An ORM built by Microsoft and is available as part of .Net framework 3.5 and later.
1
vote
2answers
45 views
Is it faster to query using linq-to-entities or a data adapter?
I'm creating an MVC application in VS2012 and I reverse-engineered the models from existing Oracle tables. The tables are part of a MASSIVE database. Besides the main tables that I need to insert, ...
-1
votes
2answers
43 views
Managing Order state [closed]
I'm working on an big project in alloy steel industry that has some modules:
Sale
Planning
Production
Shipment
...
All works are based on Orders. So, Order is an important class in my project and ...
0
votes
1answer
60 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
58 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 { ...
-2
votes
0answers
52 views
Foreign key validation in Model [on hold]
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
141 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:
...
1
vote
1answer
103 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
34 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
106 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
178 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
100 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
303 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
161 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
220 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
182 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
223 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
145 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
287 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
213 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
582 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
94 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
222 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
269 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
179 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
567 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
714 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
228 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
227 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
110 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
442 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
140 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
462 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
153 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
299 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
442 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
210 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
464 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
836 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
494 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 ...
