C# Discussion Boards - CodeProject

Re: create a class at runtime and access it immediately

ankita luniya18-Mar-08 0:47

ankita luniya

18-Mar-08 0:47

hey..

thx 4 d info..

thn is it possible to implement mobile agents in C#?..if yes how?

Re: create a class at runtime and access it immediately

Mike Marynowski19-Mar-08 8:02

Mike Marynowski

19-Mar-08 8:02

That depends on the complexity of the mobile agent you are creating.

If you need it to execute arbitrary code, then you will need to use dynamic compilation/reflection.

If you can replicate the entire program at each station and you only need to move its current state, then just copy over a configuration file instead of a .cs file, which allow the next station to load itself into the previous stations state and continue.

Best way to save paths of files ex "pdf" to a database.

KornJoe17-Mar-08 23:59

KornJoe

17-Mar-08 23:59

Hi my names Joe,

Im a newbie and I need to find out the best way to let a user be able to retrieve a list of files from a database, then obviously add a new path to a file.

The files are pdf, i need to know which control would be best to use to retrieve info from a database and then be able to edit and brwose to a directory and select a new file to be added. this info in turn will be terieved by our intranet which will display the pdf.

Donno if anyone might want to help.

Thanks

J

Re: Best way to save paths of files ex "pdf" to a database.

Christian Graus18-Mar-08 0:05

Christian Graus

18-Mar-08 0:05

KornJoe wrote:
then obviously add a new path to a file.

Not sure what this means ? Add a path to what file ?

KornJoe wrote:
i need to know which control would be best to use to retrieve info from a database

No control should be used to do this, you should write code to get data from your database.

KornJoe wrote:
then be able to edit and brwose to a directory

If you want a list of items to edit, a datagrid or grid view is fine. IF you want to browse for folders, you can use a FolderBrowseDialog to do this, and get back the folder path.

KornJoe wrote:
this info in turn will be terieved by our intranet which will display the pdf.

If you want to change the contents of PDFs, you will need to use a third party library. No PDF support is built in.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

distributing client request across set of servers

ankita luniya17-Mar-08 23:57

ankita luniya

17-Mar-08 23:57

hii,

i am developing a client server application in C#..

In this multiple clients can connect 2 server. I am using a set of 4 servers so that the fault tolerance can be increased in case a server is down..its load can be shared by another server i.e. i am developing a distributed application.

now i want to know how these client requests can be distributed across the set of servers.

i mean suppose i want server should handle 25 clients at max...
if 26th client tries 2 connect to it it should redirect the clients to the another server whch is available...and if all servers are busy then display a message all servers busy..

so can u give me the code as to how load balancing can be done among multiple servers.

any help would be appreciated.thanks in advance

ankita luniya

Re: distributing client request across set of servers

Christian Graus18-Mar-08 0:01

Christian Graus

18-Mar-08 0:01

I would expect you'd set up communication from the server that users connect to, to the other servers, and they would keep track of how many connections there are, so that you can distribute them as you go, so it's 2/2/2/2, not 8/0/0/0. Also, I wouldn't expect you to create an arbitrary cutoff, who is to say if 26/26/26/26 would not work just fine ?

Re: distributing client request across set of servers

ankita luniya18-Mar-08 0:15

ankita luniya

18-Mar-08 0:15

yaa...d arbitrary cut off thing is ok...26 ws jus an example...can u exemplify wht u saud wid an example....??

RMI in .Net

sjs4u17-Mar-08 23:44

sjs4u

17-Mar-08 23:44

Hi,

Is it Possible to use RMI(Java Concept) like concept in .Net?

If Yes-How can we used?

If No-Then other solution for that will be?

Thanks

Re: RMI in .Net

m@u18-Mar-08 0:16

m@u

18-Mar-08 0:16

ever heard of google[^]?

How to DragDrop metafile to Word, Excel, Visio.

xxdave17-Mar-08 23:01

xxdave

17-Mar-08 23:01

I'd like to drag metafile from my C# application and drop it in Word, Excel or Visio.

Metafile metafile = new Metafile("meta.emf"); <br />
DataObject data = new DataObject(DataFormats.EnhancedMetafile, metafile); <br />
DoDragDrop(data, DragDropEffects.Move);

I found, that .NET uses new format of the clipboard so older applications cant recognize the dragged .NET metafile.

In this article http://support.microsoft.com/kb/323530[^] is a guide to copy the .NET metafile to the clipboard, so I can paste it later to Word.

But how can I DragDrop this metafile directly to Word ?

CAB File Problem...

daxfrost17-Mar-08 22:48

daxfrost

17-Mar-08 22:48

Hey All,

I need help with this urgently, and any would be much appreciated...

I have a CAB file that gets downloaded from a site to a pocket pc or smartphone...
I need to have data attached to it somehow, just a line of text or something, either
in some seperate file or somehow...

This is because I need to have a changing "serial code" to go out with each download of the CAB...
Thanx a million in advance!

Confused | :confused:

Re: CAB File Problem...

Christian Graus17-Mar-08 23:02

Christian Graus

17-Mar-08 23:02

There are libraries that can open cab files, but another solution is to generate your license codes seperately and design your app so each code is verified online and only works on one machine.

Re: CAB File Problem...

daxfrost17-Mar-08 23:14

daxfrost

17-Mar-08 23:14

Thanx alot for you advice and swift reply Christian!
you rock...

Seems like these would be the only ways, could you direct
me to any of these libraries? and I hope the lib wouldnt
require me to rebuild my application... thanx again!

Verify if printer is installed

AlexB4717-Mar-08 21:53

AlexB47

17-Mar-08 21:53

Hi, how can verify if in my computer is installed / available a printer?
Can help me with example?
Thanks a lot.

Alex

modified on Tuesday, March 18, 2008 5:41 AM

Re: Verify if printer is installed

m@u18-Mar-08 0:20

m@u

18-Mar-08 0:20

Hi
in the System.Drawing.Printing there's a class called PrinterSettings. This class contains a static Property called InstalledPrinters which holds the names of all installed printers.

greets
M@u

Re: Verify if printer is installed

AlexB4718-Mar-08 2:53

AlexB47

18-Mar-08 2:53

Thanks! I try this ..
Wink | ;)

Alex

URL Protocol - one instance application

yarns17-Mar-08 21:45

yarns

17-Mar-08 21:45

Hi,

i registered my own url protocol, something like: test://
But on each click on url it opens new instace of application.
Any idea how to handle all clicked urls in one application instance?

Greetings

Show Counter Runtime

PavanPareta17-Mar-08 21:33

PavanPareta

17-Mar-08 21:33

Hi all,

I have write a program for showing added records, couter. but it does not working/showing during the for loop execution. after stoped loop it will show. but i want to show it as continue (1,2,3 ... 50000).

for (intCounter = 1; intCounter;= 50000; intCounter++)<br />
            {<br />
                lblShowCount.Text = intCounter.ToString();<br />
<br />
                oEmployee.AddRecord();<br />
            }

Please guide me what would be the better approch for showing continue Counter during the loop execution

Pavan Pareta

Re: Show Counter Runtime

fearless stallion17-Mar-08 22:18

fearless stallion

17-Mar-08 22:18

this will do....

for (intCounter = 1; intCounter;= 50000; intCounter++)<br />
{<br />
lblShowCount.Text = intCounter.ToString();<br />
Application.DoEvents();<br />
oEmployee.AddRecord();<br />
}

KSS

Re: Show Counter Runtime

Christian Graus17-Mar-08 22:18

Christian Graus

17-Mar-08 22:18

Calling Application.DoEvents is the easy way to fix this. Putting the AddRecord call in another thread, and having the end of the thread call fire a new one, is the better way.

Re: Show Counter Runtime

Gareth H18-Mar-08 3:36

Gareth H

18-Mar-08 3:36

I thought doing 'Application.DoEvents();' was bad practice?

Regards,
Gareth.

Re: Show Counter Runtime

PavanPareta18-Mar-08 3:24

PavanPareta

18-Mar-08 3:24

Thanks It is very useful. Smile | :)

Pavan Pareta

memory leak... AGAIN

Harvey Saayman17-Mar-08 21:04

Harvey Saayman

17-Mar-08 21:04

hey guys

ive got a memory leak in a server app im working on...
in a nutshell its a chat server, clients log on and the server relays a message send by one client to all the other clients

when i close it the form goes away but the process is still running

is there any way for me to find out which objects or classes are still running in the background?

how do you guys figure out where a leak lies?

im using visual studio 2008

thanx

Harvey Saayman - South Africa
Junior Developer
.Net, C#, SQL
think BIG and kick ASS

you.suck = (you.passion != Programming)

Re: memory leak... AGAIN

stancrm17-Mar-08 21:15

stancrm

17-Mar-08 21:15

Probably some threads are running. If you create a new thread, set property myThread.IsBackground=true.
That means, if you close your process, all threads will be closed also.

Re: memory leak... AGAIN

Pete O'Hanlon17-Mar-08 23:15

Pete O'Hanlon

17-Mar-08 23:15

You want to use Clr Profiler. These[^] links should help.

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