C# 日常使用整理

输入千分位格式数字 string.Format("数字格式 {0:n2},", 123456789)

这个主要和 IFomatProvider  接口有关，NumberFormatInfo numberFomatProvider = new NumberFormatInfo();

 C# 中各种流的操作【参考别人博客】

https://www.cnblogs.com/JimmyZheng/archive/2012/03/17/2402814.html

定时执行

public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);

            //设置30秒处理一次
            System.Timers.Timer myTimer = new System.Timers.Timer(1000*30);//修改时间间隔
            myTimer.Elapsed += new System.Timers.ElapsedEventHandler(AutoExec);
            myTimer.AutoReset = true;
            myTimer.Enabled = true;

        }
        private void AutoExec(object sender, System.Timers.ElapsedEventArgs e) {
            //插入访问日志记录
            Logtxt log = new Logtxt(AppDomain.CurrentDomain.BaseDirectory + @"/log/APILog/Log.txt");
            log.log("**NowTime**:"+Guid.NewGuid().ToString());
        }
    }

 发送邮件

//from email，to email，主题，邮件内容
            MailMessage mailmessage = new MailMessage("test@centos.com", "886688668@qq.com", "this is a test", "yes!test!");
            mailmessage.Priority = MailPriority.Normal; //邮件优先级
            SmtpClient smtpClient = new SmtpClient("mail.centos.com", 25); //smtp地址以及端口号
            smtpClient.Credentials = new NetworkCredential("test@centos.com", "*******");//smtp用户名密码
            smtpClient.EnableSsl = false; //启用ssl
            smtpClient.Send(mailmessage); //发送邮件
            return Content("发送成功");

 Unix时间戳

            DateTimeOffset BaseTime = new DateTimeOffset(1970, 1, 1, 0, 0, 0, TimeSpan.Zero);
            long unixTime = (long)(DateTime.Now.ToUniversalTime() - BaseTime).TotalSeconds;
            long unixTime3 = (long)(DateTime.Now - BaseTime).TotalSeconds;

            DateTime dt = DateTimeOffset.FromUnixTimeSeconds(unixTime).DateTime;

            return Content("unixTime:" + unixTime.ToString()+ "--unixTime2:"+ unixTime3.ToString()+"*DateTime:"+ dt.ToString("yyyy-MM-dd HH:mm"));