Suggestions/Recommendations for a Web Application with Sub-Apps

Suggestions/Recommendations for a Web Application with Sub-Apps

I’m starting to think about and develop an architecture for a big web application, and I wanted to get suggestions and/or recommendations on which technologies and/or frameworks to use.

The application will be an Intranet-based web site using Windows authentication, running on IIS and using ASP.NET. It’ll need to be structured as a main web application with sub-web applications. Essentially, the entire scope is a composite browser-based, Intranet application that is composed of discrete, functionally complete modules or sub-applications.

This composite web client application would have a main or shell module to provide the overall user interface structure. Additionally, the shell module would provide access to common services that all the individual sub-apps or modules could use. Then each sub-app/module would contain its own functionality and implementation, but integrate with the shell user interface.

Next, based on the user and which of the sub-apps are available, the main or shell app would dynamically build tabs (or buttons or something) as a way to access each individual application. And, we’ll be storing the user and application data in a database table.

So, for example, we’re going to have a reports application, a display application, and probably a couple other distinct applications. On startup of the main/shell application, after determining who the user is, the main app will query the database to determine which sub-apps the user can use and build out the UI. Then the user can navigate between available sub-apps and do their work in each.

I hope all this makes sense.

Anyway, I’m wondering which, if any, pre-existing technologies/frameworks would work best for architecting and developing a system such as this.

Would the Web Client Software Factory be a good choice? Would some other MVP solution be a good choice? Would ASP.NET MVC be a good choice? Something else???? Would none of these be a good choice and we should just develop everything from the ground up using web forms? Any other info I should know about?


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Before discussing frameworks, some points to consider when building such a system (where sub-apps can be plugged in): .
  • Possible integration points (Data, Services, Business Logic, UI)
  • Cross-cutting concerns (system logging, audit logging, config, security)
  • Who'll be developing the sub-apps (you, people that work in your office, or anyone / the greater community)
I think that before leaping in and building a framework (or choosing an existing one) you need to step back and think through these aspects first.. In terms of farmeworks: you'll find many frameworks but very few offer the full range of what you're after:.
  • ASP.NET WebForms is basically a completely vacant parcel of land - you'll have to build most things yourself, or bring in additional frameworks (such as the MS Enterprise Libraries)
  • ASP.NET MVC is effectively the same thing but in a different style.
Neither of these are "frameworks" but you could use either of these as the low-level base 'platform'..
  • The MS Ent Libs are great for cross-cutting concerns (like data access, logging, etc) but that's all.
  • There's also a range of good Dependency Inversion frameworks but again these aren't a full solution.
The big thing is to control dependencies: ensure you abstract out the data layer (for a start), adhere to principles around interface segregation, reuse and so on.. One option that you could consider (and I'm blowing my own trumpet here - so I'm not impartial) is the open source .net application framework I've built ('Morphfolia' it's taken me about 5 years, part-time).

Even if you don't use it you might find some good ideas or code you can 'steal':. Morphfolia:. It's available for download at

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