启用事务操作，解决批量插入或更新sqlite，mssql等数据库耗时问_MySQL

        private void btnImport_Click(object sender, EventArgs e)        {            string filePath = textBox1.Text;            string importPwd = txtPwd.Text;            if (string.IsNullOrEmpty(filePath) || string.IsNullOrEmpty(importPwd))            {                MessageBox.Show("请先导入文件,填写操作密码后,再操作！");            }            else            {                btnImport.Text = "正在导入...";                btnImport.Enabled = false;                string[] allLines = File.ReadAllLines(filePath);                using (SQLiteConnection con = new SQLiteConnection(connStr))                {                    con.Open();                    DbTransaction trans = con.BeginTransaction();//开始事务                       SQLiteCommand cmd = new SQLiteCommand(con);                    try                    {                        for (int n = 0; n 
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