C# Discussion Boards - CodeProject

Re: Doesn't show any effect by registering a visual Studio 2008 C# Express edition's dll by using Windows command Prompt?

svt gdwl5-Apr-09 2:53

svt gdwl

5-Apr-09 2:53

Thanks for reply...

Preventing another application from calling code of my application.

Sandeep Kalra5-Apr-09 1:53

Sandeep Kalra

5-Apr-09 1:53

Hi All

I am developing a windows based application using C# Language in which security is very important.
I have used restricted access modifiers such as private,sealed,protected internal etc etc.
And also denied permissions to my application at assembly level(in AssemblyInfo.cs)
such as for File input output

[assembly:FileIOPermission(SecurityAction.RequestRefuse,Unrestricted=false)]

and for everything which was not needed in my application for eg registry,IsolatedStorage etc etc.

I have also strong named my assembly.

I came to know from somebody on the internet that still my code is accessible to other application
and any application by using System.Reflection can execute the code of my application.
Is it true?

If yes What should I do to prevent it.?
And please tell other things also which I can do to increase security of my application.

Please guide.

Thanks

Regards
THE SK

Re: Preventing another application from calling code of my application.

#realJSOP5-Apr-09 2:59

#realJSOP

5-Apr-09 2:59

What you want is something called an "obfuscator". Do NOT use the obfuscation crap that came with VS2008 (because it won't do what you need it to do). Buy a 3rd party tool. Get one that encrypts the strings and creates a native binary out of your assemblies. The problem is that he can look at your code with Defender and figure out what your assemblies are doing, and can therefore use your DLLs in his own code.

Now that you know how to fix your assemblies, you have to figure out a way to remove the "open" versions from the user's computer. Good luck with that (because now that they're out there, you're hosed).

"Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997
-----
"...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Re: Preventing another application from calling code of my application.

PIEBALDconsult5-Apr-09 4:07

PIEBALDconsult

5-Apr-09 4:07

You would need some sort of license scheme so the methods can validate that they were called by an allowable application. It would slow your application down, and probably isn't worth the trouble.

Re: Preventing another application from calling code of my application.

Natza Mitzi5-Apr-09 9:38

Natza Mitzi

5-Apr-09 9:38

There is a problem using obfuscation and UI since one can iterate through all types and create instances of forms and controls. You can solve this by having all forms and controls inherit your own type (that inherits from UserControl or Form) and that type requires that some static flag was raised in the application or else...
This way radomly generating types will just raise exceptions. Adding this just adds another small barrier for people trying to look at your code and does not solve the problem.

Natza Mitzi

Need Some help

subrata saha5-Apr-09 0:30

subrata saha

5-Apr-09 0:30

Hi,
I want to make a web service application in ASP.net which will consume RSS Feeds from different website. Can some one provide me some example application which already dose this or some idea how to do this.
Please give me some idea .......
Cheers..

execute web page simultaneously

Yosh_5-Apr-09 0:26

Yosh_

5-Apr-09 0:26

hi all,
pls, how can i execute another web page without leaving the one i currently am?
i try it like this:

HttpApplication httpApp = new HttpApplication();<br />
        httpApp.Server.Execute("addFriend.aspx");

but it doesn't work.
pls, how can i achieve this?

He who goes for revenge must first dig two graves.

Merge MenuStrip in MDI form

baranils5-Apr-09 0:22

baranils

5-Apr-09 0:22

Hello

I'm trying to merge a main menu strip and a childs menu strip but I can't get the expected result

1- I have a Main form mdiMain and a child fomr mdiChild
2- mdiMain contains mnuMain, mdiChild contains mnuChild
3- Both mnu have a File item : New; Open; and exit for main,, Save, Save As, Import for child
4- both mnu have allowmerge to true
5- I set the merge option of the Main file item to insert
6- I also set the merge option of the Child file item to insert

7 So I expect a result like
New
Open
Exit
Save
Save as
Import

BUT
I only get the Main File Menu
New
Open
Exit

Do someone knws how to do it

Thanks very much for any help

Re: Merge MenuStrip in MDI form [modified]

Eddy Vluggen5-Apr-09 5:59

Eddy Vluggen

5-Apr-09 5:59

Does it help if you alter the MergeOption to Append? Or could it be that the constructor isn't creating the mnuChild-component?

I are troll Smile | :)

modified on Sunday, April 5, 2009 12:07 PM

Re: Merge MenuStrip in MDI form

baranils5-Apr-09 6:21

baranils

5-Apr-09 6:21

Thank you

No, it does not change anything

BUT I have the solution
It is necesary to set the head item (File in this case) to MatchOnly
Then set each items in the child menu to the needed value (Insert, append...)

A little bit tedious is the need to set the Exit item in the Main menu at the end

To do that it is necessary to sell all items in the child menu to Insert with the proper index

Extract the in-betweens...

jas0n234-Apr-09 23:52

jas0n23

4-Apr-09 23:52

Hey All!

I've been readin' up on Regular Expressions alot lately because I need to Extract words inbetween HTML tags for example I need to extract the words 'extract this!':

<title>Extract this!</title>

and also:

<a href="http://www.ilikethissite.com/">Extract this URL</a>

I have followed many examples and read MSDN and I just can't get it to work. Can anyone please shed some light on this matter? Thanks in advance

Jay.

j.t.

Re: Extract the in-betweens...

Christian Graus4-Apr-09 23:59

Christian Graus

4-Apr-09 23:59

Use regex grouping to match the bits you want to keep and build a new string, or to match the bits you want to remove, and then remove them.

Christian Graus

Driven to the arms of OSX by Vista.

"I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

Re: Extract the in-betweens...

jas0n235-Apr-09 0:29

jas0n23

5-Apr-09 0:29

Yay! Thanks lots Christian Graus.

j.t.

Re: Extract the in-betweens...

12Code5-Apr-09 1:08

12Code

5-Apr-09 1:08

jay_t55 wrote:
need to extract the words 'extract this!':

<title>Extract this!

Here you go..

string str = "<title>Extract this!</title>";
Regex RE = new Regex(@"(<title> )(\w|\S|\s )+(</title> )");
MatchCollection MC = RE.Matches(str);

if (MC.Count == 0) MessageBox.Show("No match");
foreach (Match M in MC)
{
    string trimStr = "</title>";
    MessageBox.Show(M.ToString().Trim(trimStr.ToCharArray()));
}

8.Kelvin()
{   
  while (!(the machine can program itself))
     Wont_stop_coding = true;
}

Re: Extract the in-betweens...

jas0n235-Apr-09 2:06

jas0n23

5-Apr-09 2:06

Wow! Thank you so much 8Kelvin, very much appreciated!! Big Grin | :-D

Jay.

j.t.

Re: Extract the in-betweens...

#realJSOP5-Apr-09 3:01

#realJSOP

5-Apr-09 3:01

What you want is an HTML parser (google is your friend). Don't mess around with regex because you'll spend a lot of time trying to figure it out. Believe me - downloading a parser will be much faster.

Re: Extract the in-betweens...

PIEBALDconsult5-Apr-09 4:16

PIEBALDconsult

5-Apr-09 4:16

Hear hear! This is a wheel best not reinvented.

Get string size in bytes

Harvey Saayman4-Apr-09 23:36

Harvey Saayman

4-Apr-09 23:36

Hey guys

I need to get the size of a string in bytes, how do i do that Confused | :confused:

Harvey Saayman - South Africa
Software Developer
.Net, C#, SQL
you.suck = (you.Passion != Programming & you.Occupation == jobTitles.Programmer)
1000100 1101111 1100101 1110011 100000 1110100 1101000 1101001 1110011 100000 1101101 1100101 1100001 1101110 100000 1101001 1101101 100000 1100001 100000 1100111 1100101 1100101 1101011 111111

Re: Get string size in bytes

Luc Pattyn4-Apr-09 23:39

Luc Pattyn

4-Apr-09 23:39

Harvey Saayman wrote:
the size of a string in bytes

what size? what is your purpose?

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets

Re: Get string size in bytes

Harvey Saayman5-Apr-09 2:28

Harvey Saayman

5-Apr-09 2:28

Im trying to send a request to a IM(MXit) server, to protocol documentation states that the length of the request must be pre-pended to the request...

Re: Get string size in bytes

Luc Pattyn5-Apr-09 2:44

Luc Pattyn

5-Apr-09 2:44

Hi,

if the API you are using expects a Unicode string, then I would expect the length is the number of characters, not bytes.

in the more likely case the API expects a byte array, you would need an Encoding (maybe Encoding.ASCII, Encoding.UTF8, or new Encoding(1252)) and use its GetBytes() method. In such case the length would be the length of the byte[].

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Re: Get string size in bytes

Eslam Afifi4-Apr-09 23:56

Eslam Afifi

4-Apr-09 23:56

You mean the size of the string in a specific encoding? for example,

Encoding.UTF8.GetByteCount(theString);

Or the size of a string object in memory? which depends on implementing platform[^]

Eslam Afifi

Getting the type from a string, any magic for this in C#?

ioctl514-Apr-09 22:30

ioctl51

4-Apr-09 22:30

If i have a string, lets say the string is "System.Float".

Is there anyway i can get the type from that string? (ie a float).

And do something like this:

Float f = new GetMagicTypes<"System.Float">();

Re: Getting the type from a string, any magic for this in C#?

Steve Echols4-Apr-09 23:15

Steve Echols

4-Apr-09 23:15

Huh?

You can get the type using: Type.GetType("System.Single"), etc, but you can't use that as a template argument.

And your example is going to create a GetMagicTypes object, not a float.

GetMagicTypes<float> f = new GetMagicTypes<float>();

What are you trying to accomplish?

- S
50 cups of coffee and you know it's on!
A post a day, keeps the white coats away!

Re: Getting the type from a string, any magic for this in C#?

ioctl514-Apr-09 23:26

ioctl51

4-Apr-09 23:26

What im doing is that im parsing the object type from xml, so i need a way to allocate an object of the type in the string.

Something like this then maybe:

Float f = new<type.gettype("system.float")>();

Ofcourse i could do this:

if("System.Float" == type)
Float f = new System.Float;
elseif("System.Boolean" == type)
Boolean b = new System.Boolean;

But that is an unnessecary thing if c# has support for string<->type conversion

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.