ADO.NET问题

[zf19921020]

我用sqlcommand对数据表进行修改，当时运行的时候是执行成功了，但是修改的操作无法更新到数据表，每次关闭vs之后数据就自动回滚操作了，设置数据库复制到输出目录为从不复制也不得行，怎么办啊？求高手！！

[anzhiqiang_touzi]

开了数据库事务，但是没提交事务

[bdmh]

检查是否有事务控制

[quifar123]

同意楼上

[qiume]

捕捉异常，事务完成后要提交：

private static void ExecuteSqlTransaction(string connectionString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        connection.Open();

        SqlCommand command = connection.CreateCommand();
        SqlTransaction transaction;

        // Start a local transaction.
        transaction = connection.BeginTransaction("SampleTransaction");

        // Must assign both transaction object and connection
        // to Command object for a pending local transaction
        command.Connection = connection;
        command.Transaction = transaction;

        try
        {
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
            command.ExecuteNonQuery();
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
            command.ExecuteNonQuery();

            // Attempt to commit the transaction.
            transaction.Commit();
            Console.WriteLine("Both records are written to database.");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
            Console.WriteLine("  Message: {0}", ex.Message);

            // Attempt to roll back the transaction.
            try
            {
                transaction.Rollback();
            }
            catch (Exception ex2)
            {
                // This catch block will handle any errors that may have occurred
                // on the server that would cause the rollback to fail, such as
                // a closed connection.
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType());
                Console.WriteLine("  Message: {0}", ex2.Message);
            }
        }
    }
}

[Mlovecoding]

事务的原则是开启后就必须回滚或提交！！！不能开启后就不管了！！！

[听可笑的承诺]

没提交事物？