.NET (Core and Framework)

18-Feb-04 21:44

Assuming you already looked under the "COM" tab of the add reference dialog box, the Component name used when creating a late bound control in VB6 using CreateObject often differs from the name displayed in the add reference dialog box. As an example, to create an Excel application reference in VB6, you could do this:

xl = CreateObject("Excel.Application")

but when you look in the VS.NET add reference dialog box, it is described as the "Microsoft Excel 9.0 Object Library".

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.

To DOTNET or NOTDOTNET

RichardGrimmer18-Feb-04 2:56

RichardGrimmer

18-Feb-04 2:56

Hi guys,
Have been handed a job to do from down on high....my company are looking at using ASP.NET for some new modules in an existing ASP classic application.

My boss is concerned with the end-user issues connected with .NET - not the benefits, but the sort of SysAdmin problems that installing the framework might create, such as existing apps not working etc....

Can anybody share their experiences, or point me to some resources on the subject?

"Now I guess I'll sit back and watch people misinterpret what I just said......"
Christian Graus At The Soapbox

Kevin McFarlane18-Feb-04 6:19

Kevin McFarlane

18-Feb-04 6:19

As far as the clients are concerned there should be no issues (just as there are no issues if you point your browser to a page that ends with a .aspx extension). You only have to be concerned with the server machines that are hosting ASP.NET, which must of course have .NET installed on them.

Kevin

John Kuhn18-Feb-04 20:13

18-Feb-04 20:13

Classic ASP can co-exist peacefully with ASP.NET on the same machine, provided, of course, that the machine meets all the other requirements to run the .NET framework and ASP.NET.

That being said, there are potential issues if you try to integrate ASP and ASP.NET together, since they don't share session state, application state and so on. There are articles on how to make them work together if you look around.

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.

devvvy20-Feb-04 0:53

devvvy

20-Feb-04 0:53

But, isn't there some issues with passing Application/Session variables from ASP applications to ASP.NET applications.

Norman Fung

John Kuhn20-Feb-04 7:30

How many end users have .Net Installed?

20-Feb-04 7:30

Yes, as I mentioned, "there are potential issues if you try to integrate ASP and ASP.NET together, since they don't share session state, application state... "

That can be overcome, to an extent, by not relying on Application and Session if you have to put the two together. One could use query strings, hidden forms, etc. It's more work, but it might be a way to gradually transition an app from Classic to .NET.

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.

Furty17-Feb-04 13:39

Furty

17-Feb-04 13:39

We are currently scoping a new (smallish) project, and need to make decision as to whether we develop it in .Net or C++.

Does anyone know of any statistics that detail the distribution of the .Net framework on desktop systems?

Re: How many end users have .Net Installed?

Colin Angus Mackay17-Feb-04 22:20

Colin Angus Mackay

17-Feb-04 22:20

Why not just have your applications installation package install the .NET Framework. It is freely redistributable.

Re: How many end users have .Net Installed?

Judah Gabriel Himango19-Feb-04 8:57

Judah Gabriel Himango

19-Feb-04 8:57

I've been in the same situation. If your software is distributed over the web to end users you have no control over, .NET is a HUGE requirement. I've asked this question in other forums and to some MS people; it's really strange how some people have a hard time understanding that .NET is indeed a very difficult pill for end users to swallow, thanks to it being over 21 MB.

My thought is this:

.NET will be everywhere by 2007. Until then, it's a guessing game; while a vast majority of desktops have XP, only some of them will have .NET. If your product is small, and will be finished within a year, and will be distributed over the web, I'd say use C or C++.

If your product is fairly large project that will take a year or more to develop, or will be distributed on a physical media, then yes, write it in a .NET language for productivity's sake. By the time your product is released, many more users will have the .NET framework installed already, and you'd be even closer to Longhorn, when everyone will have the framework installed.

My rant is that MS needs to get .NET to the masses sooner than Longhorn. If they would just bundle it with Office or IE, questions like these wouldn't arise and they'd get more developers writing .NET-based software.

The graveyards are filled with indispensible men.

dataadapter fill performance problem

MySmallfish17-Feb-04 9:50

MySmallfish

17-Feb-04 9:50

Hi i have a strange problem:

i use code like this:

ODBCConnection cnn = new ODBCConnection("... cnn string ...");
ODBCDataAdapter da = new ODBCDataAdapter("select * from tbl left join tbl2
on tbl.refid = tbl2.id", cnn);
DataTable dt = new DataTable;
DateTime t = Now();
da.Fill(dt);
TimeSpan ts = Now.Substruct(t);
Trace....... Show the ts.

.....

i use this code in 2 programs:
(the remoting server is a console app.)
position:
Time
1. remoting server program on a marshaled object
in static method.
8.7 seconds.
2. the same server, but in the main file.
5.4 seconds
3. the client, in the remoting object (the same
method as 1, but i know here it is not the same
remoting object).
4.2 seconds.

4. different console program( that not using any
remoting, built to the test.)
0.5 second !

u see a huge changes between these methods.
I operate the 2 programs (remoting and test) concurrently and the results
was the same +-.
so i assume it is the remoting that affect the Fill method.
but why ??
what could be the reason ??
if any1 want i will send him the remoting configuration section in the
config file so he might watch it...

How to implement Drag and drop feature in my web page?

kandasamyg17-Feb-04 1:14

kandasamyg

17-Feb-04 1:14

Hello,

Does anyone know about How to write a code for custom controls which the user can do drag and drop feature while browsing the page. For Example i am having a login control in my let hand side, at the time of browsing the user can change the location to right hand side by just doing drag and drop facility.

Is it possible to do? Any documents for this or any procedures?

Thanks in advance.

Best regds,
Kandasamy.

" BE extremely passionate about what you do. Combine it with patience, confidence in your abilities and a dedicated team of professionals. Sucess is inevitable "

Code-Behind File Vs Class Module

kandasamyg17-Feb-04 1:03

kandasamyg

17-Feb-04 1:03

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.

Re: Code-Behind File Vs Class Module

John Kuhn18-Feb-04 21:38

Security error Installing a strong named assembly

18-Feb-04 21:38

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.

Ægidius Ahenobarbus16-Feb-04 12:24

Ægidius Ahenobarbus

16-Feb-04 12:24

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!!

.EnableVisualStyles bug

Judah Gabriel Himango16-Feb-04 10:34

Judah Gabriel Himango

16-Feb-04 10:34

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.

binary MSIL file format?

aiwadisc15-Feb-04 20:50

aiwadisc

15-Feb-04 20:50

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!

Anonymous15-Feb-04 23:09

Anonymous

15-Feb-04 23:09

download reflector or anakrino

Corinna John15-Feb-04 23:42

Corinna John

15-Feb-04 23:42

.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.

aiwadisc16-Feb-04 10:04

aiwadisc

16-Feb-04 10:04

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?

Corinna John16-Feb-04 19:30

Corinna John

16-Feb-04 19:30

A COFF begins with a couple of header of fixed size, followed by section headers (which contain the size of the sections) an the content of the sections.

I recommend this book, it contains a good description of all headers and sections:
http://www.halfpricecomputerbooks.com/book/0735615470[^]

For a general COFF specification you should read this: http://www.delorie.com/djgpp/doc/coff/[^]

The Microsoft specification is available here: http://www.microsoft.com/whdc/hwdev/hardware/PECOFF.mspx[^]