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C#中使用SQLiteTransaction批量插入数据至数据库

发布时间 2024-01-08 10:03:17作者: 一贴灵
  1. 使用事务（Transaction）：在插入大量数据时，可以使用事务来提高插入数据的效率。在C#中，可以使用SQLiteTransaction类来开启一个事务，然后使用SQLiteCommand类来执行批量插入操作，最后提交事务。

示例代码如下：

            string sql;
            string tmpTabelName = "dinners";
            string id, name, devicename, department, date, time, flag, type, authortype, userid;
            string connectionString = DBHelperSQLite.connectionString;
            //导入前先清空
            sql = "delete from dinners";
            DBHelperSQLite.ExecuteSql(sql);
            //批量插入
            using (SQLiteConnection connection = new SQLiteConnection(connectionString))
            {
                connection.Open();

                using (SQLiteTransaction transaction = connection.BeginTransaction())
                {
                    using (SQLiteCommand command = connection.CreateCommand())
                    {
                        command.Transaction = transaction;

                        for (int i = 0; i < dataGridView1.RowCount; i++)
                        {
                            name = Convert.ToString(dataGridView1.Rows[i].Cells["姓名"].Value).Trim();
                            devicename = Convert.ToString(dataGridView1.Rows[i].Cells["设备"].Value).Trim();
                            department = Convert.ToString(dataGridView1.Rows[i].Cells["部门"].Value).Trim();
                            date = Convert.ToString(dataGridView1.Rows[i].Cells["日期"].Value).Trim();
                            time = Convert.ToString(dataGridView1.Rows[i].Cells["时间"].Value).Trim();
                            flag = Convert.ToString(dataGridView1.Rows[i].Cells["通行标签"].Value).Trim();
                            type = Convert.ToString(dataGridView1.Rows[i].Cells["识别类型"].Value).Trim();
                            authortype = Convert.ToString(dataGridView1.Rows[i].Cells["权限类型"].Value).Trim();
                            userid = Convert.ToString(dataGridView1.Rows[i].Cells["用户ID"].Value).Trim();
                            //判断各个刷卡时间段；

                            if (time.Length > 2) flag = time.Substring(0, 2);
                            if (",07,08".IndexOf(flag) > 0) flag = "早";
                            if (",10,11,12".IndexOf(flag) > 0) flag = "中";
                            if (",16,17".IndexOf(flag) > 0) flag = "晚";
                            if (",20,21".IndexOf(flag) > 0) flag = "小";
                            if (",23,00,01".IndexOf(flag) > 0) flag = "大";
                            if (",03,04,".IndexOf(flag) > 0) flag = "大";

                            sql = "Insert into " + tmpTabelName + " (name,devicename,department,date,time,flag,type,authortype,userid)";
                            sql += " values('{0}','{1}','{2}','{3}','{4}','{5}','{6}','{7}','{8}')";
                            sql = String.Format(sql, name, devicename, department, date, time, flag, type, authortype, userid);
                            command.CommandText = sql;
                            command.ExecuteNonQuery();
                            command.Parameters.Clear();
                        }

                        transaction.Commit();
                    }
                }
            }
            MessageBox.Show("数据保存完成！");