cannot pass a string through an object to an unmanaged VC++ dll - C# Discussion Boards

24-Feb-05 4:18

This message goes out to all the regular expression gurus out there:

I have a very simple regular expression declaration:

regex.Regex ex = new System.Text.RegularExpressions.Regex("\\(");

I want to know how to test against this regular expression so that if the tested string does not match EXACTLY then its going to give me false. For example:-

string test = "a(";
regex.Regex ex = new System.Text.RegularExpressions.Regex("\\(");
System.Console.WriteLine(ex.IsMatch(test, 0));

should return false (which it does not). How do I do this?

Secondly, I want to recursively define a definition but I do non know exactly how. I have an expression and it COULD be enclosed in brackets. So lets say I have the following:

E -> (E)

I could alse have:

E -> C-E
C -> constant

How do I write a definition like this? I'm very much not keen on writing a parser, I assure you!

Thanks a lot!
Jim

Michael Dunn24-Feb-05 6:09

Michael Dunn

24-Feb-05 6:09

I'm not familiar with the .net regex syntax, just the Perl syntax, but in Perl you can write ^\($ where ^ means "beginning of the string" and $ means "end of the string". Hopefully there are equivalents in .net that you can use.

--Mike--
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Esmo200024-Feb-05 7:21

24-Feb-05 7:21

Thanks, does anyone know how to step around the recursion problem?

Cheers,
Jim

S. Senthil Kumar24-Feb-05 8:43

S. Senthil Kumar

24-Feb-05 8:43

AFAIK, there is no way you can implement reductions like the ones you posted using regular expressions. That's the job of parsers.

Regards
Senthil
My Blog

Esmo200024-Feb-05 9:25

Sending Emails - The "SendUsing" configuration value is invalid.

24-Feb-05 9:25

They said that these regular expressions were built on NFAs... Such a regular expression would be possible with an NFA, no?

Is there a built in parser anywhere?

Jim

MrEyes24-Feb-05 2:51

MrEyes

24-Feb-05 2:51

Hello all,

I have an application that attempts to send emails via an exchange server on another machine. The code I am using is as follows :

MailMessage aMessage = new MailMessage();				
aMessage.From = "johndoe@server.com";
aMessage.To = "janedoe@server.com";
aMessage.Subject = "Test Subject";
aMessage.Body = "Test Body";

System.Threading.Thread.Sleep(3000); //REQUIRED OR MAIL ATTACHMENT MAY FAIL
MailAttachment mat = new MailAttachment("c:\path\to\attachment\att.jpg")
aMessage.Attachments.Add(mat);
SmtpMail.SmtpServer.Insert(0, "SERVER IP ADDRESS");
SmtpMail.Send(aMessage);

60% of the time this code works, but on occasions I get the following exception thrown by the .Send

System.Runtime.InteropServices.COMException (0x80040220): The "SendUsing" configuration value is invalid.

After hunting around google for a while I am none the wiser as to a solution to this problem. Although I have made some code tweaks to match certain suggestions

Does anybody have any suggestions

post.mode = postmodes.signature;
SELECT everything FROM everywhere WHERE something = something_else;
> 1 Row Returned
> 42

Re: Sending Emails - The "SendUsing" configuration value is invalid.

turbochimp24-Feb-05 12:06

cannot pass a string through an object to an unmanaged VC++ dll

24-Feb-05 12:06

There is an MS knowledgebase article regarding this exception here.[^]

Does that help at all?

The most exciting phrase to hear in science, the one that heralds the most discoveries, is not 'Eureka!' ('I found it!') but 'That's funny...’

grs_files24-Feb-05 2:29

grs_files

24-Feb-05 2:29

Hi,
I am passing an object of a class declared in my C# code to an unmanaged VC++ dll.
If my class contains an int/double/char and may be some functions then I can get their values in the dll. Also I can modify the values there and the modified values I can get in my C# code. So it works fine.
But if I include a string in my class then I can get the values of other variables except the string. And if I modify ANY value in the dll then it does not get reflected in my C# code.
I am unable to proceed. plz help me...

GRS

Need Help - Game Menu programming.

giggssux9224-Feb-05 1:48

giggssux92

24-Feb-05 1:48

Hi guys, I have a question... I have managed to program a simple game, but I need help in creating a starting menu. For example, the options would be, "start", "high score" "help" "exit".

I hope anyone with game programming can help me out soon. Thanks in advance!!!

James Kleinenberg

Re: Need Help - Game Menu programming.

exhaulted24-Feb-05 2:32

exhaulted

24-Feb-05 2:32

some more details would be nice.
How have you made the game, using GDI+, directX openGL?

If you've used GDI+ just use windwos forms buttons for your options.
Otherwise give a bit more info.

Cheers

Kev

Information about a streamed file embedded in a WebPage (WindowsMediaPlayer ActiveX)

rwelte24-Feb-05 0:30

rwelte

24-Feb-05 0:30

Hi,

is it possible (and how? Wink | ;-)

) to write an application, where I can get some informations like "artist" or "title" from a streamed file, which was played by a WindowsMediaPlayer ActiveX, which is embedded in the loaded webpage?

Thanks in advance, Randy Smile | :)

Sorting DataGrid

Maqsood Ahmed24-Feb-05 0:21

Maqsood Ahmed

24-Feb-05 0:21

Hello,
How can I sort a DataGridColumn which has Alphanumeric values such that
"Record No: x". Is there any property which I can use for this purpose.

Scenario:
I have 4 values in column R1, R9, R20,R10 and when I try to sort this
column in the DataGrid (by clicking the header) it displays R1, R10,
R20, R9. While I want to display R1, R9, R10, R20.

Is is possible. Thanks in advance

Maqsood Ahmed
Kolachi Advanced Technologies
http://www.kolachi.net

turbochimp24-Feb-05 12:07

24-Feb-05 12:07

Would it be possible to pad the numeric portions with zeros? That should yield a more "accurate" sort.

The most exciting phrase to hear in science, the one that heralds the most discoveries, is not 'Eureka!' ('I found it!') but 'That's funny...’

Maqsood Ahmed24-Feb-05 20:20

Maqsood Ahmed

24-Feb-05 20:20

turbochimp wrote:
Would it be possible to pad the numeric portions with zeros?

Hello,
No! the given scenario was just to make the problem clearer. I have sort more complex values in the realtime application, something like "Buy Price 1.2034", "Sell Price 2.382", "Market Price" etc. It means that some values can be alphanumeric but others will be just strings.
Can anyone suggest a generic solution to this problem.
Bye Smile | :)

Maqsood Ahmed [MCP,C#]
Kolachi Advanced Technologies
http://www.kolachi.net

turbochimp25-Feb-05 3:02

25-Feb-05 3:02

It sounds like you need normalization, not a different sort routine. In the example you offer, there should be 3 columns - BuyPrice (decimal), SellPrice (decimal) and MarketPrice (decimal).

If you're using a single column to hold three different pieces of data, you should think about changing the way the data is stored and/or displayed.

The most exciting phrase to hear in science, the one that heralds the most discoveries, is not 'Eureka!' ('I found it!') but 'That's funny...’

Maqsood Ahmed26-Feb-05 3:54

Maqsood Ahmed

26-Feb-05 3:54

Hello,
It is not the case of storing data in right way or something, it is just for the user friendliness, the way user wants to see it.
By the way, there should be only two columns, Price and Type Smile | :)

. Any luck with the actual problem :s
Cheers.

Maqsood Ahmed [MCP,C#]
Kolachi Advanced Technologies
http://www.kolachi.net

turbochimp2-Mar-05 2:34

Re: Custom toolbar in Excel

2-Mar-05 2:34

You can always display normalized data in a non-normalized way using SQL functions, string concatenation or by simple control placement. How you display data to the user should not dictate your data model. They seldom coincide.
In the example you provided, you would need three columns to hold price information unless you decided to either duplicate all row data for each price type, or move prices to a separate table. One price column in the same table would not cut it.
As far as "the actual problem", there isn't one. You're trying to use standard sort routines to sort data in a non-standard way; what's more, your data appears to be stored in a fashion that is not conducive to ever having meaningful reporting or display filtering options.
If you are completely devoted to storing your data in the manner you suggest, then I would advise investing some time learning how to implement the IComparable interface, and create your own collection class that's sortable. Please note that this option is less than optimal, to put it mildly.

The most exciting phrase to hear in science, the one that heralds the most discoveries, is not 'Eureka!' ('I found it!') but 'That's funny...’

Shortcut targets

exhaulted23-Feb-05 23:40

exhaulted

23-Feb-05 23:40

Hi all, i'm using System.IO.File to copy a shortcut to my application into the startup directory but on Windows 2000 machines the "Target" part of the shortcut is being renamed to my1~.exe instead of myshortcut.exe. This causes the applications process name to be changed to my1~.exe instead of myshortcut.exe which causes me problems in other applications. Anyone able to tell me how to either, change the target name back to what it should be after the file has been copied or prevent the name from being changed in the first place.

Cheers

Kev

Custom toolbar in Excel

sharathgowda23-Feb-05 22:07

sharathgowda

23-Feb-05 22:07

Can any one let how to create toolbar in excel. I want to add new buttons to the toolbar and provide my own implementation when the user clicks the button

"The world's biggest power is the youth and beauty of a woman."

Esmo200024-Feb-05 4:09