Re: backgroundWorker1_ProgressChanged does not raise. - C# Discussion Boards

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 1:48

hi i have a backgroundWorker object in my form, and set WorkedReportProgress to true and write this code for some eventhandlers :
<code>private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
int i = 0;
while (i < 1000)
{
this.backgroundWorker1.ReportProgress(i); // not trigged
i++;
}
}

private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
this.toolStripStatusLabel1.Text = e.ProgressPercentage.ToString();
}
</code>

when i trace my app in runTime, in while loop, i call backgroundWorker1.ReportProgress method to raise
backgroundWorker1_ProgressChanged, but it does not raise, where does my problem and how to solve it ?
thanks

Rocky#26-Dec-07 1:59

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 1:59

haveu added the event handler like this
backgroundWorker1.ProgressChanged+= new EventHandler(backgroundWorker1_ProgressChanged)

I think this could be the problem

Rocky

Success is a ladder which you can't climb with your hands in your pockets.

hdv21226-Dec-07 2:00

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 2:00

thanks
where i write your suggestion code ?

Rocky#26-Dec-07 2:01

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 2:01

write it in the page_load method or the constructor

hope it helps

Rocky

Success is a ladder which you can't climb with your hands in your pockets.

hdv21226-Dec-07 2:06

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 2:06

thanks
i write your code in Form1_Load :
this.backgroundWorker1.ProgressChanged += new EventHandler(this.backgroundWorker1_ProgressChanged);
but the follwoing error has shown me :
No overload for 'backgroundWorker1_ProgressChanged' matches delegate 'System.EventHandler'

Rocky#26-Dec-07 2:11

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 2:11

ok try doing it in this sequence

type
1) this.backgroundWorker1.ProgressChanged+=
2) then as soon as u press the = key you'll see a tooltip
3) press tab twice

Rocky

Success is a ladder which you can't climb with your hands in your pockets.

Rocky#26-Dec-07 2:16

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 2:16

BackgroundWorker w = new BackgroundWorker();<br />
            w.ProgressChanged += new ProgressChangedEventHandler(w_ProgressChanged);

ok now I've checked it on my system.
that's the code

Rocky

Success is a ladder which you can't climb with your hands in your pockets.

hdv21226-Dec-07 2:38

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 2:38

thanks for reply
but my problem was not solved.
i call ProgressChanged event handler manually, and solve problem :

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)<br />
{                <br />
	int i = 0;<br />
	while (i < 1000)<br />
	{<br />
		//this.backgroundWorker1.ReportProgress(i);<br />
		this.backgroundWorker1_ProgressChanged(null, new ProgressChangedEventArgs(i,i));<br />
		i++;<br />
	}<br />
}

but why it does not raise ?
thanks

Rocky#26-Dec-07 2:50

Re: backgroundWorker1_ProgressChanged does not raise.

26-Dec-07 2:50

this.backgroundWorker1.ReportProgress(i);

you shuld be using this to report progress as this will raise the ProgressChanged event which will inturn invoke the method refered to by the delegate given at the top (when u did something like

w.ProgressChanged += new ProgressChangedEventHandler(w_ProgressChanged);
)

rest of the logic is upto u but tryin this

hdv212 wrote:
this.backgroundWorker1_ProgressChanged(null, new ProgressChangedEventArgs(i,i));

is simply meaningless

Rocky

Success is a ladder which you can't climb with your hands in your pockets.

Judah Gabriel Himango26-Dec-07 5:24

Judah Gabriel Himango

26-Dec-07 5:24

Do you have ProgressChanged event handler setup, e.g. backgroundWorker1.ProgressChanged += .... ?

Another thing to remember is that ReportProgress will call your handler asynchronously; it won't block the background thread.

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problem with TopMost Property of forms ?

cmpeng3426-Dec-07 1:41

cmpeng34

26-Dec-07 1:41

hi all,
this may be a silly question but i'd like to know if there exists a solution or not.

the question is: i have 2 different applications (each contains just 1 form and both have their TopMost property set TRUE)

both work great (remain on top of all open applications) separately.

but if i start them one after another, the latter remains on top of all unless i don't click to the former on status bar.

i wonder if i am able to set priority between such forms ?
let's assume app1 and app2 and both have topmost property true.
but i'd like to have app1 that has higher priority than app2 or vice versa ?

thanks in advance.
bye.

MFA

Re: problem with TopMost Property of forms ?

Rocky#26-Dec-07 2:00

Re: problem with TopMost Property of forms ?

26-Dec-07 2:00

ohh jeez that's a difficult one mate Smile | :)

I think u can't set any priority but may be there's some guru out there who can do such a thing but to me it looks quite difficult if not impossible

Rocky

Success is a ladder which you can't climb with your hands in your pockets.

PIEBALDconsult26-Dec-07 8:01

PIEBALDconsult

26-Dec-07 8:01

Don't use TopMost, it's user hostile.

C# marquee control needed

Member 351000126-Dec-07 1:12

Member 3510001

26-Dec-07 1:12

Hi! I'm making a program in C# but have some trouble.
I want to use marquee control, but .Net doesn't provide marquee control.
I've searched for that, but I found some commercial controls or broken download link to free control - "Marquee Label .Net Component 1.0" by Ning Zhao.

Is there anyone who has "Marquee Label .Net Component 1.0" or something like that?
Thank you for any help.

Sun Rays26-Dec-07 1:31

Sun Rays

26-Dec-07 1:31

Hi,
you can use marque in aspx page.
Its working fine, you will get red line (error underline) but it will work.

<marquee>Hello World!</marquee><br />

Thanks,
Sun Rays

To get something you must have to try once.

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N a v a n e e t h26-Dec-07 1:34

N a v a n e e t h

26-Dec-07 1:34

Sun Rays ou can use marque in aspx page.

Looks like OP is asking for windows applications.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

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N a v a n e e t h26-Dec-07 1:34

N a v a n e e t h

26-Dec-07 1:34

Use a timer and move the label. It will look like a marquee.

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia

My Website | Ask smart questions

DannyAdler26-Dec-07 1:55

DannyAdler

26-Dec-07 1:55

Hi there,

Found this the other day:
http://www.codeproject.com/KB/miscctrl/csmarquee.aspx?df=100&forumid=14623&exp=0&select=424537[^]

Danny