SQLite使用事务更新—by command

 public void SaveToDB(DataTable dt)
        {

            /* todo:sqlite没有提供批量插入的机制，需要通过事务处理 更新所有数据
             * http://www.cnblogs.com/hbjohnsan/p/4169612.html
             * Eorr 数据库加了锁，执行不了自己的代码。
             */

            string connStr = @"data source=E:\YQSQLite\YQSQLite\Data\YQ.db";
            using (SQLiteConnection conn = new SQLiteConnection(connStr))
            {
                conn.Open();
                using (System.Data.SQLite.SQLiteTransaction trans = conn.BeginTransaction())
                {
                    using (System.Data.SQLite.SQLiteCommand cmd = new SQLiteCommand(conn))
                    {
                        cmd.Transaction = trans;
                        try
                        {
                            foreach (DataRow dr in dt.Rows)
                            {
                                cmd.CommandText = @"insert or ignore into RssItem() values ("+Int32.Parse(dr[0].ToString()) +",'"
                                    +dr[1].ToString()+"','"+dr[2].ToString()+"','"
                                    + dr[3].ToString() + "','" + DateTime.Parse(dr[4].ToString()) + "','"
                                    +dr[5].ToString()+"','"+dr[6].ToString()+"')";
                                cmd.ExecuteNonQuery();

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

                        }
                    }
                }
            }

        }