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Hello All,
I need a technical help, which is related to Performance and Application Design issue.
I have a function, which is accessible from a page alone. Now the question is which is the best approach - To keep the function in my Code-behind file itself or keeping it in a class module and call it.
Which is the best way to do. For this if you got any supportive documents also pls do send me ASAP.
Thanks in Advance.
Regds,
Kandasamy.
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There are several related questions that point in one direction or the other. Primarily, where and how often do you intend to use a function, and what information does the function act upon? For example, if a function returns a SqlDataReader that lists a customer's recent orders by customer ID, the function probably belongs in a class like "OrdersData"... thus making it available to any method within the entire application. If, on the other hand, it is some kind of static/shared function, for example, a function that takes a datetime value and returns a formatted, human-readable date & time string, and you expect it to be called several times in several different classes, you could have a class library of "helper functions". Or, if it is a function used only by one page for one reason, leave it as a member of the page class.
But then again, I could be wrong.
What a piece of work is man, how noble in reason, how infinite in faculties, in form and moving how express and admirable . . . and yet to me, what is this quintessence of dust? -- Hamlet, Act II, Scene ii.
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My windows service is strong names by putting
<assembly: assemblykeyfileattribute("c:\mykeyfile.snk")=""> in assemblyinfor.vb
But when I write a setup and deployment package for it and set it up I get the error :
Unable to create an instance of (my installer class) installer type. ->Exception has been thrown by the target of an invocation.-> Security Error
Any one got any idea how to get round this?
MOO!!
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Don't know if this is a known issue, but Application.EnableVisualStyles does not work on vertical scrollbars (I assume it won't work on horizontal scrollbars either). Oddly, if I use a create .manifest file for my .exe, the vertical scrollbars will indeed get the XP Visual Style.
The graveyards are filled with indispensible men.
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Hi,
Does anyone know where i can find some info about compiled .exe/.dll files' format? In other words, how can I extract IL assembly instructions from a .exe/.dll file? (well, i can use the 'ildasm' to get the IL instructions, but I wanna know how it does that since I'm gonna have a project dealing with those binary files).
Any answer, book or link is appreciated!
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download reflector or anakrino
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.NET executables are PE/COFF files (Portable Executable / Common Object File Format). The instructions are stored in the "text" section, the class and method tables are stored as meta data.
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Hi,
First of all, thank for the answer.
Do you know how i can idenfify the "text" section? Is it started or ended with a special character or what? When a open an execuatble file with a hexdump program, i see alot of junks, although I can see different sections of junk.
Also, I assume each instruction is equivalent to a hex opcode, but i can't find a reference to all of the opcodes. Anyone knows?
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Hello again,
I just tried to download the ofiicial Microsoft PE/COFF specification. The .doc and .pdf versions don't exist, you'll only get a "Sorry, the page you requested.........". 
But the compressed .doc (pecoffw.exe) is still there 
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http://www.dotnetspider.com/technology/
This site offers C# tutorials for beginners. C# and .Net explained in simple ENglish and ste by step.
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Well I had code break on a compiled version of a Visual Basic .net application that was in use. Here is the story.
Environment: Windows network using Windows 2000 advanced Servers and Windows 2000 workstation Service Pack 4. .net Applications written with .net framework 1.1
The other day we had a series of security upgrades deployed on our network. As soon as that happened a Visual Basic .net application in use for some time developed numerous problems and was generating error messages all over the place. On workstations that had earlier versions of the .net framework, those versions had been removed and only the latest version which had been installed during the security upgrades remained.
I looked at the source code of two applications written in vb.net and found the following problem. All Catch statements that worked previously had an error in the source code when I examined it. The basic Catch statement Catch ex as exception no longer was valid. the squiggly blue line appeared under the ex. To rectify the problem I was required to type:
Catch ex as System.exception
Obviously the reference for System had always been present in the application. Just as an experiment I added Imports System to some of the class modules, but I was still required to type system.exception where ever a Catch statement was used in the apps that existed prior to the network upgrades. If I create a new project however, catch ex as exception statement doesn't have an error and the code compiles with no need to use the expanded system.exception. But in the .net apps that were written before the upgrade that code errors 100% of the time on catch statements and I must now type system.exception in all my catch statements.
I have tried deleting the references and re-entering them and all sorts of other tricks. I am pretty sure that those older apps are looking for a different version of the framework that is no longer there.
I could just leave all the syntax changed to Catch ex as system.exception but I am worried about the implications of what has happened to cause this code to break, and would sure like to know how to fix the problem without having to change code that shouldn't be broken.
Any thoughts or suggestions would be greatly appreciated.
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I have a large enterprise application. It involves 50 - 100 seperate .exes and several thousand .dlls. We want to group the .exes in their own directories with the .dlls they use. There are about 100 base .dlls that are commonly used. We would like to keep these in a single directory and let all the other apps use them.
This does not appear to be possible. We can place them in the Global Assembly cache, but they have to be strongly named. If I understand correctly, using strong names will require me to rebuild all the apps that reference them each time we change one of the base .dlls.
The ony other alternative seems to be to put a copy of each .dll used by an application in the same directory as the application. This causes us to have many locations to keep synchronized, or keep all the .dlls and .exes in the sam directory.
Is there a better way?? Am I missing something here?
Thanks for any help I receive.
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You might be able to load all those dlls manually at start up.
Just use Assemlby.Load, or you might register event hanlder for AppDomain.AssemblyResolve and then load the assembly if it can't be found thru normal lookup.
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You can also setup different paths for AppDomain.RelativeSearchPath or AppDomain.DynamicDirectory
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Hey
I have a .NET remote server application I want to access from a smart device(.NET compact framework). Is there any other way, than webservices to access this remote server? I can't find the .NET remote for the compact framework.....
best regards
Rasmus
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Hi All
I have a MFC client wich is a part of big 3-tier application. Recently, I've begun to convert some parts of it into managed code.
By that, I mean that I rewrote some components of the app using C# and imported them into my app as a COM components (including the communication with the server wich I changed from COM+ to .Net remoring).
It works fine, but when I close the application I get exception in call to corExitProcess().
Does anybody know something about that?
Do I have to shut the CLR in some way?
thanks!
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I suspect you're violating some condition that the CLR is relying on.
I suggest running your code using CLR SPY[^] and working from there.
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Have any ideas what can it be?
i've tried the CLR Spy and it doesnt show me any errors.
thanks
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Anonymous wrote:
It works fine, but when I close the application I get exception in call to corExitProcess().
A shot in the dark but it sounds as if your unmanaged code hasn't detached from the managed process thread. Have you tried catching the exception?
- Nick Parker
My Blog
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I'm developing a UserControl. It would be a lot easier if the UserControl could act as a container for forms except for that "Cannot add a top level control to a control" thing...
Right now I can add 'simulated' forms on the fly that are actally panels. It works OK but they don't look and act EXACTLY like a form.
It would REALLY be nice if my UserControl would act like an MDI form so that I could add child forms to it on the fly...
I guess you'd be able to add a MainMenu too - just think if you could just drop an MDI form on top of your UserControl. Don't laugh - I'll bet some guru out there has figured this out...
Any suggestions?
JerryT
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Dare I ask why you don't use Form or inherit Form?
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Hello All,
I need safe functions like "FloatToInt32Bits" and "Int32BitsToFloat",
equivalent of the "BitConverter.DoubleToInt64Bits()" and
"BitConverter.Int64BitsToDouble()"
Any help?
Best regards,
Paul.
Jesus Christ is LOVE! Please tell somebody.
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