如何在5秒暂停时进行无限循环

Question

    string connectionstring = "server =SQLVS2\\SQLVS2;database=DDM;Persist Security Info=True;uid=ddmuser;password=User02+Ddm;";
    SqlConnection myConnection = new SqlConnection(connectionstring);
    SqlCommand myCommand = new SqlCommand("GetNullHash", myConnection);
    myCommand.CommandType = CommandType.StoredProcedure;
    myConnection.Open();
    SqlDataReader rdr = myCommand.ExecuteReader();

   while (rdr.Read())
    {
        string filename = @"\\" + rdr.GetString(3);
        filename = System.IO.Path.Combine(filename, rdr.GetString(2));
        filename = System.IO.Path.Combine(filename, rdr.GetString(1));
        computeHashh1 abc = new computeHashh1();
        Console.WriteLine(abc.computeHash(filename));          
        inserthash insert = new inserthash();
       insert.InsertHash(rdr.GetString(1), abc.computeHash(filename), rdr.GetStr(2),rdr.GetString(3));

    }

我怎么能让这个循环在5秒钟内运行一次或直到停止.

Answer 1

最简单的方法是:

while (true) {
    // code here
    Thread.Sleep(5000);
}

但是,为了更强大,我建议使用适当的计时器的Windows服务.

Answer 2

尝试:

while(true) 
{
    try 
    {
       thread.sleep(5000) 
    } 
    catch(Exception e) 
    {
      //handle the exception 
    }
}

它最简单.

Answer 3

我会包装你的代码并使用一个计时器对象,它允许你控制计时器本身(停止,启动等)

System.Timers.Timer aTimer;
aTimer = new System.Timers.Timer();
aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
aTimer.Interval = 2000;
aTimer.Enabled = true;

private void OnTimedEvent(object source, ElapsedEventArgs e)
{
    //your code
}

更多信息

http://msdn.microsoft.com/en-us/library/system.timers.timer%28v=vs.100%29.aspx