I have this layers in my application: Entities Database (with Entities reference) Business (with database and Entities references) User Interface (with Business and Entities references) Here is an example of my codes: UserDAL class in database layer: public class UsersDal { databaseDataContext db; public UsersDal() ...
Hi - I'm working on a unique windows desktop application that requires both a standalone and distributed deployment mode. In standalone mode the entire program will run on a single desktop machine. In distributed mode there will be several thin clients running on desktop machines that will communicate with an app server (IIS) and databa...
Hello, This site has provided me with many useful answers, however after a hours search I haven't found anything that specifically answers my needs. So here goes... The company I'm working for is in the process of designing a new Business Objects Layer and a Data Access Layer - these will reside in separate assemblies. The problem is...
Folks, I have an ASP.NET project which is pretty n-tier, by namespace, but I need to separate into three projects: Data Layer, Middle Tier and Front End. I am doing this because... A) It seems the right thing to do, and B) I am having all sorts of problems running unit tests for ASP.NET hosted assemblies. Anyway, my question is, w...
I have been practicing DDD for a while now with the 4 distinct layers: Domain, Presentation, Application, and Infrastructure. Recently, I introduced a friend of mine to the DDD concept and he thought it introduced an unnecessary layer of complexity (specifically targeting interfaces and IoC). Usually, its at this point, I explain the b...
When working with 5-tier architecture (front-end => interface tier => business tier => database tier => database) using WCF service as the interface tier, having the client applications calling it's methods, should I use also WCF service for the business and database tiers? I ask because of all the serialization / deserialization that wi...
Hy everyone. In c# .net VS 2008 I'm developing an N-tier CRM framework solution and when it's done I want to share it. The architecture is based on: Data Access Layer, Entity Framework, Bussines Logic Layer, WCF and finally the presentation layer (win forms). Somewhere I had read, that more than 2 tier layers are problematic, beacus...
Hello, Similar questions have been asked before but not quite the same (unless I missed it) I want to pass IUserInfo class instance through my Service, Domain , Domain Events, Domain Event Handlers... Whats is the best way to do it. Should I Inject it using IoC by registering it against instance of Httpcontext.Current.session["Cu...
I need to accomplish the following (this is a simplified version): enum Animals{ enum Cats{tabby("some value"), siamese("some value")}, enum Dogs{poodle("some value"), dachsund("some value")}, enum Birds{canary("some value"), parrot("some value")} private String someValue = ""; private ShopByCategory(String someValue) { th...
Our UI exposes user input as strings. All of them, including dates and numbers, are coming as strings. The question is: is it better to convert these to the appropriate type (datetime, int, etc) in the UI (and then pass converted var to the BLL methods), or in the BLL itself? ...
We're in the analysis/early design phase of a future Swing application where persistance is provided by a database (probably an alternative between Oracle and mySql depending on the customer's money). Basically, the application will feature two kinds of modules : One "admin" subsystem to feed and maintain a set of referential data ; X...
Hello community. I'm working For my company on a .NET N-tier architecture and have several questions. Basics: the project should be split into layers and should not allow tues develop as easy as possible additional modules for modules like logging, ratings, user management etc. Environment: VS2010, EF4, SQL Server 2008, LinqToSql, c# ...