使用dapper进行参数化查询

            using (var connection = new MySqlConnection(connstr))
            {
                //声明动态参数
                DynamicParameters Parameters = new DynamicParameters();
                //开始事务
                IDbTransaction transaction = connection.BeginTransaction();
                try
                {
                    int cnt = 0;
                    string sQuery = "Delete FROM user " + "WHERE User_Id=@Id";
                    //添加参数
                    Parameters.Add("Id", id);
                    connection.Execute(sQuery, Parameters, transaction, null, null);
                    //提交事务
                    transaction.Commit();
                    return true;
                }
                catch (Exception ex)
                {
                    //出现异常，事务Rollback
                    transaction.Rollback();
                    return false;
                    throw new Exception(ex.Message);
                }
            }