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Javier Aballay wrote: but I want show them in web service.
Web Services, like all services, don't have any user interface, thus they show nothing. Perhaps you need to reword your question?
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Hi everybody.
I'm going to work on Face Recognition with C#, I'm green on it.
So , do you know any references for algorithms or samples about it ?
I've searched Google , but I've not found anything special.
Could you post some samples about it ?
Many thanks in advance.
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Mohammad Dayyan wrote: I'm going to work on Face Recognition with C#, I'm green on it.
Then you probably aren't aware of how increadibly difficult a problem domain this is. People have worked for years trying to get face regognition to the point is is today... And it still isn't anywhere near perfect.
Mohammad Dayyan wrote: Could you post some samples about it ?
This is an area of computer science that is still mostly in the academic sphere. You might want to try searching university libraries and academic publications.
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Colin Angus Mackay wrote: Then you probably aren't aware of how increadibly difficult a problem domain this is.
Yeah, you're right. But we should start to aware of them.
Hope springs eternally
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Hi,
I was working on that one (in c# actually) for about 6 months. As Colin has pointed out - this is a difficult problem. Many methods have been developed, none works even close to what I would call acceptable  .
Anyway, you have 2 problems:
- Face detection - There is an OpenCV library which works nice with their haar detectors and there is a lightweight library somewhere on net that tracks faces (if you have a video stream) using ANN, combining those two can give you nice results of tracking faces on video. (At least that worked grat for me).
- Face recognition - Here, I would start with articles from universities, but don't expect too much (complete how-to? - no way, method that works almost always? - no way). Good place to start would be IEEE or good old friend Google  .
ANN, LBP, Eigenface, Fisherface - good keywords to start searching.
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Hello.
I have this:
this.webBrowser1.Document.Window.Frames[2].Document.Body;
Which gives me the HTML source of the main body of the frame.
But I need the source of the whole site, including HEAD and all the other tags.
Hope your guys can help
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Excluding the server-side scripting, off course. Take a look here[^]
I are troll
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Off couse.. I could have said that myself..
Thanks alot!
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Hello,
.. I had signed a dll (a .NET Control for Windows Form) using a snk file that was created in my old computer where I had XP. But in my new machine, with VISTA, I cannot build the dll with the old snk file. I get error “The key file ***.snk does not contain private/public key pair”. Ok then I tried to create a new key using the Visual Studio 2008 Signing Section, I choosed to create a new key file, but I get error “The operation could not be completed”. Please help.
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HI
Hi,
I have requirement where when I click a button a rectangle should be displayed. One more click on the button 1 more rectangle shoud be drawn, without over writing my previous rectangle. In the code which I have the rectangle is getting overwritten which i dont want.
Thanks i advance
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You just need to take care of coordinates. Keep track of coordinates and make sure you draw next rectangle in empty space.
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two options for you to consider.
1. Keep a 'Global' Graphics class that you do all your drawing to. then in your paint event (assuming your doing that way with a panel?) just draw the graphics class.
2. Keep a Collection of rectangles, in which you add a new one to it each time the button is clicked(with desired location, size, colour etc.) then in you paint event just draw each rectangle in the collection
Option 2 is a much better solution because you can manipulate rectangles individually if future developments require
Life goes very fast. Tomorrow, today is already yesterday.
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What about using STACK structure to store the rect you need to draw? So the latest one will alway be displayed firtly.
I Love KongFu~
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I want to use TcpClient and connect with a proxy like HttpWebRequest.
Can I add a proxy to the TcpClient-object?
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Hi,
I'd like to save a combination of username and password in a XML file, so the user won't be bothered to type his username and password every time he runs the program.
So far I have followed this article http://www.codeproject.com/KB/security/ProtectYourXmlData.aspx and written some piece of code, which encrypts and writes the username and password to a XML file. It also decrypts them after reading from the file.
Big disadvantage of my code is, that the password is hard-coded into my application 
Is there a best practice where the "master-password" should be put? Perhaps into the application.config or the user.config?
Greetz,
Francis
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francis-09 wrote: Is there a best practice where the "master-password" should be put?
How about database?
Yusuf
Oh didn't you notice, analogous to square roots, they recently introduced rectangular, circular, and diamond roots to determine the size of the corresponding shapes when given the area. Luc Pattyn[^]
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Instead of saving the password, calculate a hash-value based on the password. Once the user enters his/her password, calculate a new hash. Compare this calculated value against the hash-value that you have stored (and encrypted).
You might want to adapt the example from MSDN[^] for your purpose
I are troll
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Sorry, i did not explain the purpose, I'm up to very well.
My application will not require user-authentication "with itself", but will be used at an intermediate piece to another software.
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when you say 'master-password' do you mean a key that is used for encryption/decryption? or do you mean a password for an admin account incase all other username/password combinations are forgotten?
also, does you application work on a network? i.e. with a central database. Or is it just for local machine usage?
Life goes very fast. Tomorrow, today is already yesterday.
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I mean a key that is used internally for encryption/decryption. In the end it should be a similiar functionality as the firefox or opera password wizard. Sorry, I perhaps explained that abigously.
The application will also be just for local machine usage.
Thanks, so far
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Hmmmm, well the key needs to be stored locally then.
So i think hardcoding is just as safe as any other option. if you hardcode then the key can posibly be recovered from the executable. but if you store in any other file then you have the same issue. you could store in an external file that you encrypt with a hardcoded key ( just a little extra effort to hack). maybe use some sort of obfuscator[^] on your application.
Alternatively maybe you could consider using a different key for each logged in user. maybe stored in a file in thier user folders, or perhaps a 'hash' of thier user Guid. I would personally give this approach a try.
But these are just suggestions, and i cant say for sure if they are best options
Life goes very fast. Tomorrow, today is already yesterday.
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Best practice on saving passwords = don't.
Any techniques that rely on storing a password to a password to a password are inherently unsafe.
Hasing the password (as already suggested) would be OK as long as the hashing algorithm used is safe (try SHA 256)
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I searched through the net to find the best solution to do this, but about 90% answer are the same. "DON'T SAVE, USE HASING".
Please, stop to give a solution to use salt or hashing.
because i think the scenario is different.
and I think someone asked about it is already known well about hashing.
Let me explain about my own problem:
1. How do you use hashing if your application should logged in to several services that need a plain password?
2. How do you use hashing for "Save my password" check box below the login form? yes better don't put it.. but how do i satisfy my user about this?
Sorry, Don't meant to be offense.
But it is a bit anoying to face the same answer if you in rush 
Best Regards
Tutnik
Kin
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Well, ok, the post was a bit old but why not..
1) Sure, if you need the plaintext password then you need it, that's the other services' fault then for requiring you to use potentially unsafe techniques..
2) That kind of information really should be stored client-side.. otherwise there basically isn't any password protection at all right? And if the client side is getting hacked, there is nothing you can do anyway, it's fundamentally impossible to know the difference between a user and a malicious program that is inadvertently ran by the user
It is true that the usual answer of "DONT SAVE IT" is getting old/annoying, but some people just don't know about security - maybe the same people who keep trying to hide/encrypt things from the user himself.. (sometimes they even want to encrypt the code - as if that's going to do anything)
edit: I don't really think that this was a case where the OP would need to store the plaintext password - the user would be entering it anyway so if the hashes match you have your plaintext
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