The ADO.NET Entity Framework is a set of ORM (Object-Relational-Mapping) tools for the .NET Framework, since version 3.5 SP1.

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3
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1answer
65 views

Entity Framework query optimization

A user can track a show, and mark episodes and seasons of that show as watched. To support this I have the models below: Models ...
0
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0answers
45 views

Class Modeling: Multiple Person, only two user system

In my hospital system have Patients Professionals = medical, secretary, hospital staff Suppliers = product suppliers Companies = heath plan, others Among the four, only two can access the system: ...
7
votes
1answer
88 views

GET with paging, sorting and filtering

I have a GET method that handles paging, filtering, and sorting. Development has been fairly rapid and I'm not completely sold on some of the implementation. A few assumptions have to be made for this ...
1
vote
3answers
204 views

ASP.NET Product Listing

I am working on a e-shop in ASP.NET MVC, and I just made the listing of product the way I figured out this night. Is it correct? Or should I make it differently? How? So this is my Product controller,...
2
votes
1answer
86 views

Select query helper for nolock and no change tracking

I often need to switch connection strings and databases (dev/prod) and I need to be able to execute queries with the NOLOCK flag. For this purpose I create a few ...
3
votes
3answers
210 views

Improving time it takes to insert thousands of records using Entity Framework

I have a task in my program that is inserting thousands (94,953 in one instance and 6,930 in another) of records into my database using Entity Framework. Right now I am doing this and calling the <...
3
votes
1answer
110 views

Retrieving collections from a database

I have two collections that I want to retrieve from the database and associate with each other. My solution works, however I know it isn't the most elegant one. Do you have any suggestions on how to ...
0
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0answers
41 views

Simple repository for a small/medium sized asp.net mvc site. Using entity framework

I am about to start a small/medium sized project. I am by no means a software architect. But i tend to question every move i make at times. Since i want to do things correct. I found a way to ...
2
votes
1answer
31 views

Need to get rid of .Any() to calculate the .Sum() in Linq-to-Sql

I have the following code where I need to execute 2 linq-to-sql statement. If I do not have the Any() in the if statement, then ...
3
votes
0answers
51 views

Optimising looping through large data set and updating database

I have a database table storing information about documents (MigrationMaster). There is another table with security information on these (DocumentSecurity). There are 4 steps I can see that I need to ...
3
votes
1answer
228 views

WPF/MVVM with Entity Framework, Repository and Unit of Work pattern

I'm building WPF/MVVM application and I'm struggling implementing Unit of work pattern. The part, about which I'm not sure is UnitOfWork class. Here is my thought: ...
3
votes
0answers
84 views

WebAPI Authentication

Do you see any security issues with this authentication approach or have any suggestions? WebAPI is REST-based. The user logs in by calling the Authentication Controller and expects a 401 if ...
2
votes
2answers
130 views

Take a result set and organize it into a dictionary

I'm trying to take a result set and organize it into a dictionary then assign the dictionary values to variables that are publicly accessible from my controller. My issue is I have to check if there ...
1
vote
1answer
23 views

Mapping discussion entries from an SQL-View to objects

In my ASP.NET MVC application, I am loading Discussion Entry records along with User info (who posted the entry), Badges (assigned to the entry), Reactions (made to the entry like Facebook-style ...
3
votes
2answers
179 views

Sales order domain model with Entity Framework

I am wondering whether the following inheritance pattern is a good idea. I noticed that Sales Orders, Sales Quotes and Sales Invoices all follow a similar Master/ Detail pattern ( i.e a Header with ...
3
votes
1answer
246 views

Cloning Entity Framework entities

I'm currently writting piece of logic which copies entities from one user account to another. My current strategy in doing this is like that: Consider the following code: ...
0
votes
1answer
77 views

UnitOfWork without repository and transaction

I've created the unitofwork class below: ...
0
votes
1answer
85 views

Web API with IoC and database integration tests [closed]

I've made integration tests for a major part of my application. I test my dependency injection is set up correctly, creating controllers with it's dependencies going all the way to the database (using ...
2
votes
1answer
69 views

API controller with database queries

I have the following controller with a couple of database queries and I'd like you to review it. I've tried to make it clean for other developers but the communication with the database can be ...
2
votes
0answers
47 views

First time using entity framework with simple repository

I'm working on updating a GitHub project that I use at work, but I think the person abandoned the project as there is a pull request for it since 2014. At work we use a Repository pattern with ...
0
votes
1answer
86 views

Data layer using extension methods

I've started to use extension methods to provide data layer functionality in our project. Our project is an MVC website using Code First Entity Framework. So, I've done things like this: ...
1
vote
1answer
51 views

Passing model to _layout.cshtml

I have login page that looks like: It has a ViewModelBase and a ViewModel as: ...
2
votes
1answer
138 views

Repository pattern for books in EF6

I am working on a generic repository. And I wondered if anyone could give some feedback on it. Interface for DbContext: ...
1
vote
2answers
73 views

Inserting a (IoT) device into a database

In Service.Insert(), I call DeviceRepo.Insert() and in Service.Update(), I call ...
2
votes
1answer
186 views

Repository Pattern universal application

When I started learning Repository Pattern with Unity few days ago I was under impression that the main benefit of this pattern is the separation of data layer from the business layer. In other words,...
0
votes
1answer
64 views

Using EF 6.1 for updating objects and their children

I have an application that allows a user to create a poll that includes questions and answer choices as part of the poll. The hierarchy is a poll has one or more questions, a question has one or more ...
1
vote
1answer
78 views

Web-service for wiki-like movie database

I'm making a web-service for an app with a (partially) crowdsourced movie database. These two functions allows users to add and remove which genres a movie is liked to, and get the log of whom have ...
2
votes
1answer
51 views

Building a simple REST service using Web API 1.0

Friends, It's been several years since I last worked with the ASP.NET Web API framework. Even then I had developed with it minimally. I have a requirement for a service that will allow for the ...
3
votes
2answers
116 views

Building expression tree with multiple OrElse

I am creating a way for users to filter results based on start and end values. An example of this would be: ...
2
votes
1answer
49 views

Edit one table from another table in a Windows Form DataGridView

I have a Sales Order Program that allows each customer to have their own Part Number for one of our Stock Items. The Customer Part Numbers are stored in a separate table. I need to make this as low ...
1
vote
1answer
80 views

Domain Model for Simple Yes/No

Working from a C# and EntityFramework background. Jimmy Bogard makes the point of modelling your domain model correctly, such ...
2
votes
1answer
71 views

Optimize OrderBy Generic Method

Here is my OrderBy method which includes concatenated column names. Can this be achieved more efficiently? ...
1
vote
1answer
283 views

DAL basic implementation using Entity framework 6 and Autofac

Would like to ask for a code review for my DAL. I use Entity framework 6 and Autofac for ...
-1
votes
1answer
41 views

LINQ to SQL code - in models project or in db project

I currently have two projects. One called Models, a second called TaskEntityModels, a model first ...
5
votes
1answer
87 views

Paginating blog posts from SQL server using nested LINQ statements

I made an ASP.NET MVC application using Entity Framework for code-first migrations to the SQL Server database. I also use Unity (DI/IoC) for managing the services and repositories. I made an overview ...
0
votes
1answer
147 views

Method or helper function to return objects from EntityFramework with Linq [closed]

The following code reads from Microsoft EntityFramework 6.0 domain model and returns the single view_patient object. The view_patient object is defined in the backend database and uploaded to the ....
2
votes
1answer
79 views

Return most recent DateTime C# Entity Framework

Job -> Many Quotes Quote -> EmailLogList EmailLogList -> Many EmailLogs I want to return a CreatedDate from an EmailLog which has been created most ...
0
votes
1answer
76 views

Entity Database Add/Update method

What would be the most elegant way to refactor the following method? ...
1
vote
1answer
49 views

Eager Loading Deeply into a Model with a Collection Property Whose Type is Inherited

Visual Studio generated this great route for me, where I can load an entity: ...
1
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0answers
48 views

Get a list of inherited classes using Linq to Entities

I have inherited classes in Entity Framework. I have a base class (ArticleBase) and two classes Review and Article which inherit from it. I am returning a list of the latest Articles and Reviews ...
1
vote
2answers
105 views

Entity framework - code first data access

I'm looking for your opinions about ways to improve the access to data in my application. I develop web applications, using Entity Framework 6 code first, and Autofac for dependency injection. Before ...
2
votes
2answers
95 views

Medical appointment book history

This code correctly returns a View_appointment. Is there a better way to accomplish this with using left joins and unions? I'm trying to learn Linq a little bit ...
4
votes
1answer
66 views

EF IQueryable Extension Methods

I've started building extension methods for my EF classes like below because it makes building queries so easy, and the intellisense provided helps keep people from writing a new Where() clause in ...
2
votes
1answer
112 views

Custom data validation approach for store items and prices

I came up with a validation design for my project and wanted to hear if there's anything I could improve. Here's how it works. I have the models (code first) ...
-1
votes
1answer
53 views

EF Code First BaseContext-class [closed]

I've seen a tutorial where a dbcontext base class is created like so: ...
3
votes
1answer
197 views

Utilizing Areas to handle subdomains with shared state/resources

I am currently working on a side-project and have the basic foundation and architecture I want in place for the site. I wanted to get your opinion and thoughts on my current practices and methods ...
4
votes
1answer
91 views

Joining tables with EF

Here is my database: Here is my viewModel: ...
8
votes
2answers
95 views

Code First approach, feeding the table

I have a database (PostgreSQL) from which I want to migrate some data to a MS SQL Server database. I decided to use a code first approach. The question is related to the proper way of feeding my new ...
5
votes
2answers
352 views

Query Builder pattern with use of FluentApi

Recently, I've come up with an idea of building a custom query builder combine with FluentApi. Expected usage: ...
3
votes
1answer
68 views

Entity Framework Code First Softball Stats Database Schema

I am creating a website for my buddies and I to track all of our offensive softball stats. I am getting tired of maintaining a huge excel spreadsheet and emailing it out every week, so a website is ...