Simple job in C #. Net

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingSystem.Threading;usingsystem.timers;namespacetestjobs{classProgram {Private Static ReadOnlyCronmon Cronmon =NewCronmon (); Static voidMain (string[] args)            {Start ();        Console.readkey (); }         Public Static voidStart () {Cronmon.addjob (NewJob ()); Cronmon.addjob (NewJob (Ten)); Cronmon.addjob (NewJob (5));        Cronmon.start (); }    }    classJob:cronjobbase {Private int_span =0;  PublicJob () {} PublicJob (intspan):Base(span) { This. _span =span;} protected Override voidExecute () {if(_span = =0) Console.WriteLine ("I am the job, I use the default time to execute!"+datetime.now.tostring ("s")); ElseConsole.WriteLine ("I am job, I interval {0}s execute! {1}", _span, DateTime.Now.ToString ("s")); }     }    InterfaceIcronjob {voidRun (datetime datetime); voidAbort (); }    classCronjobbase:icronjob {Private ReadOnly Object_object =New Object(); PrivateThread _thread; PrivateDateTime _runtime =DateTime.Now; Private  int_span=3;//time interval 3s         Publiccronjobbase () {} PublicCronjobbase (intspan) {_span=span; }         Public voidRun (datetime datetime) {if(_thread! =NULL&& _thread. ThreadState = =threadstate.running)return; if(_runtime.addseconds (_span) >dateTime)return; _runtime=DateTime; _thread=NewThread (Executehandler); _thread.        Start (); }         Public voidAbort () {_thread.        Abort (); }        Private voidExecutehandler () {Try{Execute (); }            Catch(Exception ex) {Throw NewException (ex.            ToString ()); }        }        protected Virtual voidExecute () {}}InterfaceIcronmon {voidaddjob (icronjob job); voidStart (); voidStop (); }    classCronmon:icronmon {Private ReadOnlySystem.Timers.Timer _timer =NewSystem.Timers.Timer ( +); Private ReadOnlyList<icronjob> _jobs =NewList<icronjob>(); PrivateDateTime _last =DateTime.Now;  PublicCronmon () {_timer. AutoReset=true; _timer. Elapsed+=_timer_elapsed; }        Private void_timer_elapsed (Objectsender, Elapsedeventargs e) {            if(DateTime.Now.Second! =_last. Second) {_last=DateTime.Now; foreach(varIteminch_jobs) {Item.                Run (DateTime.Now); }            }        }         Public voidaddjob (icronjob job) {_jobs.        ADD (Job); }         Public voidStart () {_timer.        Start (); }         Public voidStop () {_timer.            Stop (); foreach(varIteminch_jobs) {Item.            Abort (); }        }    }}

Simple job in C #. Net