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Thanks, Max,
Yeah, I can see that some of the friends suggesting an approach such as is provided with visualwebgui would take some of the pain out of the events versus page lifecycle paradigm. Either way, it's a total change of thinking, which all comes from the issue of sending bytes along a wire asynchrounously instead of counting on resources (code) being instantly available to "answer" some event.
Actually, I think the whole asynch paradigm is what we will all need to do within the next few years. It might be good practice to use delegates for everything within some sub-project just to get used to it. In fact, (philosophising here) I believe asynch thinking is probably more real-world than what we do now, which is like tugging a string and expecting the other end to move. It's like you have a message, so you put it in a bottle, throw it in the ocean, and then you need 100 people to watch the beach for "if and when" an answer comes back in a bottle. The real world works like that - when you order some product by phone or on a website, it's only when the product arrives at your door that you know you have it. Some truck 1,000 miles away brought it, but you weren't pulling the truck along a wire to make it arrive. Things are inherently disconnected in the real world. The days of quickbasic are gone ha ha ha.
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I'd say that the best way would be to avoid rewriting the entire application. I imagine that your application consists of multiple, smaller modules that interact?
How about adding functionality that allows interaction over the web, without ditching the desktop-application? What starts with writing a webpage to retrieve/modify configuration-settings could very well grow into a separate interface over time 
I are Troll 
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Right, continue the evolution.
Any ideas what may be the best technologies to use? This WebMatrix looks promising.
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Where are you storing your data in the desktop-application? If you already have Sql Server, you'd only need a webserver that's capable of running ASP.NET. I'd go this classic route, but only because I'm familiar with it. I haven't tried the WebMatrix package (yet), but does look like a good place to start.
It contains a webserver, and Sql Compact. That setup might not support stored procedures, and other Sql Compact limitations would apply.
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Thanks again Eddy!
The back end is sql server, mostly express, and has some stored procs.
The whole webserver thing is a big black hole to me, which is part of why I posted the question. I haven't been following all the best practices, etc. But one big concern is that I want my customers to be able to use it with whatever system they currently have. E.g. if they're not running IIS, I don't my app to be eliminated on that basis.
I see what you mean about WebMatrix. It may not be suitable. But I get the impression we may see more of this kind of "grouping" of products to hopefully "simplify" the whole issue of "making your windows desktop app work on the web".
I think from the answers I have received so far, we are not "there" yet. 
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BobishKindaGuy wrote: I haven't been following all the best practices, etc.
That means that you're talking about a business-application, not something that specifically designed to be used in a text-book for a cs-class. Code grows, and usually the amount of best-practices used therin do so to.
BobishKindaGuy wrote: But one big concern is that I want my customers to be able to use it with whatever system they currently have. E.g. if they're not running IIS, I don't my app to be eliminated on that basis.
Good point. I'm running an Apache webserver, with Mono. Serves ASP.NET code quite nicely, at no cost. A nice extra is that you can brag on being compatible with Linux
BobishKindaGuy wrote: But I get the impression we may see more of this kind of "grouping" of products to hopefully "simplify" the whole issue of "making your windows desktop app work on the web".
Ever heard people complain on the price of Office? A grouping of products is often perceived as a single product that happens to consist of different parts.
I'm looking forward to meet a decent follow-up for Microsoft Access. WebMatrix sounds like it may come close to that 
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Eddy Vluggen wrote: I'm running an Apache webserver, with Mono. Serves ASP.NET code quite nicely, at no cost. A nice extra is that you can brag on being compatible with Linux
YES!
Thanks for that. I didn't know about that.
One more piece of the puzzle is in place.
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When the app is well-structured into several layers (UI/presentation, business logic, data access), you could reuse most layers unmodified, and simply modify/add another presentation layer. If it isn't well-structured yet, now is the time to spend the effort.
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Perfect answer
DaveIf this helped, please vote & accept answer!
Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.(Pete O'Hanlon)
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
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Thanks, Dave.
Your signature line urges folks to accept an answer. I do want to acknowledge any contribution, but here's a question: Do you feel that "accepting" too quickly might cause some people who may have a valuable contribution to ignore the topic since it appears to have been "dealt with"?
(My question stems from not being aware of how people tend to judge whether to visit topics when trolling CodeProject.)
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In quick answers quite possibly, but not in the forums (IMO).
DaveIf this helped, please vote & accept answer!
Binging is like googling, it just feels dirtier.
Please take your VB.NET out of our nice case sensitive forum.(Pete O'Hanlon)
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
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Thanks for your comments, Luc.
Yes, I actually had browser UI in the back of my mind from the very start, but laziness and incompatible coding practices have probably produced a wrinkly outcome.
Every time we open a quote, for example, we should have the discipline to put the string in some sort of a localization module, but our mind is on the logic required to solve the problem.
So let's say I decided to implement your idea. I still wonder what framework would be "sufficient" to go forward with. WebMatrix? Even a year ago, there were tutorials surrounding Silverlight that have now been superceded by concepts available directly in VS2010. E.g. xaml coding is reduced now. Maybe waiting one more year would allow all these ideas to mature and be "stable" enough to adopt. I hesitate to invest hundreds of hours into something that will prove to be defunct in a few months. One MS rep told me a little over a year ago that LINQ was not too great for many-to-many type of data relationships, and my app has quite a bit of that.
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If you don't want to choose some technology that may fade away in a matter of months or years, why not use something that has been around somewhat longer already? Start by looking at ASP.NET plain and simple. Once you have restructured your app, that is.
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Luc Pattyn wrote: why not use something that has been around somewhat longer already?
I haven't been following all the discussions, webinars, training etc, but my impression is that newer technologies eliminate a lot of plumbing type of code that I would prefer not to have to teach myself. E.g. when ajax first came out.
Also, I want whatever I do to look way cool, so I'm afraid that if I go with the older stuff, it might look like some windows 3.1 thing. To compensate for that, I've considered 3rd party tools like the really nice devexpress controls, etc. I haven't gone there either, here's my reason: If my app were in-house, rather than commercially marketed (my "team of one" includes wearing the marketing hat as well), it would probably be okay. But I avoid 3rd party dlls as much as possible, so my version updates are not driven by 3rd party compatibility issues/bugs.
I really appreciate all the feedback I'm getting! When you work alone, you need other voices and someone to bounce ideas off.
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BobishKindaGuy wrote: Also, I want whatever I do to look way cool
No, you don't. You want whatever you do, done right.
A working Windows 3.1-application will always beat an exception in Silverlight 6 in terms of usability. Make sure you produce a car that can be used for driving, before you start pimpin' it.
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Eddy Vluggen wrote: No, you don't. You want whatever you do, done right.
I hear you. The first priority is to produce a stable working model, then shine it up afterwards. But the shine must come before you show it to the world, at least in some environments, wouldn't you agree?
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BobishKindaGuy wrote: But the shine must come before you show it to the world, at least in some environments, wouldn't you agree?
I'll agree that there are environments that judge a car by it's paintjob 
Good wine needs no bush.
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Yeah, I hear ya!
But a few years ago, I was in the market for a car, and I did hesitate to buy the Lada. Could have been a good car, it even shipped with a toolkit so you could fix it yourself. But something about it didn't inspire confidence.
Philosophizing here: What we really need is a "car", instead of all these throwaway junk boxes. Capitalism! Competition! It's creating huge scrap heaps! Whereas "cooperation" would produce a nice solid, reliable, simpler, and durable product, like say a stainless-steel car.
I think it's similar here. What we need is a reliable product, not a glitzy one. But some of the grace built into a product to make it look cool also can end up making it seem more intuitive to the user. I've always put a lot of thought into the UI. Maybe too much, and I'm sure your comment is meant to help us balance the two concerns. I am listening!!
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BobishKindaGuy wrote: Philosophizing here: What we really need is a "car", instead of all these throwaway junk boxes. Capitalism! Competition! It's creating huge scrap heaps! Whereas "cooperation" would produce a nice solid, reliable, simpler, and durable product, like say a stainless-steel car.
I'd like to defend the opposite opinion, but that would have to be done in the soapbox
BobishKindaGuy wrote: I've always put a lot of thought into the UI. Maybe too much, and I'm sure your comment is meant to help us balance the two concerns.
Maybe I'm just being religious on the subject, but I've got a good excuse; I'm wearing a developers hat. Adding Window-dressing would be a waste of system-resources, but a good marketeer will insist on it if it helps in promoting the product.
Are you familiar with the UX guide[^]?
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Eddy Vluggen wrote: Maybe I'm just being religious on the subject
No, I think your thoughts are very relevant and well-thought-out.
Folks like me that have to be both the developer and marketer though, have to be sensitive to both concerns.
"Way cool" means different things to different people. I don't mean window dressing, but well-thought-out intuitive placement, coloring, and response of UI elements, that help the user do the job as easily as possible. For example, one of the things I have in most windows is built-in help in a collapsible panel. To me, not wow but ease of use is "way cool". However, I did get the head of one IT dept the other day say "wow" when she saw one of my screens. That made me feel pretty good...
I'm sure you don't mean that anything that looks good is a waste of system resources. I conclude that you must be referring to color schemes that look cool to the teeny-boppers, being dark grey with orange text and animations and so on that would tend to use processor time for little other than amusement to the developer.
Hey, this IS starting to sound like a soapbox rant, isn't it!! I'll shut up now.
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BobishKindaGuy wrote: I don't mean window dressing, but well-thought-out intuitive placement, coloring, and response of UI elements, that help the user do the job as easily as possible.
That's it
BobishKindaGuy wrote: For example, one of the things I have in most windows is built-in help in a collapsible panel. To me, not wow but ease of use is "way cool". However, I did get the head of one IT dept the other day say "wow" when she saw one of my screens. That made me feel pretty good...
Hehe, that's a very cool reaction to receive! And yes, an application with a well-designed UI usually stands out. Heavy drinkers should be able to recognize a good wine
BobishKindaGuy wrote: I'm sure you don't mean that anything that looks good is a waste of system resources. I conclude that you must be referring to color schemes that look cool to the teeny-boppers, being dark grey with orange text and animations and so on that would tend to use processor time for little other than amusement to the developer.
Your conclusion is almost correct, the colorscheme had a gradient lightblue instead of dark gray.
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You are way cool
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The discussion is now going beyond the original subject( best way to convert desktop app to web app)...
So, The bottom line (about original subject) is
"We haven't been there yet!"
Is that right?
I think Webmatrix is good to apply. Not sure that it's sufficent to apply.
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Thanks JongchanAhn,
I haven't seen any answer yet that seems irrelevant to me, though. And what you say - "We haven't been there yet" is partially true, since we don't have anything yet that works like - say - a phone, where you pick it up and get a dialtone. But what I needed here is exactly what I'm getting - ideas for working toward the goal now instead of waiting for the day when things are as easy as a phone. What do you think - does that sound reasonable?
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A well developed .NET desktop app should be easily ported to ASP.NET. You do however want to analyze the server requirements and the load that it may encounter. If it's a calculation intensive application (ie: Scientific, 3D graphics, etc) then it may be better as a desktop app.
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