为了方便移到了ADO.NET分类里
事务的主要特征是，任务要么全部完成，要么都不完成
事务常用于写入或更新数据库中的数据。将数据写入文件或注册表也可以使用事物。
ADO.NET不支持跨越多个连接的事物，它总是关联到一个连接上的本地事务。
1.引入dll ----- System.Transactions
2.引入命名空间
using System.Transactions
1.引入dll---- System.Data.OracleClinet
2.引入命名空间
using System.Data.OleDb;
不带事物的多表增删改
string str = ConfigurationManager.AppSettings["con_MES"];
OleDbConnection conn = new OleDbConnection(str);
using (conn)
{
conn.Open();
try
{
if (conn.State == ConnectionState.Open)
{
string sql1 = "insert into fruits (name, place, amount) values (‘椰子‘, ‘海南‘, ‘500‘)";
string sql2 = "update pingtable set targetip=‘192.168.55.55‘ where id=1102";
OleDbCommand command1 = new OleDbCommand(sql1, conn);
OleDbCommand command2 = new OleDbCommand(sql2, conn);
command1.ExecuteNonQuery();
command2.ExecuteNonQuery();
MessageBox.Show("成功插入");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
MessageBox.Show("关闭连接");
单个Connection连接事务的多表增删改
string str = ConfigurationManager.AppSettings["con_MES"];//连接字符串 OleDbConnection conn = new OleDbConnection(str); using (conn) { conn.Open(); OleDbTransaction OT=conn.BeginTransaction();//打开连接后才能赋值给事物 try { if (conn.State == ConnectionState.Open) { string sql1 = "insert into fruits (name, place, amount) values (‘椰子‘, ‘海南‘, ‘500‘)"; string sql2 = "update pingtable set targetip=‘192.168.55.55‘ where id=1102"; OleDbCommand command1 = new OleDbCommand(sql1, conn, OT); OleDbCommand command2 = new OleDbCommand(sql2, conn, OT); command1.ExecuteNonQuery(); command2.ExecuteNonQuery(); OT.Commit(); //事务一定要有提交和回滚 MessageBox.Show("成功插入"); } } catch (Exception ex) { OT.Rollback(); MessageBox.Show(ex.Message); } finally { conn.Close(); //using原本可以关闭连接，这里提前手动加了个关闭是为了尽早的关闭连接,这个finally方法可以不写 MessageBox.Show("关闭连接"); } }
抽出模板
using (OracleConnection connection = new OracleConnection(connectionString))
{
connection.Open();
OracleTransaction transaction;
transaction = connection.BeginTransaction();
OracleCommand command = connection.CreateCommand();
try
{
transaction.Commit();
}
catch (Exception e)
{
transaction.Rollback();
throw e;
}
finally
{
connection.Close();
}
}
