C# Discussion Boards - CodeProject

Re: how to create a application as "Organizer Work" for beginner

5-Oct-07 8:41

hanght wrote:
I'm beginner, with C#. I've learned basic language C# and Window forms.

I think you should start a little smaller first.

only two letters away from being an asset

hanght5-Oct-07 8:52

hanght

5-Oct-07 8:52

thanks for your idea! If you can, please give me a smaller project(I'll try it!)

I learned C,C++,VB(not API Programming)! I think I should learn more about system programming(as my project)(I've done a management application).
I hope will receive many your ideas...

Re: how to create a application as "Organizer Work" for beginner

Christian Graus5-Oct-07 13:26

Christian Graus

5-Oct-07 13:26

Replacing windows calculator ( just the basic view ) is a good first C# project.

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 )

Re: how to create a application as "Organizer Work" for beginner

Abhijit Jana6-Oct-07 1:27

Abhijit Jana

6-Oct-07 1:27

Hi, Before strat to doing a small project please try to learn ADO.NET concept (if u dont have) , coz, for any project you have to use database.... and the application you want to build will need database to maintain records....

Good luck !!!

Happy Programming
-----
Abhijit

texture loader problem

Xmen Real 5-Oct-07 6:45

5-Oct-07 6:45

hi there,
i m trying to set background image of picture box by texture that will be filled by textureloader
but i have a problem that when i m trying to load texture its giving error
that is "Error in application"

codes :

private Texture texture;
private Device gDevice;
...........................
...........................

texture = TextureLoader.FromFile(gDevice, @"C:\asasa.ddt", 256, 256, 0, Usage.Dynamic, Format.Dxt3, Pool.Default, Filter.None, Filter.None, 0);

any idea to solve the problem?

Becoming Programmer...

Not Active5-Oct-07 6:55

5-Oct-07 6:55

It might be helpful to include the error you are getting Roll eyes | :rolleyes:

only two letters away from being an asset

Xmen Real 5-Oct-07 6:58

5-Oct-07 6:58

"Direct3DXException was unhandled"

Becoming Programmer...

led mike5-Oct-07 7:15

led mike

5-Oct-07 7:15

xmen_xwk wrote:
"Direct3DXException was unhandled"

So you're doing Direct3D development but you don't know that you should be posting the contents of the exception in order to receive help. I think you are missing some fundamental aspects of software development while proceeding to a somewhat advanced topic.

Xmen Real 5-Oct-07 14:18

5-Oct-07 14:18

yeah buddy i wrote entire error, but i dunno what i m missing D'Oh! | :doh:

here is screenshot of error Unsure | :~

http://img62.imageshack.us/my.php?image=17666431tn6.png[^]

Becoming Programmer...

Not Active5-Oct-07 7:30

5-Oct-07 7:30

"yeah i told the error "Error in Application" Frown | :(

I rolled off my chair laughing so hard, I think I'll go home now.

only two letters away from being an asset

Xmen Real 5-Oct-07 14:21

5-Oct-07 14:21

hahaha, i just wrote what i m getting by VC# Roll eyes | :rolleyes:

Becoming Programmer...

Not Active5-Oct-07 15:03

5-Oct-07 15:03

Have you tried the view details link on the exception dialog? That should give you more details, including a stack trace that help to narrow your problem.

only two letters away from being an asset

Xmen Real 5-Oct-07 15:48

5-Oct-07 15:48

yeah but i cant understand it, take a look on screenshot
http://img222.imageshack.us/img222/102/asdop6.png[^]

Becoming Programmer...

Lambda Expressions

Fayu5-Oct-07 6:22

Fayu

5-Oct-07 6:22

Can i use Lambda Expressions in C# 2.0?

Re: Lambda Expressions

Judah Gabriel Himango5-Oct-07 6:42

Judah Gabriel Himango

5-Oct-07 6:42

No. C# 2 doesn't provide lambda expressions, C# 3 does however. You can use a more verbose form of a lambda, an anonymous method, in C# 2.

public void DoSomething()
{
    int someLocal = 7;
    MethodInvoker anonymousMethod = delegate
    {
         MessageBox.Show(someLocal.ToString());
    };

   // You can now pass anonymousMethod to another method, or invoke it when you're ready.
}

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Feast of Tabernacles (audio)
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Judah Himango

.NET Decompiler ?? !!

Dan Suthar5-Oct-07 6:12

Dan Suthar

5-Oct-07 6:12

Hi,
I have come across a big problem.I have developed my application in C# just a few days before and today when I when searching the internet I found some software like ".NET Decompiler" . I wondered that how is it possible ? D'Oh! | :doh:

Then when I downloaded it any opened my executable it it, With my wonder the whole exe was converted to a full formated source code !! WTF | :WTF:

I was just too much shocked seeing all this ! OMG | :OMG:

What's it ? Any problem in .NET Complier method or what ? How can an exe be converted to source code ? Confused | :confused:

Anyone PLEASE HELP... Sniff | :^)

Thanks,
Dan.

Not Active5-Oct-07 6:17

5-Oct-07 6:17

The application is using reflection, just like ILDasm does. This is not a new, or unknown issue. You can use an obfuscator http://www.preemptive.com/products/dotfuscator/index.html[^] to attempt to hide your source, but nothing is perfect.

only two letters away from being an asset

Russell Jones5-Oct-07 6:17

Russell Jones

5-Oct-07 6:17

That's how it is in the .Net world.

It gives advantages like the cool features available in reflection but unfortunately it exposes the inner workings of your code to the outside world. You could try using an obfuscater to make your source less readable.

Russ

Nathan Holt at EMOM5-Oct-07 6:18

Nathan Holt at EMOM

5-Oct-07 6:18

Dan`M wrote:
I have come across a big problem.I have developed my application in C# just a few days before and today when I when searching the internet I found some software like ".NET Decompiler" . I wondered that how is it possible ? Then when I downloaded it any opened my executable it it, With my wonder the whole exe was converted to a full formated source code !! I was just too much shocked seeing all this ! What's it ? Any problem in .NET Complier method or what ? How can an exe be converted to source code ? Anyone PLEASE HELP...

The .net compiler includes a lot of information in the executeables for debugging purposes. If you don't want your code to be easily read, you need a .net obfuscator. I think one is included with VS2005.

Nathan

Dan Suthar5-Oct-07 19:50

Dan Suthar

5-Oct-07 19:50

Hi,
Thanks all of you for reply. Roll eyes | :rolleyes:

So now I get the real idea about an obfuscator.
But still I can't understand that if any programme can easily decompile the code of .NET programme then what's the meaning of a compiler ? I have an another question that when I tried to open an .exe made in Visual Studio 6 or any other programme which is not made in .NET than the program can't decompile it ! WTF | :WTF:

So is that mean that VS6 or the other programming language is more secure than vs2005 ?? Confused | :confused:

Nathan Holt at EMOM wrote:
I think one is included with VS2005.

I can't get it . Where is it ? D'Oh! | :doh:

Please give some more details ...

Russell Jones wrote:
That's how it is in the .Net world.

It gives advantages like the cool features available in reflection but unfortunately it exposes the inner workings of your code to the outside world. You could try using an obfuscater to make your source less readable.

So how the time has come when we have to buy third party softwares just to PROTECT OUR COMPILED CODE ?? !! Cry | :((

Isn't there any other way ??

Thanks,
Dan

lmoelleb6-Oct-07 1:17

lmoelleb

6-Oct-07 1:17

Neither .NET or legacy VB are safe against decompiling - it's just more obvious in the case of .NET.

A compiler converts your program from human readable source code to something the computer can easily execute. This is done to help the computer execute your program more efficient - it is not something you do to hide your source code, so you should not be surprised the code is still accesible after compilation.

.NET (and Java for that matter) compiles to a "higher level" than the old VB and C++ compilers and it carries more metadata on the program (method names etc) that makes decompiling them easier than for example C++ and VB programs. Decompiling VB and C++ is still possible however (but obviously not with a program designed to decompile .NET code), so you should NEVER rely on your code not being decompiled as "security".

With regards to security in general, maybe you should for a split second consider that it's not all about the programmer. It's obviously more secure for the user to run a program that has proper metadata to allow the runtime to verify what is going on - Running a program that deliberately try to hide what it is doing can be called a lot of things, secure isn't one of them.

And experienced programmers know there is nothing exceptional clever in their code anyway, so why try to hide it? Smile | :)

Dan Suthar6-Oct-07 2:22

Dan Suthar

6-Oct-07 2:22

lmoelleb wrote:
And experienced programmers know there is nothing exceptional clever in their code anyway, so why try to hide it?

Ya.. that's true sprit of programming. Laugh | :laugh:

No matter if the app has secure coding .
Anyway , best wishes for programming from me. Smile | :)

Thanks,
Dan

lmoelleb6-Oct-07 3:18

lmoelleb

6-Oct-07 3:18

If you think secure coding has anything to do with people being able to see your code or not, then you known abselutely nothing about secure coding.

If you do not have basic knowledge on for example the functions of a compiler, you are still very far away from understanding the concepts of security. This is fair enough - we are all learning, but I recommed you try to avoid smart comments like this one until you optain some more knowledge.