[VB08] Timer Frage

 
// < ------------------------------------------------- >
// < XLib.Timer.cs / C#.Net / 18.03.2007 / ZeRoKiLLeR >
// < ------------------------------------------------- >
 
using System;
using System.Threading;
 
namespace XLib
{
    public class Timer
    {
        /// <summary>
        /// Duration in ms
        /// </summary>
        private Double m_Duration;
 
        /// <summary>
        /// Time left in ms
        /// </summary>
        private Double m_TimeLeft;
 
        /// <summary>
        /// Target method/function after timer finished
        /// </summary>
        private TargetFunction m_Target;
 
        /// <summary>
        /// Tick thread
        /// </summary>
        private Thread m_TickThread;
 
        /// <summary>
        /// State if timer is running
        /// </summary>
        private Boolean m_Running;
 
        /// <summary>
        /// Creates a new timer instance
        /// </summary>
        /// <param name="duration">Duration in ms</param>
        /// <param name="target">Target method/function</param>
        public Timer(Double duration, TargetFunction target)
        {
            try
            {
                // Set values
                this.m_Duration = duration;
                this.m_TimeLeft = 0;
                this.m_Target = target;
                this.m_TickThread = null;
                this.m_Running = false;
            }
            catch (Exception exc)
            {
                // Handle Errors here
            }
        }
 
        /// <summary>
        /// Starts the timer
        /// </summary>
        public void Start()
        {
            try
            {
                // If timer is not running
                if (!this.m_Running)
                {
                    this.m_TickThread = new Thread(new ThreadStart(this.Tick));
                    this.m_TickThread.Name = "XLib.Timer | Tick-Thread";
                    this.m_TickThread.Start();
                    this.m_Running = true;
                }
            }
            catch (Exception exc)
            {
                // Handle Errors here
            }
        }
 
        /// <summary>
        /// Stopps the timer
        /// </summary>
        public void Stop()
        {
            try
            {
                // If timer is running
                if (this.m_Running)
                {
                    // this.m_TickThread.Abort(); -> Throw exception "AbortException" ... 
 
                    this.m_Running = false; // <- FIX
 
                }
            }
            catch (Exception exc)
            {
                // Handle Errors here
            }
        }
 
        /// <summary>
        /// Pause the imer
        /// </summary>
        public void Pause()
        {
            try
            {
                // If timer is running
                if (this.m_Running)
                {
                    this.m_Running = false;
                }
            }
            catch (Exception exc)
            {
                // Handle Errors here
            }
        }
 
        /// <summary>
        /// Tick method
        /// </summary>
        private void Tick()
        {
            try
            {
                // Endless loop
                while (true)
                {
                    // If timer is running
                    if (this.m_Running)
                    {
                        if (this.m_TimeLeft < this.m_Duration)
                        {
                            this.m_TimeLeft += 100;
                        }
                        else
                        {
                            this.m_Target.Invoke();
                            this.m_Running = false;
                        }
                    }
 
                    // Pause thread for 100ms
                    Thread.Sleep(TimeSpan.FromMilliseconds(100));
                }
            }
            catch (Exception exc)
            {
                // Handle Errors here
            }
        }
 
        public delegate void TargetFunction();
    }
}