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Hi,
C# VS2005
Im using web services to return custom objects. I want the database connection from the gui to remain persistent.
(The gui creates a connection and the idea is that the web service always uses this connection)
If I pass the connection object (Type System.Data.OleDb.OleDbConnection) to the web service as a parameter I get the error:
Cannot serialize member System.ComponentModel.Component.Site of type System.ComponentModel.ISite because it is an interface
Is it possible to pass database connections to web services or how can I ensure the web service uses a persistent connection??
Thanks,
Chas
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You should never try to make a connection persistent with web services. You're totally defeating the benefits that you get with a disconnected architecture. Please - think this through, and then change your architecture to fit the n-tier model, so you acquire your connection as late as possible and release it as early as possible afterwards.
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Instead of trying to pass a connection to the web service, how about just declaring a new connection in the web service class iteself. Lets say, in its constructor would be a good practice.
Try it before its too late coz it works inline with time.
Morg..... 
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Hi everybody,
it's probably a stupid question but i hope someone can help me  .
I have the following situation:
A TAPIClass which gets an eventhandler (which himself gets events from the phone)
I created a class CPhone which should store the instance of the TAPIClass.
In the constructor i create the TAPIClass instance and initialize it.
The CPhone instances are created into a thread which is created this way:
new Thread(new ParameterizedThreadStart(TelSignalThread));
where TelSignalThread is a static function of the Main-Form which creates
an instance of the CPhone class
public static void TelSignalThread(object param)
{
MainForm Win = (MainForm)param;
CPhone tel = new CPhone(Win);
while(Win->Running)
{
Threading.Sleep(10);
}
}
My question is, how is it possible to call a function from CPhone from out the MainForm?
Call the GUI from out the Thread works with Invoke.
Edit: Or is it the best way to derive my CPhone-Class from the class Thread and to add class-members<br />
to the CPhone class? Does exists a PhoneThreadInst->Invoke(...); ?
Before i created this thread and the CPhone-Class, i had the TAPIClass into the MainForm, without a special thread and it worked great.
Then i needed to open a new window from a button-click during a phone call.
This provokes sometimes a event-lost from the TAPIClass , and a missing "hang-up Event" disturbes my whole appliction 
Big thanks for any help 
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If you just want to call a function in CPhone form outside the class,
you can expose the fucntion by making it static.
Why do you want to use a thread to create the TAPICalss??
Did you try to use the BackgroundWorker threads ??
Missing of the event is very uncertain , dont know why it occures .
Vikas Amin
My First Article on CP" Virtual Serial Port "[^]
modified on Thursday, July 24, 2008 5:33 PM
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Thanks for your answer,
i create it in the thread for the reason that the instance is executed in another thread than the
GUI-Thread.
Probably there is a timeout or a "black hole" where the Hang-Up-Signal disappears if i open a new Window.
Actually it works with the Telefony-API into the thread.
But it worked also without a thread, but sometimes it makes problems
Now i need to test if this error occurs also with threading ...
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On disk sometimes I have filenames that show up like ûÓÐÈË¿ÉÒÔ½ÐÄ㱦±´. However it should really be this: 没有人可以叫你宝贝. (Others are displayed correctly, so it is not a problem of the system).
I can copy the garbaged filename to a text file, open it in a browser, change the codepage to gb2312 for display in the browser, copy the displayed Chinese characters and rename the file. (I currently do not see through what the browser does)
This is not applicable for more than a few files.
So I want to automate it.
(I have a european Windows XP environment, should be the same with English)
Is there any tool, that does it? Or how can I do what the browser can do by C# coding? (the encoding part is sufficient).
Tried the encoding class but did not get any usable result. Please help. Thanks.
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That's interesting. I'm not sure what the problem is though. Just created a file named 没有人可以叫你宝贝.txt on a German XP (hope it doesn't mean anything nasty), and in Explorer it shows up as a sequence of squares. This looks like a system thing indeed, cause the file name is correct (as I can see when I drag it into Firefox, which shows 没有人可以叫你宝贝.txt in the address bar).
Is this the phenomenon you mean, or do your files also have a different name? And if so, can you reproduce it?
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Did you install your Windows' option "support for East Asian languages"? If so the filename should display as I have posted before.
If you are using Tools instead of the Windows Explorer, it might be that they are not able to display double byte characters and will display symbols instead. Total Commander should work with it but some of its functions do not.
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No, I have no support for Asiian languages installed.
Anyway, if it's actually about encoding, did you try something like this:
string source = "ûÓÐÈË¿ÉÒÔ½ÐÄ㱦±´";
Encoding sourceEncoding = Encoding.Default;
byte[] bytes = sourceEncoding.GetBytes(source);
Encoding targetEncoding = Encoding.GetEncoding("gb2312");
string target = targetEncoding.GetString(bytes);
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Thanks a lot!
That seems to work. My problem was, that I did not find Encoding.Default. Had tried all others, but .Default is obviously the remedy.
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I need to print 1 record per page (invoice type) in crystal report? i have set the report to A5 for a custom width and length.
Got a Parent/child relation as my data source.
formatted the report this way:
Customer Name Date
transaction 1
transaction 2
transaction 3
...
Note: i have tick the [New Page After] in detail section, but to no avail its not doing what i think it should be doing.
been googling this since this morning but have not found any descent solution in doing this.
any help or a site is highly appreciated.
Life - Dreams = Job
TheCardinal
CTC-RDG
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Try surrounding the detail section with a group section. Define grouping field based on in which case you want to have a new age and set NewPageAfter to true for the group footer
Hope this helps,
Mika
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I may try that thanks Mika
Life - Dreams = Job
TheCardinal
CTC-RDG
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Hi ,
I have created custom print dialog and included preview button in it.
I have used PrintPreviewDialog class to show the print preivew box and used my onPrintPage() evnt to process each page n print.
Problem is when i click on print settings button in print dialog and then if i go for Preview button , preview is done within a minute. But if i click the preview button without making any changes to page settings , it take nearly 5 mins to show a preview of 10 pages.
Please help to resolve the problem. I cudnt find how come print preview generates the page faster if i open and close the pagesettings dialog???
Thanks in advance..
Please reply as soon as possible!!!!!!!!!!!
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i need to poll for a new hardware (Non Plug and Play device<</i>/b>) connected to the serial port, can anyone give me the sample code or any links..
please reply asap.. )
thanks and regards
skvs
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Open the port and see if it responds... 
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okay, thank you..
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i want to make a font in gdi+ .
which i can defiend the font's height and width .
in the .net ,it is imposiable to set a value to the font's height or width.
please help me !
from vevi
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is anyone can help me?
from vevi
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Dude, you need to have patience. If someone can help you, they will.
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
"Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham
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He became impatient after only 20 minutes too..
Regards,
--Perspx
Don't trust a computer you can't throw out a window
-- Steve Wozniak
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Perspx wrote: became impatient after only 20 minutes
More the reason to delay replying with real helpful stuff, too 
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
"Not only do you continue to babble nonsense, you can't even correctly remember the nonsense you babbled just minutes ago." - Rob Graham
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you can create cutome font using System.Graphics
I think there is a font and fontfamily class. Try to Googling you will get your answer.
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please think about a little with the question .
if i use google can find the answer,i would not be ask it in here .
if you did't know please dont reply!!
from vevi
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