Expressions;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static Dapper.SqlMapper;

namespace NetPro.Dapper.Repositories
{
    public partial class DapperRepository<DapperDbContext> : IDapperRepository<DapperDbContext> where DapperDbContext : DapperContext
    {
        #region 事务隔离级别设置

        /// <summary>
        /// 异步脏读
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="acquire"></param>
        /// <param name="withNoLock"></param>
        /// <returns></returns>
        protected async Task<T> ReadUncommittedAsync<T>(Func<Task<T>> acquire, bool withNoLock)
        {
            if (withNoLock)
            {
                Execute("SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED");
            }
            try
            {
                var result = await acquire();
                return result;
            }
            catch (Exception ex) when (ex.Message == "Sequence contains no elements")//用于处理SingleQuery查询查询不到的异常
            {
                return default;
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                if (withNoLock)
                {
                    Execute("SET TRANSACTION ISOLATION LEVEL READ COMMITTED");
                }
            }
        }
        #endregion

        #region 新增、修改、删除

        /// <summary>
        /// 插入实体
        /// 主键是int类型，返回主键值，非int类型返回null
        /// </summary>
        /// <param name="entity"></param>
        public async Task<int?> InsertAsync<T>(T entity)