how can i create a countdown timer using C# ? - C# Discussion Boards

17-Jul-08 1:57

System.TimeZoneInfo only in .NET 3.5 onwards.

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Re: Time zones

PIEBALDconsult17-Jul-08 5:03

PIEBALDconsult

17-Jul-08 5:03

If the code is running on the client you could simply use the System.DateTime's .ToUniversalTime method.

And I had expected DateTime to have an Offset property, but I don't see one. To get it you could use something like System.TimeSpan.Parse ( System.DateTime.Now.ToString ( "zzzzz" ) ) (yuck).

I suppose there are better ways of getting the local system's UTC offset, but I haven't need any yet.

usb serial port

samy10017-Jul-08 1:25

samy100

17-Jul-08 1:25

hi,

i wrote an application that sends and receives data via serial port.

when i am connected via the PC real serial port(COM1) everything works fine.

when i connect a USB serail port and try to work with it only short messages work ok. but if i have big messages it doesn't work properlly.

my usb device is ok (i have an old application in MFC that work fine with the USB serial, sending and receiving big packets)

can anyone tell me what could be the reason for it and how can i fix it?
thanks,

Samy

Re: usb serial port

leppie17-Jul-08 1:54

Introduction to Client/Server Programming

17-Jul-08 1:54

Probably your COM port settings. Make sure they are the same as the MFC app. Also check any additional settings.

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Re: usb serial port

Luc Pattyn17-Jul-08 3:14

Luc Pattyn

17-Jul-08 3:14

samy100 wrote:
if i have big messages it doesn't work properlly.

I am curious, I have been using USB-to-RS232C on many occasions, never had any trouble (but
always have short messages, i.e. less than 100 chars)

What is big? at what length does it start to fail?
and what is your baudrate?

You are aware timing is different? the serial data (actual data and control line status) gets
grouped and packetized to make USB transport efficient. So if your code contains some delays,
you may have to increase them a bit.

BTW: not really a C# issue, is it?

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Voting for dummies? No thanks. Dead | X|

Banjo Ayorinde17-Jul-08 0:50

Banjo Ayorinde

17-Jul-08 0:50

Hi,
Have been developing web app using c# and asp.net.
I intend venturing into Client/Server Programming.
Can anyone direct me to where i can get e-books to start? preferably free e-books.
Thanks in anticipation.

Re: Introduction to Client/Server Programming

nelsonpaixao17-Jul-08 12:25

nelsonpaixao

17-Jul-08 12:25

Hi! i´am not an advance programmer but i can give you a little aid.
For a chat app, database? You can search it here you have lots of articles.

keywords:

manage threads (very important)
asynchronous connection = non blocking
sockets

good luck Laugh | :laugh:

how can i create a countdown timer using C# ?

truegilly17-Jul-08 0:25

truegilly

17-Jul-08 0:25

Hi guys,

Im about to start development on a countdown timer that will display the time left for a particular product.

the format will be like this - 00:00:11.

I have been watching the AJAX video tutorials so im thinking of approaching this by setting an updatePannel with a timer with a tick event every 1000ms. Inside the updatePannel i could have a label that is attached to a C# method that contains the countdown logic

2 questions...

1: is this a good way forward or not.

2: can anyone suggest data time classes/methods that i will find useful so for example an admin can enter a start date and an end date and the timer will show the days, hours, minutes and seconds remaining.

the site im trying to emulate is this http://www.telebid.com/ looks like they have AJAX countdown timers too.

thank you for your help

Truegilly

Re: how can i create a countdown timer using C# ?

leppie17-Jul-08 1:52

Re: how can i create a countdown timer using C# ?

17-Jul-08 1:52

truegilly wrote:
AJAX

Head off to ASP.NET forum then...

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Nirandas17-Jul-08 3:28

Nirandas

17-Jul-08 3:28

Can't you use pure javascript for this? That will be lot better I think.
If you want to use C# for this, the TimeSpan class and it's properties will be useful.

Nirandas,
a developer from India.
http://www.nirandas.com

how i can update my application

wasimsharp16-Jul-08 23:51

wasimsharp

16-Jul-08 23:51

hi freind i create a configurator that is use to Update Our Product.
now i want to update my configurator when new update arrived how i can do this without using (ClickOnce Deployment)

wasim khan

Re: how i can update my application

nelsonpaixao17-Jul-08 12:31

nelsonpaixao

17-Jul-08 12:31

Hi, Wasin

Put another post with your code and explain what you want, maybe some advanced programmer can help you there!

Good Luck Big Grin | :-D

Form events

blackjack215016-Jul-08 23:41

blackjack2150

16-Jul-08 23:41

What are the differences between the following events, and which should be used when?

Activated<br />
Load<br />
Shown<br />
Validated

Let's say that you want to perform some actions (run SQL, copy files, etc.) when a form appears, but with no user interaction. In which event handler do you place your code? Thanks.

Re: Form events

wasimsharp16-Jul-08 23:44

wasimsharp

16-Jul-08 23:44

i will do it in Load Event

wasim khan

Re: Form events

nelsonpaixao17-Jul-08 12:35

nelsonpaixao

17-Jul-08 12:35

I usually use "load" or "click" event to trigger it.

WinsockClass - GetData Method is not working

onakar16-Jul-08 23:07

onakar

16-Jul-08 23:07

this function run when the DataArrival event is fired,
but the w1.GetData is not working, and the code never arraive to
"data = (String)dat" part ( no exception)

void w1_DataArrival(int Len)
{
String data = "";
dat = new object()data;
len = (object)Len;

w1.GetData(ref dat, dat, len);
data = (String)dat;
}

Re: WinsockClass - GetData Method is not working

leppie17-Jul-08 1:51

17-Jul-08 1:51

onakar wrote:

void w1_DataArrival(int Len)
{
String data = "";
dat = new object()data;
len = (object)Len;

w1.GetData(ref dat, dat, len);
data = (String)dat;
}

WTF?

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Copy Byte []

half-life16-Jul-08 23:05

16-Jul-08 23:05

Hi,

i have an byte array
i would like to copy from position 7 to 24 to an new byte array

is there a simple way to do it or i'll have to copy each byte ??

Smile | :)

Have Fun
Never forget it

originSH16-Jul-08 23:22

originSH

16-Jul-08 23:22

Have a look at the documentation for the Array[^] class.

half-life17-Jul-08 3:26

17-Jul-08 3:26

THANKS

Have Fun
Never forget it

DaveyM6916-Jul-08 23:25

DaveyM69

16-Jul-08 23:25

Array.Copy(array1, 7, array2, 0, 18);

Dave

half-life17-Jul-08 0:42

17-Jul-08 0:42

THANKS a lot Smile | :)

Have Fun
Never forget it

Guffa17-Jul-08 1:33

Guffa

17-Jul-08 1:33

This is the second question today about something that can easily be found in the documentation or on the web (search for "c# format binary string" and "c# copy part of array" to get the solutions as the first hit). You really should learn how to use google and MSDN Library, and save your forum posts until you need them. Smile | :)

Despite everything, the person most likely to be fooling you next is yourself.

half-life17-Jul-08 5:32

17-Jul-08 5:32

I Will,
Taken in notice Smile | :)

Have Fun
Never forget it

leppie17-Jul-08 2:03