An ORM built by Microsoft and is available as part of .Net framework 3.5 and later.

learn more… | top users | synonyms

0
votes
1answer
52 views

I recently read about unit of work and repository design patterns; working with EF wondering if this is a good design pattern

I found myself creating child records that require a master record to exist, first, so that they can reference it by the master record's primary key (if that's the right term). To accomplish this ...
1
vote
1answer
50 views

How far can I drift from my original domain model and still have the benefits of an ORM?

I have the following domain models: public class User { public int Id { get; set; } public ICollection<Product> Products { get; set; } } public class Product { public int Id { ...
-1
votes
0answers
47 views

Foreign key validation in Model

I'm proposing you a question posted at Stack Overflow but that in my opinion deserves to stay here because it concerns the conceptual world of programming, independently of the technology used to ...
0
votes
0answers
13 views

Deep loading data with EF6 and LINQ [migrated]

I am implementing an ASP.NET MVC 5 web app using ASP.NET Identity 2 and Troy Goode's PagedList. I need to display UserRole data in the following format in a JqGrid: User Name | Role Name This ...
0
votes
1answer
103 views

Confused on how to properly employ a Repository Pattern with Service/Business Layer on top

I'm building a ASP.NET Web Api 2 solution for learning purposes, and I've hit a snag. I was wondering if anyone could tell me what exactly it is that I'm missing. My Web Api solution has 4 Layers: ...
0
votes
0answers
11 views

Dynamic Data won't display calculated fields; ASP.NET 4.5, Entity Framework 5.0 [migrated]

I'm trying to display calculated fields in my Dynamic Data Entities site. I have generated my EDMX file from an existing database, and have added customizations in a separate file using partial ...
1
vote
1answer
69 views

Repository Pattern: Doctrine2 vs Microsoft Entity Framework?

I have been using Symfony2 with Doctrine2 for some years. I have recently started using Microsoft's Entity Framework with MVC5. From my Symfony2 experience I understand that a repository's job is only ...
1
vote
0answers
33 views

Is it improper to have an application wide source for dropdown binding

The WPF Combobox needs to bind a collection to it's ItemsSource and something to bind the selected item or value to. Until now, I've included both the collection and the selected value properties that ...
0
votes
1answer
102 views

Entity Framework 6 Conventions

I use the Entity Framework often, but I have one area of confusion I would like to understand better. If I wanted to have a navigation property in an Entity such as public virtual ExampleObject ...
0
votes
0answers
173 views

What's the best way to expose a Model object in a ViewModel?

In a WPF MVVM application, I exposed my model object into my viewModel by creating an instance of Model class (which cause dependency) into ViewModel. Instead of creating separate VM properties, I ...
3
votes
1answer
92 views

Why DbContext object shouldn't be referred in Service Layer?

I've been looking for some implementations of Service Layer and Controller interaction in blogs and in some open source projects. All of them seem to refer DbContext object in repository classes but ...
1
vote
2answers
299 views

Correct way to inject dependencies in Business logic service?

Currently the structure of my application is as below Web App --> WCF Service (just a facade) --> Business Logic Services --> Repository -> Entity Framework Datacontext Now each of my Business logic ...
0
votes
1answer
152 views

In what situation do Entity Framework enums become useful?

I am working on a project where there will be plenty of static options being stored in the database. I looked at using Enums for this, but do not see how they could be useful. They do not create any ...
1
vote
1answer
196 views

entity framework 6 agnostic enough different sql server and OS platforms?

It's my first time using sql server, I usually go with MySQL, so I'm unsure how to do this. The project I'm assigned will be deployed to multiple platforms particularly PC's with different SQL server ...
0
votes
1answer
163 views

Claim based authorization for application framework? [closed]

I am developing a framework that makes common data management tasks easier for a couple of future applications built on top of it, including document management, data versioning, retention, locking ...
1
vote
0answers
213 views

Entity Framework - Loading Related Entities Explicitly

I have been using Entity Framework for a few years. I have flip-flopped between calling out to repositories in my business logic or using lazy loading to retrieve data as I work my way through the ...
-3
votes
1answer
131 views

Entity/Collection change tracking by DbContext [closed]

Can someone explain me how entity changes and entity collection changes are tracked by DbContext in Entity Framework 6 where entities are POCO type (not derived from EntityObject)? I experimented with ...
2
votes
5answers
286 views

Create Database To Fit Data vs Make Data Fit The Database

I'm newish to programming and would like to know what people have found to be the most supportable option or rather what people find more understandable. I'm the only one writing code at my firm, but ...
2
votes
4answers
212 views

At what point does data access\manipulation logic becomes business logic?

Consider a service which updates PersonDetail tables in database. I am Using EF which maps the table to this Entity. When a record is updated, it is not actually updated but a new record is created ...
0
votes
2answers
562 views

How to connect mvc application using entityframework or ado.net?

I am an ASP.NET developer. I want to learn ASP.NET MVC. In fact I am learning it. But Now I am confused at a point. How can I connect my database to my application. Using entity framework or linq or ...
0
votes
0answers
89 views

How to handle field level Acces Security when using Entity Framework

Scenario: a large existing system (~300 tables, 500 stored procs, 200 views and a code base of several 100k lines) with most security level stuff in stored procedures needs to be refactored (for ...
2
votes
1answer
217 views

Would this be a correct way to use the Repository pattern in ASP .NET MVC application implementing Entity Framework?

This ASP .NET MVC application implements Entity Framework. I've declared the repositories in the DbContext like this: public class CompanyDbContext : DbContext { // constructor goes here ...
4
votes
4answers
2k views

How to get around the Circular Reference issue with JSON and Entity

I have been experimenting with creating a website that leverages MVC with JSON for my presentation layer and Entity framework for data model/database. My Issue comes into play with serializing my ...
1
vote
1answer
257 views

How to use Git with ASP MVC Code-First Entity Framework [closed]

TLDR: What is an effective way to use Git to handle ASP MVC code-first EF? Which files need to be included for NuGet? Which files should be left out? We have an ASP MVC code-first Entity Framework ...
1
vote
3answers
177 views

Should entities be accessible from all layers of an application? [closed]

I am googling this issue now for weeks, but cannot find a good discussion. It boils down to this: As POCO entities used in a dbContext are in fact a definition of the database, shouldn't they be ...
0
votes
0answers
52 views

IUserType like feature inEntity Framework

I'm working on a new project, we want to build a new, modern, application working with our legacy data sources, and especially, legacy databases. We want to use an ORM and we want advanced features so ...
2
votes
1answer
554 views

How to split up ASP MVC Project using Code-First Entity Framework

For an academic exercise, we have been tasked with creating a small website. We have already gathered the requirements and fleshed out the business domain to see the classes we are supposed to ...
1
vote
1answer
682 views

What are the disconnected scenarios in Entity Framework?

I'm not sure I understand what all fall under the disconnected context scenarios in EF (See this and this). This link says use Web API or WCF services to avoid the complexities of disconnected tier EF ...
0
votes
2answers
225 views

How do I read the Entity Framework Model and validate it against a given connection?

I have a Entity Framework Database First Model. I want to write a MSTest/nUnit test to verify that all the stored procs, tables and views that are defined in my edmx model are still valid on the ...
1
vote
1answer
219 views

How do I architect zip code & distance calculation functionality?

I am building an app using MVC 4/Razor and EF 4/ .NET 4 in which it is possible to search items by zip code and thus retrieving items only a certain distance from your current zip code. I have a class ...
0
votes
1answer
109 views

Inheritance with Entity Framework Code First

I'm starting work on a new personal project and I'm looking to get advice in regards to setting up my classes. My base class is a User. The User class will have the following general properties ...
1
vote
2answers
114 views

Should db be mapped directly to the UI or should there be multiple layers of enties/models with mappings to/from each?

I would like to know arguments for/against this concept. Technologies in use from the bottom up: MSSQL 2012 DB (exclusively accessed via sprocs) Entity Framework WCF Web Service ASP.NET Webforms ...
1
vote
2answers
432 views

What is right choice of Data Access Layer for large application

I am using Singleton pattern for my application, I have used ADO.NET Entity framework as my Data Access Layer, after login to my application, it's taking 3 to 5 minutes to load the dashboard. Is ...
1
vote
1answer
2k views

DbFirst vs Code First? what should I use if I rely on Stored procedures

This question is asked many times, and I always prefer code-first as I like to keep the logic in code. But now I have a challenge to load screen under 5 seconds and very little time to do things. I ...
9
votes
3answers
1k views

Entity Framework Entities - Some Data From Web Service - Best Architecture?

We are currently using Entity Framework as an ORM across a few web applications, and until now, it has suited us well as all our data is stored in a single database. We are using the repository ...
0
votes
1answer
136 views

Are there any concerns with using a static read-only unit of work so that it behaves like a cache?

Related question: How do I cache data that rarely changes? I'm making an ASP.NET MVC4 application. On every request the security details about the user will need to be checked with the ...
2
votes
3answers
2k views

How do I cache data that rarely changes?

In my ASP.NET application there is some data that doesn't change often and so there is no point in querying the database to re-check it every time. In my current situation I am checking user ...
1
vote
1answer
460 views

Entity framework and Eager loading and enterprise application with DDD aproach

We are trying to create an ASP.NET MVC 4 application using entity framework with domain driven development style pattern approach. As you can see in our part of domain layer, we have a complex design. ...
0
votes
0answers
150 views

Entity framework separating entities for product and customer specific implementation

I am designing an application with intention into making it a product line. I would like to extend the functionality across all layers and first struggle is with domain models. For example, core ...
1
vote
2answers
1k views

Design pattern for an ASP.NET project using Entity Framework

I'm building a website in ASP.NET (Web Forms) on top of an engine with business rules (which basically resides in a separate DLL), connected to a database mapped with Entity Framework (in a 3rd, ...
0
votes
1answer
3k views

Entity Framework 5, separating business logic from model - Repository?

I am working on my first public-facing web application and I’m using MVC 4 for the presentation layer and EF 5 for the DAL. The database structure is locked, and there are moderate differences ...
4
votes
3answers
297 views

Architecting multi-model multi-DB ASP.NET MVC solution

I have an ASP.NET MVC 4 solution that I'm putting together, leveraging IoC and the repository pattern using Entity Framework 5. I have a new requirement to be able to pull data from a second database ...
7
votes
3answers
6k views

What the best way to wire up Entity Framework database context (model) to ViewModel in MVVM WPF?

As in the question above: What the best way to wire up Entity Framework database model (context) to viewModel in MVVM (WPF)? I am learning MVVM pattern in WPF, alot of examples shows how to implement ...
1
vote
2answers
438 views

Entity Framework and distributed Systems

I need some help or maybe only a hint for the right direction. I've got a system that is separated into two applications. An existing VB.NET desktop client using Entity Framework 5 with code first ...
3
votes
2answers
209 views

Entity Framework and distributed Systems

I need some help or maybe only a hint for the right direction. I've got a system that is sperated into two applications. An existing VB.NET desktop client using Entity Framework 5 with code first ...
4
votes
2answers
459 views

Domain Logic in Service Layer exposed as WCF service

I am designing an enterprise solution which consists of modularized products within a product range using Entity Framework code first to define the domain model and provide the data access. e.g. ...
1
vote
1answer
125 views

Is it feasible to change model relationship mappings and properties in Entity Framework CodeFirst at runtime?

Here's the situation. I have an enterprise application that uses EF Codefirst to map POCOs to an existing database. This has been working fine so far. In fact I would say that it's been working really ...
0
votes
2answers
825 views

Entity Framework designer not effective anymore

At my current workplace, Entity Framework 5 is used for all data access/manipulation. It is a database-first approach using the model designer to add/edit/delete/update entities. Problem We now ...
3
votes
2answers
480 views

Sql Server Data Tools & Entity Framework - is there any synergy here?

Coming out of a project using Linq2Sql, I suspect that the next (bigger) one might push me into the arms of Entity Framework. I've done some reading-up on the subject, but what I haven't managed to ...
7
votes
3answers
764 views

Architecturally speaking, does a database abstraction layer, such as Microsoft's Entity Framework, void the need for a separate Data Access Layer?

The way it was For years, I have organized my software solutions as such: Data Access Layer (DAL) to abstract the business of accessing data Business Logic Layer (BLL) to apply business rules to ...