Question

i’m implementing bulltain board(or forums) for my website and i’m using MVP pattern in c# and asp.net along with a typed dataset to connect to the database. my problem is that i’m not sure where should i handle the possible errors and validate the incoming/outgoing data. i came up with two different solution:

solution 1:

view: do nothing just pass the data to presenter

presenter: validation and error handling related to model, database and the view

model: do nothing just return data or error from database

solution 2:

view: validation and error handling related to pages and user inputs

presenter: do nothing just be the mediator

model: validation and error handling related to database and model`

so which solution is a better approach??

Answer 1

I woulds personally stand for second solution for

view: validation and error handling related to pages and user inputs

this. As it’s important for simple (f.e typing errors) give the user immediate feedback, not making him wait for response from the model.