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You're not going to get much space to make this useful. At least, not without corrupting a Word document. Besides, it's got a limited lifespan. Office 2007 and above now uses an open format XML file to store documents. There's no longer any place to "hide" data.
You may want to consider using alternate streams, but there's a catch. If you copy the file to a non-NTFS formatted device, the data in the alternate streams will be lost.
You're not getting any useful answers because the knowledge base out there is so limited. Noone, besides Microsoft anyway, delves into the old Word file formats for any reasons. It's very unlikely your ever going to find anyone with any experience with it.
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Dave Kreskowiak wrote: Office 2007 and above now uses an open format XML file to store documents. There's no longer any place to "hide" data.
Don't bet on it. A friend of mine completed his final year project on information hiding and he demonstrated the ability to hide a message by using the IP header to deliver the payload. That's an open standard too. It was a fascinating project.
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How big is the payload? Last I heard, you couldn't fit anything much bigger than an SMS message in it.
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Dave Kreskowiak wrote: How big is the payload?
256 bytes.
Dave Kreskowiak wrote: Last I heard, you couldn't fit anything much bigger than an SMS message in it.
The IP header (not TCP/IP) is only 20 bytes. It worked by virtue of the fact that a packet is about 1.5k and to download an average web page required that quite a few packets are sent. Each packet had a different part of the message. Once you had 256 packets you have the full message (at best). The algorithm used was quite clever becuase it took account of the fact that other things may be interacting with the server, so if you missed part of the message it would send it again.
The software on the client was just a .NET application using sockets in promiscuous mode. Each packet was then examined and the message was gradually pieced together. To get the data you just browsed the innocuous website on the server in your favourite browser.
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Makes perfect sense. Obviously not to the subject of Word Documents but anyway, thanks Colin 
led mike
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I'm sure I've answered you before but I can't be bothered to look. You're persistant at least - I'll give you that.
A quick bit of Googling revealed this page[^] that gives you code in C to write and read.
You may need to build this yourself to a dll in C++ and then provide a c# wrapper to it.
DaveBTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
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Miss_hacker wrote: why this code didn't execute??? what are my errors
Did it tell you anything? Or do you just expect people to read your mind?
"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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If I want a button to be repainted permanently at the click of the same button, how can I do?
So far I have tried to send the button as sender after it has been clicked to the button's paint event. This only works to some extent, the repainting comes on but as soon as the mouse cursor leaves the button, the repainting wears off.
I am looking for a way to make the repainting stay on permanently.
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This may seem like a silly answer (I never use the painting stuff and I'm really having trouble saying this without sounding like a prat), what's wrong with the background/foreground settings. Why are you trying to "repaint" it.
Never underestimate the power of human stupidity
RAH
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Not a silly question at all. I am trying to repaint it because the next course in school will have exercises where repainting in this manner is necessary. I am just trying to get prepared.
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You really can't do this because your going to tie up the UI thread with constant WM_PAINT messages. You won't be able to do anything else in the application.
Perhaps a better explanation of what the point of repainting a button would help? And don't say "because that's what were doing in class"...
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Sounds like you need to set a flag that you can test to see if your painting should be used everytime the control is Invalidated and test that flag in the overridden OnPaint.
This site[^] has some cool user button codes that you may find useful.
DaveBTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
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Hi!
I need the coding for inserting image in header/footer of a word document using c#, Windows Application.
Thank you...
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No.2[^]
While (true) { Human.isLearnable = true; }
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Morning fellow code writers...
I have a try and catch process that is giving me fits...If I eliminate the throw new Exception(ex.Message); line I get an error: Error 3 Use of unassigned local variable 'tbl'.
Can somebody enlighten me as to why this is happening??
catch (Exception ex)
{
MessageBox.Show("The following error occurred :" + ex.Message, Application.ProductName,
MessageBoxButtons.OK, MessageBoxIcon.Information);
string logFile;
string logPath = Application.StartupPath + "\\logs\\";
logFile = (logPath + global.logDate + ".log");
StreamWriter writer = new StreamWriter(logFile, true, System.Text.Encoding.ASCII);
writer.WriteLine(System.DateTime.Now);
writer.WriteLine("[Process #]");
writer.WriteLine("[get data]");
writer.WriteLine(ex.Message);
writer.WriteLine("\r");
writer.Close();
throw new Exception(ex.Message);
}//end of catch
return tbl;
}
}//end of class name
}//end of namespace
TIA
Rafone
Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
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Rafone wrote: return tbl;
What is this "tbl"?
While (true) { Human.isLearnable = true; }
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I guess you always throw an exception in the try block as well. If that's the case, the return statement would never execute and the compiler ignored the fact that you used tbl without assigning a value to it. If you remove the throw statement (either in the catch or in the try block), that line of code would execute and therefore the compiler complains.
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I guess you are assigning value to tbl in try block don't you? If an exception occurs then tbl variable can be unassigned so if you remove throw new Exception(ex.Message); from your catch block then the function must return tbl but it will be unassigned hence the error. On the other hand, throwing new exception means that there is no need to return tbl.
By the way, why don't you use log4net[^] for logging purposes?
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THX for the tips..
Giorgi Dalakishvili wrote: By the way, why don't you use log4net[^] for logging purposes?
Ignorance....I did not know it existed. I will look into that.
thanks again
Rafone
Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
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I found NLog[^] more accessible, although it appears not to have been updated for a while. NLog is derived from log4net. The forum is active though and 2.0 is in the works.
Kevin
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Rafone wrote: Morning
It is early evening where I am.
Rafone wrote: If I eliminate the throw new Exception(ex.Message); line I get an error
Without seeing the rest of your code I'm guessing here.
You have, I guess, declared tbl outside of the try/catch block. Something is assigned to it inside the try block.
When you throw the exception in the catch the compiler knows that return tbl will always have something assigned to it, because in all other instances you are exiting the method before it can return it.
Also, your code contains a bit of a WTF. At the end of your catch you have throw new Exception(ex.Message) - By doing that you are discarding all the information in the current exception (there is a lot more in there besides the message you know). You should retain that information so that you can debug things properly in the future. You have two strategies:
1. throw new Exception(ex.Message, ex);
or
2. throw;
In this situation option #2 is preferable because you are adding no value in #1.
Finally, don't catch Exception, use a specific exception type. Don't throw an Exception either, again, use a specific exception type. If a specific type does not exist then create one.
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Thanks for the explanation it has helped alot.
Colin Angus Mackay wrote: You should retain that information so that you can debug things properly in the future. You have two strategies:
1. throw new Exception(ex.Message, ex);
or
2. throw;
I have implemented option #2 here
Thanks for the advice...
Rafone
Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
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Rafone wrote: Error 3 Use of unassigned local variable 'tbl'.
That's pretty self explanatory. What is the code that is in the try block? You are attempting to return something for tbl when it has not been assigned anything. Not an error but rather a warning.
"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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Hey guys.
In the try block I am populating a datset and a table(tbl) and doing some other processing then saving the data to disk. All of the code works in the try block.
I set up an exception in the file name that I am saving to to get some error logging going.
the catch is almost a verbatum translation from some older vb code that works fine.
Rafone
Statistics are like bikini's...
What they reveal is astonishing ...
But what they hide is vital ...
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