PollingServiceBase.cs

namespace your_project_name
{    
    using System.Threading;

    public abstract class PollerServiceBase : System.ServiceProcess.ServiceBase {
        protected Thread workerThread = null;
        protected AutoResetEvent finishedEvent = new AutoResetEvent(false);

        public PollerServiceBase(string serviceName) {

            if(string.IsNullOrEmpty(serviceName)) {
                throw new System.ArgumentNullException(paramName: "serviceName", message: "service name is required!");
            }

            this.ServiceName = serviceName;
            this.CanStop = true;
            this.AutoLog = true;
            this.EventLog.EnableRaisingEvents = true;
        }

        protected override void OnStart(string[] args) {
            this.finishedEvent.Reset();
            this.workerThread = new Thread(this.Poll);
            this.workerThread.Start();
        }

        protected override void OnStop() {
            this.finishedEvent.Set();
            if(!this.workerThread.Join(2000)) {
                this.RequestAdditionalTime(5000);
            }
        }

        protected abstract void Poll();
    }
}