Re: internet cafe software - help needed - C# Discussion Boards

4-Aug-07 3:31

i have seen the tags became popular now in many sites and blogs, last i have seen it in the qna.live.com and i want to know to deal with it? is it just a text file or database entry..

can anyone explain tags please..

Re: tags - how to?

Colin Angus Mackay4-Aug-07 12:51

4-Aug-07 12:51

jrahma wrote:
i want to know to deal with it?

In what respect do you wish to "deal with it"? The way you've worded that, you make it sounds like you want some one to take it out back and shoot it.

jrahma wrote:
is it just a text file or database entry..

I would imagine it would be database entries (plural)

jrahma wrote:
can anyone explain tags please..

It is just a simplified way of saying categories, but more fuzzy warm and fluffy.

Upcoming events:
* Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ...

"I wouldn't say boo to a goose. I'm not a coward, I just realise that it would be largely pointless."

My website

Re: tags - how to?

Jassim Rahma5-Aug-07 5:41

5-Aug-07 5:41

any where i can find full details (including technical) about tags?

Re: tags - how to?

Colin Angus Mackay5-Aug-07 5:50

internet cafe software - help needed

5-Aug-07 5:50

Tags are a fuzzy concept. I don't see what technical information you'd be looking for becuase they are, at their simplest, a many-to-many join between two (or more tables)

Take Flickr for example. Tags are associated with photographs.

One tag is associated with many photos
One photo is associated with many tags.

The three tables are:

Tag
---
TagID
Text

Photo
-----
PhotoID
PhotoBinary

PhotoTag
--------
TagID
PhotoID

That is the basis of a many-to-many join. The subject of a Databases 101 course.

There isn't much more to it than that.

Jassim Rahma4-Aug-07 3:21

Re: internet cafe software - help needed

4-Aug-07 3:21

hi,

I have the following question about an internet cafe software?

How can I coctrol the cafa PCs (lock and unlock)?
Is there any way to create a system restore point so whenever client installed any programs of files i can go back to my first image?
how to protect both above point from normal user from stoppong or closing it?

The ANZAC4-Aug-07 13:02

The ANZAC

4-Aug-07 13:02

1. You need to totally block out all hot keys such as 'alt + tab', 'ctrl + alt + tab' etc. Google can help.
2. Restore points only remove installed programs, not files, these are designed to remove problems caused by faulty drivers etc. If you don't want users to install programs, run it on a limited account so they can't without admin permission.
3. You may be able to monitor the whole hard drive with a filewatcher, i've never looked into it, but it might track changes.

Please check out my articles:
The ANZAC's articles

Re: internet cafe software - help needed

Jassim Rahma5-Aug-07 5:56

How can I access an html element in frame.

5-Aug-07 5:56

but i have seen in dubai and bangkok in some intenet cafes that thought they can control the PC but i am can still use all the mentioned keyboard keys.

Also i found in some cafes that when the customer finishes and they lock the PC and when the next customer comes the PC will be just like it was the first time the installed it on the cafe.

VahagnSC4-Aug-07 0:37

VahagnSC

4-Aug-07 0:37

Hello everybody!!!!
I have a page which have the following form:
...

...
I want to access an element from "mainframe" using an object of System.Windows.Forms.WebBrowser class.
In contrast to JavaScript the property Webbrowser1.document doesn't have collection "frames".

Please anybody answer me!!!!

Re: How can I access an html element in frame.

George L. Jackson4-Aug-07 6:20

George L. Jackson

4-Aug-07 6:20

You need to post this question in the Web Development Forum.

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Windows form global object

Krugger4044-Aug-07 0:22

Krugger404

4-Aug-07 0:22

Hi,

I am currently building a window application and i want the system to use a single database connection for all its queries. So, i want to created a global connection object on login and use this very same object throughout my application when a database connection is required. Can you please help me on this?

Ps. The connection object instantiated on login should be visible throughtout the entire application.

Re: Windows form global object [modified]

Colin Angus Mackay4-Aug-07 0:31

4-Aug-07 0:31

datastruct wrote:
I am currently building a window application and i want the system to use a single database connection for all its queries. So, i want to created a global connection object on login and use this very same object throughout my application when a database connection is required. Can you please help me on this?

What you actually want to do is create a DAL (Data Access/Abstraction Layer) class (or classes).

The DAL is either going to be a singleton or a static class.

Here is a very basic example:

public static Dal
{
    private static SqlConnection theConnection;
 
    public static ConnectionString
    {
        set
        {
            theConnection = new SqlConnection(value)
        }
    }
 
    public static DataSet SomeQuery(int id)
    {
        // Write the code to perform the query here.
    }
}

-- modified at 6:50 Saturday 4th August, 2007
(Corrected code)

Christian Graus4-Aug-07 0:47

Christian Graus

4-Aug-07 0:47

You forgot to make somequery static :p

Christian Graus - Microsoft MVP - C++

"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Colin Angus Mackay4-Aug-07 0:50

4-Aug-07 0:50

Christian Graus wrote:
You forgot to make somequery static

Oops!

Krugger4044-Aug-07 0:58

Krugger404

4-Aug-07 0:58

Thanks pal.It did solve my issue.

Manoj Kumar Rai4-Aug-07 0:49

Manoj Kumar Rai

4-Aug-07 0:49

Create one Singleton class.
This should have a member of type "OdbcConnection"
The connection to the database should be stablished in the constroctor of this class.
This class should have a member function to return the object of type "OdbcConnection".

Manoj
Never Gives up

Colin Angus Mackay4-Aug-07 0:52

How to open and read a file as a unicode char

4-Aug-07 0:52

Manoj Kumar Rai wrote:
This class should have a member function to return the object of type "OdbcConnection".

Why an OdbcConnection?

Life as a Coder3-Aug-07 23:32

Life as a Coder

3-Aug-07 23:32

How to open a file as a unicode char?
I used this :

<part of my code>
FileStream fs = new FileStream(open.FileName, FileMode.Open,FileAccess.Read);
StreamReader sr = new StreamReader(fs, Encoding.Unicode);

while (sr.Peek() != -1)
{
System.Console.WriteLine(sr.Read());
}
<end of my code>

But somehow it missed some characters.

In a file contain:
FF D8 FF D8 FF D8 FF E0 00 10 4A 46 49 46 00 01

My code only manage to read:
FF E0 00 10 4A 46 49 46 00 01

Anybody have the answer? Thanks before.

Training makes perfect....

Luc Pattyn3-Aug-07 23:52

Luc Pattyn

3-Aug-07 23:52

Hi,

your file is not a text file, it looks very much like an image file using
JFIF format (a special version of JPEG). You can not open it as text; you could
open it as a binary file if that is what you really want.

Its main purpose is to let you load an image as in
Bitmap bm=Bitmap.FromFile("myFileName");

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Life as a Coder4-Aug-07 0:03

Life as a Coder

4-Aug-07 0:03

No... I want to open file whatever it is.
The main purpose is to open file like UltraEdit32 or somethine like that (hex editor).

So it can open every file and read it as a binary.
but somehow my program miss some hex like i said before.

thanks Smile | :)

Training makes perfect....

Re: How to open and read a file as a unicode char [modified]

Luc Pattyn4-Aug-07 0:17

Luc Pattyn

4-Aug-07 0:17

If you want to create an app that can read all file types, you must use
binary file operations, not text operations.
Text operations work for text files only, binary operations work for all
file types.

So you should use the BinaryReader class, you should not use anything that
is text oriented such as:
StreamReader.ReadLine()
File.ReadAllLines()
File.ReadAllText()
FileInfo.OpenText()
...
that is everything that has "Text" or "Line" in its name, or returns
a string or a char or a char[]. To read arbitrary data, you need a byte[].

If you decide the byte[] represents text after all, you can try and decode it using
the Text.Encoding class

MSDN holds an article "How to: Read and Write to a Newly Created Data File"
that should be of interest to you.

Smile | :)

Luc Pattyn

try { [Search CP Articles] [Search CP Forums] [Forum Guidelines] [My Articles] }
catch { [Google] }

Guffa4-Aug-07 0:51

Guffa

4-Aug-07 0:51

Life as a Coder wrote:
But somehow it missed some characters.

No, it didn't. A unicode file starts with a BOM (byte order mark). That is not text, but a code that represents how the file is encoded.

-- modified at 11:04 Saturday 4th August, 2007

However, the bytes at the beginning of the file doesn't match any of the existing byte order marks. I believe that Mark has the correct explanation, and that your file simply isn't a valid unicode file.

---
single minded; short sighted; long gone;