WaitAny( ), Timer and Event fires up problem

[qiangdi_he]

Hi, Pals,

I am using WaitAny( ) to wait for the events triggered by a timer. But
it seems like that when the timer's interval elapsed, and the event was
set, but WaitAny is still waiting there.

Basically, I want the statusBar's text change every 2 seconds. But
since the WaitAny( ) doesn't stop, the statusBar's text changes every
10 seconds which is not what I want.

Thanks in advance.

Willie

The whole code is here:

using System;
using System.Drawing;
using System.Collecti ons;
using System.Componen tModel;
using System.Windows. Forms;
using System.Data;
using System.Timers;
using System.Threadin g;

namespace WindowsApplicat ion1
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows. Forms.Form
{
private System.Windows. Forms.Button button1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.Componen tModel.Containe r components = null;

public ManualResetEven t evtButtonClick = new ManualResetEven t(false);
public ManualResetEven t evtPollTimer;
private System.Windows. Forms.StatusBar statusBar1;
public System.Timers.T imer hPollTimer;

public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeCompo nent();

//
// TODO: Add any constructor code after InitializeCompo nent call
//
}

/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Disp ose();
}
}
base.Dispose( disposing );
}

#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeCompo nent()
{
this.button1 = new System.Windows. Forms.Button();
this.statusBar1 = new System.Windows. Forms.StatusBar ();
this.SuspendLay out();
//
// button1
//
this.button1.Lo cation = new System.Drawing. Point(104, 136);
this.button1.Na me = "button1";
this.button1.Ta bIndex = 0;
this.button1.Te xt = "button1";
this.button1.Cl ick += new System.EventHan dler(this.butto n1_Click);
//
// statusBar1
//
this.statusBar1 .Location = new System.Drawing. Point(0, 244);
this.statusBar1 .Name = "statusBar1 ";
this.statusBar1 .Size = new System.Drawing. Size(292, 22);
this.statusBar1 .TabIndex = 3;
this.statusBar1 .Text = "12345";
//
// Form1
//
this.AutoScaleB aseSize = new System.Drawing. Size(5, 13);
this.ClientSize = new System.Drawing. Size(292, 266);
this.Controls.A dd(this.statusB ar1);
this.Controls.A dd(this.button1 );
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayo ut(false);

}
#endregion

/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run (new Form1());
}

private void button1_Click(o bject sender, System.EventArg s e)
{
evtButtonClick. Set();
bool flag = false;

int iEventCount = 0;

evtPollTimer = null;
while (true)
{
WaitHandle[] DummyWaitEvents = new WaitHandle[2];
iEventCount = 0;
DummyWaitEvents[iEventCount] = evtButtonClick;
if (flag)
DummyWaitEvents [++iEventCount] = evtPollTimer;

WaitHandle[] WaitEvents = new WaitHandle[iEventCount];
System.Array.Co py(DummyWaitEve nts, 0, WaitEvents, 0, iEventCount);

int iIndex = WaitHandle.Wait Any(WaitEvents, 10000, true);

if (evtButtonClick .WaitOne(0, false))
{
evtButtonClick. Reset();
flag = true;

if (evtPollTimer == null)
{
hPollTimer = new System.Timers.T imer();
evtPollTimer = new ManualResetEven t(false);
}
if (flag)
{
SetWaitableTime r(ref hPollTimer, "Poll", 2, 0, null, null,
false);
}

continue;
}

if (evtPollTimer.W aitOne(0, false))
{
if (statusBar1.Tex t == "12345")
statusBar1.Text = "67890";
else
statusBar1.Text = "12345";
evtPollTimer.Re set();
}

}
}

void SetWaitableTime r(ref System.Timers.T imer hTimer, string
strTimerName, long lDueTime, long lPeriod,
string strCompletionRo utine,
string strArgToComplet ionRoutine,
bool bResume)
{
if (lDueTime > 0)
{
hTimer.AutoRese t = true;
}
else
{
hTimer.AutoRese t = false;
}
hTimer.Interval = lDueTime*1000;
if (strTimerName.E quals("Poll"))
{
hTimer.Elapsed += new ElapsedEventHan dler(this.OnPol lTimedEvent);
evtPollTimer.Re set();
}
hTimer.Enabled = true;
hTimer.Start();
}

void OnPollTimedEven t(object source, System.Timers.E lapsedEventArgs
e)
{
//MessageBox.Show ("Poll");
evtPollTimer.Se t();
}
}
}