/////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。
*/
