Entity Framework 5 - Database First
Why Stack Overflow recommends it
Stack Overflow users link it when they need a concrete walkthrough of creating an EDMX model and DbContext from an existing database in Entity Framework.
Recommended by 1 people across 1 different months, 2013 to 2016.
What it is
A roughly ten minute screencast from the Coffee Cup Dev channel that introduces the database-first workflow in Entity Framework 5. It walks through adding an ADO.NET Entity Data Model to a .NET project and generating model classes from an existing database.
What people said
Recommends A D · 2016-01 · Stack Overflow · on “asp.net app connects to localDB instead of my remote DB”
Into a brand new ASP.NET project, I included an ADO.NET entity data model and selected database first. Same procedure as this guy : [this video] (2min17).
Cites TMan · 2013-12 · Stack Overflow · on “Add data to database using MVVM pattern”
I highly recommend you use a ORM like Entity Framework ( EF ) using database-first since you've already created a database. Entity Framework will create your POCOs (model classes, Plain Old C# Objects) automatically for you and will also create a class named **YourDbName**Context which is your DbContext . At that point your application will create an instance of you context each time you run your app, and you will be able to access your database using the context. EF will also keep track of any changes you make so here is how you problem would be solved: EF generates POCO: public partial class Customer { public int Id { get; set; } public string FirstName { get; set; } public string LastName
Cites Christian Wolf Alves Hess · 2015-08 · Stack Overflow · on “Entity Framework 5.0 throwing EntityException when trying to add row to SQLServer Database”
I'm making a small Entity Framework based console application where I'm trying to access an SQLServer database I have stored in my computer and Add a row to one of it's tables. Thing is when I try and run the program the db.SaveChanges(); method throws an EntityException, and even after I surround it with try/catch and the code works without any compilation errors, the data is not saved in the database and it goes into the catch code and writes the line "Didn't work" . Here's the code: using System; using System.Collections.Generic; using System.Data.Entity.Core; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleAchei { class Program { static void Main(stri
Cites MStew · 2016-07 · Stack Overflow · on “Correct way/sequence to create DbContext”
What is the correct way to generate a DbContext for my database. (I'm using database first.) If you are using database first, you will need to and ADO.NET Entity Data Model. It looks like the EF 6.x DbContext Generator option generates empty files if I don't first create an ADO.NET Entity Data Model (EDMX file). You shouldn't be running any of these commands if you are using database first: Enable-Migrations, Add-Migration, Update-Database. Your first step is to create the EDMX file. However, if I create the EDMX file first and then create the DbContext, I seem to get conflicting symbols with errors such as: Once you create your EDMX file, your DbContext will also be created within the file.