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POView Model Patterns and usage in ASP.NET MVC3 (Also, using EF 4.1)
 

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    <p>I have been searching for an answer to this question for days and it is driving me insane. Currently I am working on a project using ASP.NET MVC 3 and am trying to utilize a ViewModel per controller approach as has been suggested by so many articles and tutorials I have checked out. To better illistrate what I am asking I will outline below:</p> <p>Lets say I have a pretty simple and straight forward model. Users, Customers, Addresses, Phone Numbers, Orders, Products, Categories, etc... When a user registers for a new account on my site I would like to: 1) create an account for them (this is just an account id, customer type) 2) Add their customer demographic data to Customers 3) Add N-addresses and address types 4) Add N-phone numbers with type as well.</p> <p>As far as I have got is deciding that I need a RegisterCustomerForRegistrationControllerViewModel. My predicament is what does this model look like? I am trying to be as DRY as possible yet when implementing this pattern I seem to repeat myself at each turn. At what level do I put DataAnnotations for validation? So do I simply new up a new Customer() even if I only want to use one property from the class in a given ViewModel?</p> <p>I'm not even confident at this point that this is a correct assumption. There seems to be so much opinion on the topic yet so few concrete examples of implementation. I am hoping someone can point me in the right direction and maybe present some code snippets along the way... I hope this is all clear enough and if not please feel free to ask follow up questions.</p> <p>Again, Thanks in advance!</p>
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