Database First with EF7 in a Universal App

Solutions with one EF6 model (db first) and one code first

I have a solution that has multiple databases. We are using EF6....We have one Project that is EF6 (code first), and one project that is EF6 DB first....var arkleModelDbFist = new Arkle.DAL.EF.ArkleEntities(); var CustomerOld= new Arkle.DAL.EF.Customer(); arkleModelDbFist.Customers.Add(CustomerOld); // Errors on this line arkleModelDbFist.SaveChang...

EF7 One to One relationships

I'm currently working on getting a handle on the new EF7 and I am running into an odd behaviour when dealing with one to one relationships. ...I have the following models...public class Material { [Key] [Required] [Column(TypeName = "bigint")] public long Id { get; set; } [Required] [MaxLength(128)] public string Name {...

Database-first EF7-beta7 dnx ef dbcontext scaffold command fails

In an asp.net 5 beta 7 project no matter how the command is written I get an unrecognized argument trying to scaffold the dbcontext from an existing db:...C:\Dev\Project>dnx ef dbcontext scaffold provider EntityFramework.SqlServer connection "Data Source=(localdb)\MSSQLLocalDB;Initial Catalog=ubercrew_relation;Integrated Security=True" ...I've...

EF7 (Code First) + SQLite doesn't create a database and the tables for the models

Im currently trying to recreate the example, done in the documentation ...http://ef.readthedocs.org/en/latest/getting-started/uwp.html... , using EF7 and SQLite to create a Universal Windows Platform app....I've installed the required EF7 and EF7 Commands package, and created the model and context:... public class BloggingContext : DbContext { ...

Mapping One-to-Zero-or-One with EF7

I am currently in the process of cleaning up a fairly large database. Part of the database has a relationship which is a one-to-zero-or-one mapping. Specifically:...User -> UserSettings ...Not all users will have user settings, but a user setting cannot exist without the user. Unfortunately, the tables already exist. ...User... has an PK ID. ...Use...

EF7 RC2 Code First Create Database

I'm using EF7 RC2 in my ASP.NET core RC2 application and I'm trying to generate my db from code (I'm using code first). I created my context, and setup my connection string, but when I enter "Add-Migration" in the NuGet console in VS2015, I get an error saying ...The term 'Add-Migration' is not recognized as the name of a cmdlet, function, script ...

Entity framework Core - Ambiguity over choosing Code First Approach and Database First Approach

Choosing the Code First approach or the Database First approach with ...Entity Framework Core... for my case is looking confusing from best approach point of view....I have an existing database with some complex stored procedures. ...If I choose the Database First approach, will it be good from performance point of view?...If I choose the Code Firs...

What is the difference between EF Core Database-First and EF Core Code-First approaches?

I was wondering... since there is no EDMX in EF Core, what is the difference between those 2? And if the major difference would be the possibility to change the database tables, why not use code first then use EF code-first migrations?

First call of dbcontext freezes an app after each app reboot

We have a test WPF application (.NET Core 3.0) with only one button in center of the screen. The button have a click event and a method for its processing:...private async void CreateUsers(object sender, RoutedEventArgs e) { using (var context = new AsyncDbContext()) { await context.Users.AddRangeAsync(new List<User>...

How to implement Entity Framework Core 3.1.2 with Firebird database using 'database first approach'

I am currently developing a .NET Core 3.1 Web API which should communicate with a Firebird database (storing/retrieving data). I would like to handle that communication using ...Microsoft.EntityFrameworkCore... 3.1.2. Entity Framework is completely new for me so excuse me if this question is too simple. But I couldn't find the answer online....Beca...