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I am using the System.Threading.Timer timer.
Now if I have a interval set quite low say 10ms it is possible for my timer event handler to be queued as they cannot be prcessed because the UI thread is busy or another application is running. When the UI thread becomes free it then processes all the queued events at the same time.
Is it possible to determine programmatically the number of timer event handlers that are being queued. I want to be able to determine when there is a build up of queued event handlers.
Some code to demonstrate this would be useful.
Also, is it possible to limit the number of timer event handlers that are queued?
Thanks,
Liam
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The Timer your using doesn't use events at all, so what your asking is pointless. The Timer "Tick" calls your code directly using a seperate thread out of the thread pool for each "Tick".
But, if you were referring to the Forms-based Timer, that uses a Timer Tick event.
LiamD wrote: Is it possible to determine programmatically the number of timer event handlers that are being queued. I want to be able to determine when there is a build up of queued event handlers.
No. I think you're limited to Peeking at the next message in the message pump, without actually processing it. I don't think you can peek at the entire message queue. Also, this process would take longer than the 10ms you have between events.
LiamD wrote: Also, is it possible to limit the number of timer event handlers that are queued?
No, it's not. The best you can do to prevent a stack of tick events is to disable the timer at the beginning of your Tick event handler code, then reenable it at the end. This will, of course, throw off your 10ms pace, but your code will be executing the Tick event as fast as possible. 10ms is not alot of time to do much.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hi every one,
I am trying to develop a windows application which will run on touch screen LCD monitor.
but the touch screen requires bigger option button,check boxes, tab pages, scroll bars etc. in such a way that the enduser select the controls using his finger.
How can i adapt the .net windows controls for the touch screen application (like changing size,graphics etc.,)?
or is there any special controls available for touch screen in .net?
or is there any tool available to convert the normal controls to touch screen controls??
Please help...
Thanks & Regards,
Srini
srini
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Hi All,
I have a customised installer class inherited from System.Configuration.Install.Installer class.
Customised installer class again works as a base class for CustomInstallerExtended class which in turn is a base class for module wise installers as per my requirement.
Scenario is like this:
MyCustomInstaller inherits System.Configuration.Install.Installer
MyCustomInstallerExtended inherits MyCustomInstaller
InventoryInstaller inherits MyCustomInstallerExtended
I wanted some "custom action" before uninstallation of my inventory module. Say for example I want to execute some stored procedure before uninstallation.
In this case if a public overridable method say "OnBeforeUnInstallation" is given in MyCustomInstallerExtended class, which internally gets called on protected method "OnBeforeUnInstall" or any other relevant method given by windows installer, then the custom code can be written in the public overridden method "OnBeforeUnInstallation" in InventoryInstaller.
OnBeforeUnInstall method being a protected overridable method of windows installer class,it will not get fired in MyCustomInstallerExtended class.
AnyOne please help me out to know how OnBeforeUnInstall method can be used effectively to over come my problem statement or is there any other way out to solve the above mentioned problem?
HV
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Hello!
I want to draw points and lines in a picturbox previously loaded with an image. (C#.NET 2k3)
I am trying to do something like drawing a red point where I click on the image. I do this, for example, in the MouseUp event, but nothing happens:
Graphics graph = Graphics.FromImage(pictureBoxHM.Image);
graph.DrawEllipse(new Pen(Color.Red),400,400,400,400);
pictureBoxHM.Update();
Any clues, please?
Thanx in advance!
-- modified at 20:03 Wednesday 4th January, 2006
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It's amazing to me how many people continue to use a picture box when they move beyond what it's designed for. Why not just keep a bitmap in memory, and draw it yourself ?
Christian Graus - Microsoft MVP - C++
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Hi there!
I'm developing an application with C#.NET 2003 and I want to use a web service I just created on the same computer to test it.
What I've done is to add the web reference (called "localhost" as default). Now I want to declare an instance of that service "localhost.Service1 s = new localhost.Service1();"
but the code preprocessor can't see it. When I try to compile it tells me a reference might be missing, but I actually added it.
I tried to create a new project, and it does add it correctly. Why in my application it doesn't? It's a windows form app.
Help, please! 
NOTE: I just observed that localhost namespace is different! How can I change it????
-- modified at 12:55 Wednesday 4th January, 2006
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Hello sergestusxx,
I think there is no problem in ur application. Only thing is make sure that how you are adding the web reference.
When you adding web service url in web reference dialog box, botton right corner there you have to mention the proxy namespace Name(suppose ttt), press OK.
go to your code there
ttt.Service1 s = new ttt.Service1();
regards
GV Ramana
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Free Visual Basic.NET videos at http://www.vbdotnet.somee.com
please reply for any ideas or comments
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HI, i've explained my problem earlier - http://codeproject.com/script/comments/forums.asp?forumid=1650&fr=26&select=1320834#xx1320834xx.
Here it's briefly. i have an assembly that is put there:
http://195.234.68.210/Test/index.html
http://195.234.68.210/Test/ImageEditor.dll
I add the code group to the "Runtime security policy" node in .Net configuration 1.1 applet
like it's discussed here:
http://www.developer.com/security/article.php/11580_3483866_1
But my applet still requests for the permissions: UIPermission, WebPermission
while it was already added.
This page will be given to many users - and i will probably need to give them deployment package or whatever. but still i can't tune this to fun on 1 pc
How should I trust this assembly?
Thanks for help.
I'm also ruzzled-duzzled. in the exception box it's shown PublicKeyToken=b77a5c561934e089 failed.
while sn -Tp ImageEditor.dll produces:
Microsoft (R) .NET Framework Strong Name Utility Version 1.1.4322.573
Copyright (C) Microsoft Corporation 1998-2002. All rights reserved.
Public key is
0024000004800000940000000602000000240000525341310004000001000100931a11a77ea931
e6dbcc2747b1589b9c0e7076f915e3af354131e51ae6735d224d2cfcf43b67bdab7f3da769c8d4
aa6abfdb2ed78c2275167a021e6f33a59af01142404b5b98992db1dc2c3f2b93d68519c0e58af1
7cf586326c3449e93558348060b6152356c2215113940924fe2da127cbea5831657b6957b9757e
7f962bb9
Public key token is 3d6337e9d618e58d
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Hi all:
I'm developing Smart phone demo project, but I encounter some problem as follow:
The compiler complains about the following code, for
" Error 1 error LNK2019: unresolved external symbol lstrlenA referenced in
function "wchar_t * __cdecl _com_util::ConvertStringToBSTR(char const
*)"
"
But I don't know how to fix it!
int COlog::CreateXml(char* strFileName, char* strTime, char* strRes)
{
char m_szPath[MAX_PATH];
MSXML::IXMLDOMElementPtr Root;
Root = m_pDoc->createElement("RunInfo");
m_pDoc->appendChild(Root);
MSXML::IXMLDOMElementPtr Res;
Res = m_pDoc->createElement("Result");
Root->appendChild(Res);
Res->Puttext(strRes);
MSXML::IXMLDOMElementPtr Time;
Time = m_pDoc->createElement("Begin");
Root->appendChild(Time);
Time->Puttext(strTime);
_snprintf( m_szPath, sizeof(m_szPath), "%s.XML", strFileName);
_variant_t varString = (m_szPath);
m_pDoc->save(_bstr_t(strFileName));
return 1;
}
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Hi All,
From my system, I want to stop / start the IIS of different machine and that machine may be on different domain. I have written the following code, it works for my system and it does not work for othe system. It would be great help if you can give some idea.
private bool IISReset(bool start, string machineName)
{
string arguments = string.Empty;
if (start == true) arguments = machineName + " /start";
else arguments = machineName + " /stop";
try
{
//setting the password
System.Security.SecureString pw = new System.Security.SecureString();
char ch1 = 'm';
pw.AppendChar(ch1);
ch1 = 'd';
pw.AppendChar(ch1);
ch1 = 'm';
pw.AppendChar(ch1);
ch1 = 'f';
pw.AppendChar(ch1);
ch1 = 't';
pw.AppendChar(ch1);
ch1 = '@';
pw.AppendChar(ch1);
ch1 = '1';
pw.AppendChar(ch1);
ch1 = '2';
pw.AppendChar(ch1);
ch1 = '3';
pw.AppendChar(ch1);
string domain = "MyDomain";
Process process = Process.Start("iisreset", arguments, "maaz", pw, domain);
process.WaitForExit();
return true;
}
catch (System.Exception ex)
{
return false;
}
}
Vishal Modi
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How can you stop other machine's IIS? This is not possible unless until you are able to run this code on the desired machine.
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IISReset command supports to stop/start the IIS which is running on other system. We have tried it on the same network, but there is some problem when we tried to stop/start IIS on different domain.
It is our project requirement, we have to upload some files and before that we have to stop that IIS.
Vishal Modi
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i have already added a simple menubar to my project now i need to make its look & feel good so i wanted to put ultratoolbar into my project .can u please tell me how to add an exisiting simple mainmenu to a ultra menubar manager.i need to write the code in c# so please tell me the appropriated command for inserting mainmenu into ultramenubar
its urgent please help
thanks and regards
vasudevan
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Does anyone here happen to know of any code that will shorten a path stored in a string?
I have found tons of examples using a StringFormatter that all seem to be centered around drawing the the text using GDI+ but I am not interested in that right now. I don't want to roll my own label control at this point, just try to put a long path into one 
I will have to build one myself I guess...
(unless some nice person happens to know where one is by the time I get home )
George Carlin wrote:
"Don't sweat the petty things, and don't pet the sweaty things."
Jörgen Sigvardsson wrote:
If the physicists find a universal theory describing the laws of universe, I'm sure the a**hole constant will be an integral part of that theory.
My Blog[^]
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Hello,
I've written a reflection app. When I run it on some machines it issues a method invocation error. After some checking I've discovered that the problem is that the Windows EventLog is "full."
But I don't care about the event log and I have zero code that refers to it. How do I tell my app to disregard the eventlog? Is there a global setting somewhere?
Thanks in advance!
PhrankBooth
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PhrankBooth wrote: After some checking I've discovered that the problem is that the Windows EventLog is "full."
Where did you find this little tidbit of information?
All you can do is change the Event Log properties in EventVwr. I don't have any problems with each event log set to "Overwrite events as needed" with a 1024 maximum size for each log.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hi all,
I have a "Managed Extensions" assembly written in VC++ (Visual Studio 2003 - VS7) that so far was build for .Net framework 1.1 customers.
Since all the other assemblies developers in my project already moved to Visual Studio 2005 (VS8) with .Net framework 2.0 , and they want to reference my assembly as "project reference", I have to upgrade the prj file for Visual Studio 2005.
On the other hand, I need that my assembly will be able to be referenced as "dll reference" for VS7 developers, and will be able to run for .Net framework 1.1 customers.
In the following URL I found the answer for regular (c#) assemblies: http://weblogs.asp.net/israelio/archive/2005/06/08/410811.aspx
Any ideas?
Thanks a lot!
Adi
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i think you need to specify the minimum .NET version 1.1 in the <assemblyname>.config file
but still use vs2003 to compile it.
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Hi!
I want to draw a Map for a Webgame (C#, VWD 2005 EE). I draw Lands, units...
But unfortunatly the borders of the String are not "clearly", good, drawn, as you can see at the link of the german csharp forum. There is a picture where you can see what I mean.
http://www.mycsharp.de/wbb2/thread.php?threadid=13557[^]
So I create the Graphics Device.
G_WorldMap = new Bitmap(3500, 2000, PixelFormat.Format32bppArgb);<br />
Graphics newBmpGraphics = Graphics.FromImage(G_WorldMap);<br />
So I draw the strings
foreach (Land land in G_Game.Lands.LandsAL)<br />
{<br />
Font font = new Font("Comic Sans MS", 10);<br />
SizeF stringSize = newBmpGraphics.MeasureString(land.Name, font);<br />
newBmpGraphics.DrawString(land.Name, font, new SolidBrush(Color.Black),<br />
new Point(land.CenterX - (int)(stringSize.Width / 2), land.CenterY - (int)(stringSize.Height / 2)));<br />
<br />
font = new Font("Courier", 12, FontStyle.Bold);<br />
stringSize = newBmpGraphics.MeasureString(land.Id.ToString(), font);<br />
<br />
newBmpGraphics.DrawString(land.Id.ToString(), font, new SolidBrush(Color.Black),<br />
new Point(land.CenterX - (int)(stringSize.Width / 2),<br />
3 + (int)stringSize.Height + land.CenterY - (int)(stringSize.Height / 2)));<br />
}<br />
Any ideas ?
lg ifoko
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Set the graphics objects quality settings before drawing to it: (I used G where you have newBmpGraphics)
Graphics G = Graphics.FromImage(bmp);<br />
G.PageUnit = GraphicsUnit.Pixel;<br />
G.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;<br />
G.CompositingQuality = CompositingQuality.HighQuality;<br />
G.CompositingMode = CompositingMode.SourceCopy;<br />
G.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;<br />
G.InterpolationMode = InterpolationMode.High;
Absolute faith corrupts as absolutely as absolute power
Eric Hoffer
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke
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Thx a lot, it is better now.
There is some "interpolation" at borders from the strings and the polygons, which I want to turn off complete.
A new picture is at http://www.mycsharp.de/wbb2/thread.php?postid=72430#post72430[^]
Do you have a link where I can read (good explained) what setting has which effects ? Example ?
lg ifoko
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Best I can suggest is to refer to the MSDN help for the valious properties, or do what i did and pay around with the possibilities until you find the combination you like.
Absolute faith corrupts as absolutely as absolute power
Eric Hoffer
All that is necessary for the triumph of evil is that good men do nothing.
Edmund Burke
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