ado.net2.0的SqlTransaction使用方法

/////ado.net1.0中使用Transacation（事务)

string connectionString = "database=Northwind;pwd=admin;uid=sa;server=DATABASE-VPC\\SQL2005";

            using (SqlConnection conn = new SqlConnection(connectionString))

            {

                conn.Open();

                SqlTransaction transaction = conn.BeginTransaction();

                try

                {

                    using (SqlCommand cmd = new SqlCommand())

                    {

                        cmd.Connection = conn;

                        cmd.CommandType = CommandType.Text;

                        cmd.CommandText = "";

                        cmd.Transaction = transaction;

                        cmd.ExecuteNonQuery();

                        transaction.Commit();//提交事务

                    }

                }

                catch

                {

                    transaction.Rollback();//事务回滚

                }

/////2.0中使用事务

 string connectionString = "database=Northwind;pwd=admin;uid=sa;server=DATABASE-VPC\\SQL2005";

            string connectionStringTwo = "database=Test;pwd=admin;uid=sa;server=DATABASE-VPC\\SQL2005";

            using (TransactionScope transaction = new TransactionScope())//使用事务

            {

                try

                {

                    using (SqlConnection conn = new SqlConnection(connectionString))

                    {

                        using (SqlCommand cmd = new SqlCommand())

                        {

                            cmd.CommandText = "insert into [member] (name) values ('test')";

                            cmd.CommandType = CommandType.Text;

                            cmd.Connection = conn;

                            conn.Open();

                            cmd.ExecuteNonQuery();

                        }

                    }

                    using (SqlConnection conn = new SqlConnection(connectionStringTwo))

                    {

                        using (SqlCommand cmd = new SqlCommand())

                        {

                            cmd.CommandText = "insert into [member] (name) values ('test')";

                            cmd.CommandType = CommandType.Text;

                            cmd.Connection = conn;

                            conn.Open();

                            cmd.ExecuteNonQuery();

                        }

                    }

                    transaction.Complete();//就这句就可以了。

                }

                catch (Exception ex) { MessageBox.Show(ex.Message); }

            }

/*ado.net1.0与ado.net2.0中对比

1.0中不能跨数据库，速度慢

2.0中可以跨数据库，2.0中不再使用com+，速度比1.0快50%（因为它不用把大量的时间消耗在查找在com+中)

2.0中的事务会自动判断使用何种事务（不用您考虑是简单事务还是分部式事务）。

2.0中的Transactions新添加了命名空间。没有com+注册和com+的开销。

*/