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What do you mean by that?
that I should look for global information about the class?
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I mean that if you search through that mystic portal called google on BackgroundWorker and take a look at some of the samples and articles, you'll see how this works and how it might help to solve your issue.
Deja View - the feeling that you've seen this post before.
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The reason I asked you is because I thought maybe you are trying to direct me to problem specific
solution and not such a global shot in the air.
as far as I know, and I don't know much on that subject, a background worker only means it a thread that works in the back, how is that supposed to solve the problem of passing a form component to a
thread other then the one that created it, I don't know, but I am reading some material about that.
if you could direct me to some more problem specific information I will be most grateful.
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Read up on the BackgroundWorker[^] class and it will be come clear. It gives you the option of reporting progress to your UI thread.
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thanks I'll catchup on that
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O.K
I read about background Worker but now I have another question,
my main problem is, that I run ,on my BGWorker, a function from a different class.
I want that function to report progress so I can update the progressBar that belongs to my form.
how do I make it possible for the function to update my outside control, or even call
the reportProgress??
Waiting for your help...
thanks in advanced.
private void OffsetAButton_Click(object sender, EventArgs e)
{
frmPicoBackgroundWorker.DoWork += new DoWorkEventHandler(frmPicoBackgroundWorker_DoWork);
frmPicoBackgroundWorker.ProgressChanged +=new ProgressChangedEventHandler(frmPicoBackgroundWorker_ProgressChanged);
frmPicoBackgroundWorker.RunWorkerAsync(updateProgress);
}
private void frmPicoBackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
PICO.start_ChannelA_Offsetting(ref updateProgress);
frmPicoBackgroundWorker.ReportProgress(updateProgress);
}
private void frmPicoBackgroundWorker_ProgressChanged(object Sender, ProgressChangedEventArgs e)
{
progressBarSampling.Step = updateProgress;
progressBarSampling.PerformStep();
}
these are just samples of the problematic code.
hope it helps you understand what I don't understand
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It would help if your worker method took a parameter which you could pass in the background worker instance. Your worker code then, every once in a while, calls the ReportProgress method on the BackgroundWorker object to fire off the ProgressChanged event.
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Right - here we go, and I'll try not to digress. You have a form that you don't want to be put on hold while you have something else going on, and you want to display a progress bar. Rather than trying to pass the form component to another thread, you should delegate the measurement code to a background thread and handle the update on the main UI. Using the BackgroundWorker class makes the whole issue really easy.
This[^] article gives a sample and was found by googling on BackgroundWorker and progressbar. There are many more examples there.
Deja View - the feeling that you've seen this post before.
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Thanks, now I now what to look for
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Hi
I am (as can be seen from my profile) an aspiring C# programmer/developer. I am living in the UK and am seeking to get in contact with other C# students or experienced programmers. I am close to London and would like to setup some kind of informal study groups with other C# students in the same area.
I am sure there must be people out there with similar needs.
I am currently using this forum to read about coding queries and the like but I would still like some live demonstrations or discussions.
Contact me here if you are interested.
Thanks
Francois Benadie
Francois Benadie
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You should really post this in this[^] forum.
Deja View - the feeling that you've seen this post before.
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I would like to be able to invoke a button_clicked event via the function keys (F1, F2, etc.). Any links to articles or helpful code snippets would be greatly appreciated  thanks everyone.
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Handle the KeyDown event of the form which contains the button and test for the key that was pressed. If it is the function key you want to process, call the event handler of the button
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I added the KeyDown event to the form, and added a breakpoint in the definition, and when I debug it isn't running when I press a key. *looks confused* 
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Examine the e.Keydata property in the event handler to see whether it is equal to functional key or not
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I'm examining the keydata.. but the event isn't being triggered when I press a key. So, the code to examine the key is never running. I have a keydown method set up to run on the keydown event, but for some reason it isnt being executed when I press a key..
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Set KeyPreview property of your form to true
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Alternatively (if applying to a form with menus), add those commands to some menu in the
main menu, and give it the function keys as a shortcut. No coding required!
Luc Pattyn [Forum Guidelines] [My Articles]
this weeks tips:
- make Visual display line numbers: Tools/Options/TextEditor/...
- show exceptions with ToString() to see all information
- before you ask a question here, search CodeProject, then Google
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Hi all sorry for asking, but how do i calculate time"hh:mm:ss" / int(pages) *100.
for example 00:00:10 / 10 *100
Gonna count the time of 100 pages...
big reggards!!
Thanks
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andredani wrote: Hi all sorry for asking, but how do i calculate time"hh:mm:ss" / int(pages) *100.
for example 00:00:10 / 10 *100
Gonna count the time of 100 pages...
Have you taken a look at the DateTime and TimeSpan classes? I suspect that would provide you with the answer.
Good Luck!
It isn't enough to do well in life.
One must do good when and where one can.
Otherwise, what's the point?
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I'd go with what Matthew said.
But why are you multiplying the pages by 100?
Using pseudo-code, you've written:
TimeSpent / NrOfPages * 100
Best regards!
-Larantz-
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The TimeSpan structure has a Ticks property that gives you the time as a long value, and a constructor that takes a long value.
Example:
TimeSpan duration = new TimeSpan(0, 0, 10);
int ticks = (int)duration.Ticks;
int pages = 10;
int calculatedTicks = ticks * 100 / pages;
TimeSpan calculatedTime = new TimeSpan((long)calculatedTicks);
---
single minded; short sighted; long gone;
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I am currently working on a project to develop an application which employees will use to clock in, clock out on break, clock in after break, do the same for lunch, and clock out for the end of the day. This application will record time an employee works, calculate regular and over time then prepare a report for HR so employees can get paid. HR is also able to correct any error the employee may had made, e.g. forgot to log out or login. Employees work by shift thus an employee may start working on one date and end on the following date. I was thinking about creating the calculation logic in SQL as a stored procedure but was advised that doing so may not be best idea. I am not sure where to start on this, besides creating the tables needed for the project in SQL. Any sample or advice on this issue will be greatly appreciated.
Skan
If you knew it would not compile why didn't you tell me?!?!?!
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A simple search will reveal a plethora of examples. It's a common homework assignment.
only two letters away from being an asset
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Mark Nischalke wrote: It's a common homework assignment.
Which is what this would seem to be.
Deja View - the feeling that you've seen this post before.
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