通常,垃圾收集是一種很好的做法,因爲它可以釋放資源。 如何在下面的代碼的keepingTime
方法中實現正確的垃圾回收?或者,事實上,我甚至需要?!垃圾收集 - 是否需要?
System.Timers.Timer
允許IDisposable接口,所以'using'是一個選項,但不在下面,因爲定時器的範圍需要擴展到訂閱Timer Elapsed事件的方法myTimer_Elapsed
。我已經做了兩次垃圾收集嘗試,但都失敗了,因爲定時器沒有足夠長的時間!
我以前dicussed這段代碼,其他原因,在HERE
public partial class AirportParking : Form
{
//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
//instance variables of the form
System.Timers.Timer myTimer;
private const string EvenText = "hello";
private const string OddText = "hello world";
static int tickLength = 100;
static int elapsedCounter;
private int MaxTime = 5000;
private TimeSpan elapsedTime;
private readonly DateTime startTime = DateTime.Now;
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
public AirportParking()
{
InitializeComponent();
lblValue.Text = EvenText;
keepingTime();
}
//method for keeping time
public void keepingTime() {
myTimer = new System.Timers.Timer(tickLength);
myTimer.Elapsed += new ElapsedEventHandler(myTimer_Elapsed);
myTimer.AutoReset = true;
myTimer.Enabled = true;
myTimer.Start();
//ATTEMPT_1.tried the following unsuccessfully
//using (System.Timers.Timer myTimer = new System.Timers.Timer(tickLength))
//{
// myTimer.Elapsed += new ElapsedEventHandler(myTimer_Elapsed);
// myTimer.AutoReset = true;
// myTimer.Enabled = true;
// myTimer.Start();
//}
//ATTEMPT_2.tried the following unsuccessfully
//myTimer.Elapsed += new ElapsedEventHandler(myTimer_Elapsed);
//myTimer.AutoReset = true;
//myTimer.Enabled = true;
//try
//{
// myTimer.Start();
//}
//finally
//{
// myTimer.Dispose();
//}
}
private void myTimer_Elapsed(Object myObject,EventArgs myEventArgs){
elapsedCounter++;
elapsedTime = DateTime.Now.Subtract(startTime);
if (elapsedTime.TotalMilliseconds < MaxTime)
{
this.BeginInvoke(new MethodInvoker(delegate
{
this.lblElapsedTime.Text = elapsedTime.ToString();
if (elapsedCounter % 2 == 0)
this.lblValue.Text = EvenText;
else
this.lblValue.Text = OddText;
}));
}
else {myTimer.Stop();}
}
}
而你描述的不是一個garbadge集合。 IDisposable與GC無關。 – Euphoric 2012-04-18 07:23:02