Timer.Tick event not firing

[Jason]

I have an application that uses a timer. I've created a function
called TickEvent that I "assigned" to the timer1.Tick event:

this.timer1.Int erval = 1000;
this.timer1.Tic k += new System.EventHan dler(this.TickE vent);
....
private void TickEvent(objec t sender, System.EventArg s e)
{
liSecondsElapse d++;
DateTime lsTime = Convert.ToDateT ime(liSecondsEl apsed);
lblTimer.Text = lsTime.Hour.ToS tring() + ":" +
lsTime.Minute.T oString() + ":" + lsTime.Second.T oString();
lblTimer.Refres h();
}

In my main click event, I have the following:

private void miGetAceMap_Cli ck(object sender, System.EventArg s e)
{
lsCurrentFolder Path = lsRootFolderPat h;
txtOutput.Visib le = true;

ThreadStart timerWorker = new ThreadStart(Sta rt_Timer);
Thread tTimer = new Thread(timerWor ker);
tTimer.Start();

ThreadStart worker = new ThreadStart(Get _Folders_Simple );
Thread t = new Thread(worker);
t.Start();

t.Join();
tTimer.Join();
timer1.Stop();
this.lblStatus. Text = "Complete";
liFolderCounter--;
lblFolderCount. Text = "Found " + liFolderCounter .ToString() + "
folders";
}

private void Start_Timer()
{
timer1.Enabled = true;
timer1.Start();
}

My TickEvent doesn't ever seem to fire because the elapsed time is
never displayed in the lblTimer label.

Can someone please help???

Thanks!

[Willy Denoyette [MVP]]

"Jason" <ja************ *@hotmail.com> wrote in message
news:11******** *************@g 14g2000cwa.goog legroups.com...

I have an application that uses a timer. I've created a function
called TickEvent that I "assigned" to the timer1.Tick event:

this.timer1.Int erval = 1000;
this.timer1.Tic k += new System.EventHan dler(this.TickE vent);
...
private void TickEvent(objec t sender, System.EventArg s e)
{
liSecondsElapse d++;
DateTime lsTime = Convert.ToDateT ime(liSecondsEl apsed);
lblTimer.Text = lsTime.Hour.ToS tring() + ":" +
lsTime.Minute.T oString() + ":" + lsTime.Second.T oString();
lblTimer.Refres h();
}

In my main click event, I have the following:

private void miGetAceMap_Cli ck(object sender, System.EventArg s e)
{
lsCurrentFolder Path = lsRootFolderPat h;
txtOutput.Visib le = true;

ThreadStart timerWorker = new ThreadStart(Sta rt_Timer);
Thread tTimer = new Thread(timerWor ker);
tTimer.Start();

ThreadStart worker = new ThreadStart(Get _Folders_Simple );
Thread t = new Thread(worker);
t.Start();

t.Join();
tTimer.Join();
timer1.Stop();
this.lblStatus. Text = "Complete";
liFolderCounter--;
lblFolderCount. Text = "Found " + liFolderCounter .ToString() + "
folders";
}

private void Start_Timer()
{
timer1.Enabled = true;
timer1.Start();
}

My TickEvent doesn't ever seem to fire because the elapsed time is
never displayed in the lblTimer label.

Can someone please help???

Thanks!

What are you doing in Get_Folders_Sim ple?
Is it possible that this thread procedure retuns before the timer expires?
I see no reason to start a timer using a thread, threads are expensive
resources you know!

Willy.

[Jason]

Well, I just learned how to use threads, so I thought why not...

This is also my first time with the Timer control. I thought the
instance of the timer ran until you manually stopped it?

Anyway, this is the Get_Folder_Simp le function. It's recursive and
finds all of the NTFS permissions of a given folder and all of it's
subfolders. Then it places all of the NTFS information into a typed
DataSet that can be exported to XML.

private void Get_Folders_Sim ple()
{
txtOutput.Text += lsCurrentFolder Path + System.Environm ent.NewLine;
string[] laSplit = lsCurrentFolder Path.Split('\\' );
string lsName = laSplit[laSplit.GetUppe rBound(0)];

DataRow loDRsubDirector y = dsDirectory.Tab les[0].NewRow();
loDRsubDirector y["ID"] = liFolderCounter ;
loDRsubDirector y["Name"] = lsName;
loDRsubDirector y["Path"] = lsCurrentFolder Path;
dsDirectory.Tab les[0].Rows.Add(loDRs ubDirectory);

string lsString = lsCurrentFolder Path.Replace(@" \", @"\\");
ManagementObjec t lfs = new
ManagementObjec t(@"Win32_Logic alFileSecurityS etting.Path='" + lsString
+ "'");

ManagementBaseO bject outP = lfs.InvokeMetho d("GetSecurityD escriptor",
null, null);
if (((uint)(outP.P roperties["ReturnValu e"].Value)) == 0)
{
ManagementBaseO bject Descriptor =
((ManagementBas eObject)(outP.P roperties["Descriptor "].Value));
ManagementBaseO bject[] DaclObject =
((ManagementBas eObject[])(Descriptor.Pr operties["Dacl"].Value));
DumpACEs(DaclOb ject);
}
liFolderCounter ++;

DirectoryInfo d = new DirectoryInfo(l sCurrentFolderP ath);
DirectoryInfo[] dis = d.GetDirectorie s();
foreach(Directo ryInfo di in dis)
{
try
{
lsCurrentFolder Path = di.FullName.ToS tring();

this.lblStatusL abel.Text = "Enumeratin g folder: ";
this.lblStatusL abel.Refresh();
this.lblStatus. Text = lsCurrentFolder Path;
this.lblStatus. Refresh();
Get_Folders_Sim ple();
}
catch (Exception ex)
{
MessageBox.Show (ex.Message, "Error parsing folder " +
lsCurrentFolder Path);
this.Close();
}
}
}

[Jason]

Also, I've tried enabling and starting the timer in the main thread and
it still doesn't seem to work.

[Willy Denoyette [MVP]]

"Jason" <ja************ *@hotmail.com> wrote in message
news:11******** *************@g 43g2000cwa.goog legroups.com...

Well, I just learned how to use threads, so I thought why not...

This is also my first time with the Timer control. I thought the
instance of the timer ran until you manually stopped it?

Anyway, this is the Get_Folder_Simp le function. It's recursive and
finds all of the NTFS permissions of a given folder and all of it's
subfolders. Then it places all of the NTFS information into a typed
DataSet that can be exported to XML.

private void Get_Folders_Sim ple()
{
txtOutput.Text += lsCurrentFolder Path + System.Environm ent.NewLine;
string[] laSplit = lsCurrentFolder Path.Split('\\' );
string lsName = laSplit[laSplit.GetUppe rBound(0)];

DataRow loDRsubDirector y = dsDirectory.Tab les[0].NewRow();
loDRsubDirector y["ID"] = liFolderCounter ;
loDRsubDirector y["Name"] = lsName;
loDRsubDirector y["Path"] = lsCurrentFolder Path;
dsDirectory.Tab les[0].Rows.Add(loDRs ubDirectory);

string lsString = lsCurrentFolder Path.Replace(@" \", @"\\");
ManagementObjec t lfs = new
ManagementObjec t(@"Win32_Logic alFileSecurityS etting.Path='" + lsString
+ "'");

ManagementBaseO bject outP = lfs.InvokeMetho d("GetSecurityD escriptor",
null, null);
if (((uint)(outP.P roperties["ReturnValu e"].Value)) == 0)
{
ManagementBaseO bject Descriptor =
((ManagementBas eObject)(outP.P roperties["Descriptor "].Value));
ManagementBaseO bject[] DaclObject =
((ManagementBas eObject[])(Descriptor.Pr operties["Dacl"].Value));
DumpACEs(DaclOb ject);
}
liFolderCounter ++;

DirectoryInfo d = new DirectoryInfo(l sCurrentFolderP ath);
DirectoryInfo[] dis = d.GetDirectorie s();
foreach(Directo ryInfo di in dis)
{
try
{
lsCurrentFolder Path = di.FullName.ToS tring();

this.lblStatusL abel.Text = "Enumeratin g folder: ";
this.lblStatusL abel.Refresh();
this.lblStatus. Text = lsCurrentFolder Path;
this.lblStatus. Refresh();
Get_Folders_Sim ple();
}
catch (Exception ex)
{
MessageBox.Show (ex.Message, "Error parsing folder " +
lsCurrentFolder Path);
this.Close();
}
}
}

I see two major problems with your code:
1. you are updating the UI from a NON UI Thread, this is not allowed in
Windows, you should marshal the call using Control.Invoke or BeginInvoke.
2. What if an exception is being thrown in the firts part of the thread
procedure? The procedure will return and the Timer will be stopped probably
before it gets fired the first time.
I suggest you start debugging ;-)

Willy.

[Jason]

Can you supply any examples of marshalling? Is this the same as
delegates? I tried using delegates to update the UI from the child
thread from examples off of MSDN, but couldn't ever get it to work.