select * from UserInfo
--01 事务
--01-01 开启事务(try---catch)捕获异常
BEGIN trybegin transactionUpdate UserInfo set StuName = N'逍遥小天狼' where EmpId = 10Update UserInfo set StuAge = N'年龄' where EmpId = 11--01-02 提交事务commit transaction
END tryBEGIN catch--01-03回滚事务rollback tran;
END catch

using System;
using System.Collections.Generic;
using System.Data.SqlClient; using System.Linq; using System.Text; using System.Threading.Tasks; namespace TransactionDemo { class Program { static void Main(string[] args) { #region 01事务 //01 连接字符串 string connstr = "Data Source=127.0.0.1;uid=sa;pwd=sa;Initial Catalog=DemoDB;"; using (SqlConnection conn = new SqlConnection(connstr)) { using (SqlCommand cmd = conn.CreateCommand()) { conn.Open(); //02-01创建事务 SqlTransaction tran = conn.BeginTransaction(); //02-02 把事务给cmd的事务属性 cmd.Transaction = tran; try { cmd.CommandText = @"Update UserInfo set StuName = N'逍遥小天狼' where EmpId = 10 Update UserInfo set StuAge = 111 where EmpId = 11"; cmd.ExecuteNonQuery(); //事务提交  tran.Commit(); } catch (Exception) { tran.Rollback(); } } Console.Read(); #endregion } } } }

 #region 02事务try{using (TransactionScope scope = new TransactionScope()){using (SqlConnection conn = new SqlConnection(connstr)){using (SqlCommand cmd = conn.CreateCommand()){conn.Open();cmd.CommandText = @"Update UserInfo set StuName = N'逍遥小天狼' where EmpId = 10Update UserInfo set StuAge = 111 where EmpId = 11";cmd.ExecuteNonQuery();Console.WriteLine("执行成功!");}}//提交事务
                    scope.Complete();}}catch (Exception){Console.WriteLine("异常");}Console.Read();#endregion