数据访问层开启事务

多表删除的一个例子:
 1 public int DeleteContractData(long ContractID)
 2         {
 3             string delContractInfo = @"UPDATE ContractInfo SET DelFlag=1 WHERE ContractID=@ContractID";
 4 
 5             //数据库连接属性 引用using System.Data.SqlClient;
 6             using (SqlConnection IDbCon = new SqlConnection(ConfigureHelp.Connection))
 7             {
 8                 //数据库连接
 9                 IDbCon.Open();
10                 //开启事务。需引用using System.Data;
11                 IDbTransaction _tran = IDbCon.BeginTransaction();
12                 try
13                 {
14                     //在参数后面放入 事务参数
15                     int delCI = IDbCon.Execute(delContractInfo, new { @ContractID = ContractID }, _tran);
16                     if (delCI > 0)
17                     {
18                         //事务提交
19                         _tran.Commit();
20                         return 1;
21                     }
22                     else
23                     {
24                         //操作失败、事务回滚
25                         _tran.Rollback();
26                         return 0;
27                     }
28                 }
29                 catch (Exception ex)
30                 {
31                     _tran.Rollback();
32                     UtilityHelp.WriteLog(ex, ex.ToString());
33                     return -1;
34                 }
35             }
36         }