ASP.NET MVC2 Apps - Extending App

Here is my problem for using mvc2, I cant find a silver bullet fix for this.

I have a standard mvc app which has following views, controllers and Models

View WorkOrders Estimates

Model WorkOrder Estimate开发者_如何转开发

Controller WorkOrderController EstimateController

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I recently got a client who wants this app with little customization. I am still adding new modules to this app so I dont want to clone my app and customize because then I have to maintain two code bases. Upgrading any modules in base app as well as app that I cloned.

So here is how my Client App will look like

View ClientWorkOrders Estimates

Model WorkOrder Estimate

Controller ClientWorkOrderController EstimateController

Now If I want to add invoice I have to add it at both apps. Any easier way to handle this in microsoft mvc.

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Without knowing much about the application -- you could turn to the provider model (depending how much additional functionality they need) or you could implement a plugin framework. Both options could be a huge architecture change.

I've never used it, but the MEF framework was specifically designed for creating plugin architectures.