.NET (Core and Framework)

.NET My Services SDK/HsSoapExtension

8-Sep-02 11:01

1. You got to use regasm.exe first (or tlbexp.exe) to produce a .tlb and register the object.

2. Provide implementation for this interface in your class. I believe at this point you've got to use special attributes such like ComSource.

MS quote (http://www.microsoft.com/ddk) : As of September 30, 2002, the Microsoft® Windows® 2000 DDK, the Microsoft Windows 98 DDK, and the Microsoft Windows NT® 4.0 DDK will no longer be available for purchase or download on this site. Support for development will ship at the same time as the Windows XP Service Pack 1 (SP1) release.

C# or C++ ?

Maximilien6-Sep-02 3:06

Maximilien

6-Sep-02 3:06

There's a thread in the lounge that talks about what to use to start a new project for .NET; most says that C# is the way to go, over Managed C++.

Why ? isn't it the same ? isn't the same .net framework ? the syntax is different, but that's no biggies, I can live with it, so what's the difference ?

I have the Visual C++.net box and doesn't come with support for C#, but there's a csc.exe ( C# compiler ) somewhere on my machine, is it the same compiler that would come if I bought the C#.net box (or the full visual studio )? I tries to compile a simple "hello world" program with that csc.exe compiler and it looks ok!

Thanks.

Max.

Re: C# or C++ ?

Kevin McFarlane6-Sep-02 7:28

Kevin McFarlane

6-Sep-02 7:28

Max,

You can, of course, use MC++. It's just that C# is a lot easier. For example, you have drag-and-drop widget support for C# but not for C++. The best thing to do is have a look at Microsoft's recommendations in the online help or at the MSDN site, e.g.,

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmex/html/
vcconFeaturesOfManagedExtensionsForC.asp(When to Use Managed Extensions for C++)

Kevin

Re: C# or C++ ?

Paul Ingles8-Sep-02 10:41

Paul Ingles

8-Sep-02 10:41

Managed C++ can do a few things that C# can't, firstly you can produce regular unmanaged applications as well as .NET applications (which you can't with C#). You can also mix and match managed and unmanaged code in the same application, so from a regular MFC app you can make .NET calls.

Not to mention that you already have the VC++.NET box, so you have the IDE to make it easier. There's nothing to stop you using the csc compiler, but it'll get really tough once you start to do anything more than a simple program.

If you've not used VC++ 6 (or any other version of VC++) then you should be in a good position to get on with the VC++.NET IDE.

I personally would recommend going with MC++ (despite its messyness) since if you get on with that you open yourself up to being able to produce almost anything.

--
Paul
"I need the secure packaging of Jockeys. My boys need a house!"
- Kramer, in "The Chinese Woman" episode of Seinfeld

MS Messenger: paul@oobaloo.co.uk
Sonork: 100.22446

Phil Harding6-Sep-02 2:38

Phil Harding

6-Sep-02 2:38

Does any one know where to get hold of the .NET My Services SDK, specifically the HsSoapExtension project?

Phil Harding

Re: .NET My Services SDK/HsSoapExtension

elnino10-Sep-02 7:02

elnino

10-Sep-02 7:02

Hi,
There was a special site (i found it from MSDN hailstorm) devoted to this where SDK could be download with subscription but it seems subs close on may Frown | :(

Adding Tree control to a webform (ASP.Net)

dre@mer5-Sep-02 1:28

dre@mer

5-Sep-02 1:28

i cant add a tree control to a web form in ASP.Net..please if any body has any idea about this ...do let me know

Howto: Plugins in .NET app?

Anonymous5-Sep-02 0:31

5-Sep-02 0:31

Hi,

How do I go about creating a plugin architecture for my .NET application? The plugins should be able to access the object model (receiving events and performing validation) and to extend the UI.

First of all, do I have to create a new AppDomain? If yes, one for each plugin or one for all?
Second, if I've loaded a plugin Assembly, what do I do then??? How do I connect it to my application?

Or am I on the wrong track and need a completely different approach?
Are there any samples, walk-throughs, guidelines etc.?

Thanks in advance for any help you might provide.

Regards,
Andreas

Stephane Rodriguez.5-Sep-02 1:08

5-Sep-02 1:08

Plugins are now old fashioned when you regard that System.Reflection allows you to create classes, compile them, and add them to your code while it's running.

You may of course end up loading custom user Assemblies after your program has been released, but that's not there the true power lies : custom user Assemblies must export functions whose signatures are already known by you BEFORE you have released the program.

Good luck!

And I swallow a small raisin.

Anonymous5-Sep-02 3:20

5-Sep-02 3:20

And this means practically...?

I did have a brief look at the .NET documentation on dynamic assemblies, but I figured out that, this way or the other, I ended up getting a System.Reflection.Assembly, right?

The idea is, that users should be able to extend the basic functionality of the app. Is this an old-fashioned concept? I see this as a critical point for the success of my (freeware) program in order to compete with products already on the market.
There are certain regional validation criteria that need to be taken into account, but I cannot code them into the main program because I simply don't know all of them and never will. So therefore I am looking for a way of letting the program be extended through some kind of addin modules. I don't insist on using precompiled assemblies, they could be compiled JIT.

But my problem remains: How do I make them interact with my app?

An addin would have to consist of one or more classes derived from a predefined abstract addin class, wouldn't it? Then, the constructor could receive as a parameter a reference to one of the necessary objects.
But how do I get to such a class if I don't know the name of the class? That I would need for Assembly.CreateInstance().
And if I somehow managed to create an instance of such a class, wouldn't I run into problems with the GC sooner or later, like with .NET Remoting?
And do I need one or more private AppDomains or would I load it into the AppDomain of my app. Are there any requirements and advantages/disadvantages?

Regards,
Andreas

Stephane Rodriguez.5-Sep-02 3:31

5-Sep-02 3:31

Answering your question in full extent requires more than a textarea.

May be it's me, but you seem to explain things as a true callback C-style programmer.

Java and C# have a different paradigm.

In this paradigm, a plugin for instance subscribes for predefined events you expose in the program. Doing this, nor your program, nor the plugin are not stuck with predefined method signatures, useless marshalling and stuff.

As for freeware and competition, I just would like to tell you that you should balance the usefulness of a .Net application instead of a standard C/C++/MFC/VB or even Java app. In other words, users of your freeware will have to download 21MB of run-time (+6MB for SP2), just to run your .exe. As long as they don't, they'll get a nasty "missing mscoree.dll", and chances are they spit on you and throw the freeware to hell. Big Grin | :-D

And I swallow a small raisin.

Anonymous5-Sep-02 4:15

5-Sep-02 4:15

Sorry, but I am not a C programmer. I'm not that old! Wink | ;-)

I do know Java, C++/MFC, C#/.NET, say OOP in general. And I was definitely not thinking of callbacks, that is not even possible in this case. My problem is that, until now, I have only written (non-extensible) standalone programs and am not familiar with any kind of plugin/addin/othernameforextension architecture programming, neither C-style nor C#-/Java-style.

I have an *object model* (object-oriented) with what I would see as "predefined events". And I didn't intend to call plugin functions *from* that OM in any callback style, I did want the *plugin* to register for the events it needs. The question is: How?

I do not feel bound to any specific programming paradigm, I was just asking for *any* way to have an extensibility mechanism ... I am open for any OOP approach to this problem!

Regards,
Andreas

P.S. I do "need" the .NET Framework for this programming task, regardless of its download size.

Stephane Rodriguez.5-Sep-02 4:37

5-Sep-02 4:37

Anonymous wrote:
The question is: How?

Short answers :
- declared events are made public in the assembly, so that the plugin assembly can register one or more of these events by adding a reference to the main assembly, and creating new event instances.
- assemblies can be dynamically emitted or loaded with a .config file, a separate file from the main assembly.
- that said, assemblies may communicate explicitely, not explicitely, synchronously, asynchrounously, use a message queue, etc. that's up to you and your requirements. In fact, that's your specific use of the .Net framework.

Long answer : answering the question is as broad as answering the question : "I want two programs to communicate, how ?"

Now good luck! I am not an interested party here, but from what I see on the MSDN samples for instance, you have plenty of code to begin with. Cool | :cool:

And I swallow a small raisin.

Anonymous5-Sep-02 9:56