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Posts Tagged ‘Three Tiered’

ASP.NET MVC – Model != BLL or DAL

Last week I introduced the ASP.NET MVC framework by talking a bit about what the model, view and controller are.

In the comments, John Meyer said,

I respectfully disagree with your claim that the model is you BLL. MVC is a UI layer pattern, and as such all models, views, and controllers are strictly in the UI level.

While historically, MVC has been described in the way I stated–while the ASP.NET MVC guys have also portrayed the Model as BLL or below–I have to agree with John.  Here’s why:

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ASP.NET Three Tiered w/ Client Side Data

G07L0077 Last week, I created a tool that would allow the user to upload an XML file and have the web site process the file and return a report. All pretty standard stuff until you realize that if you want to use a three-tiered model you have to get the data that the client uploaded into a place that the Business Logic Layer (ObjectDataSource in this case) can see EACH time the object is instantiated.

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