Entity Framework Core - Knowledge Base (KB)
43 results in tag: ef-database-first
Entity framework nesting complex types
I have a stored procedure that returns multiple result sets. Each one is a complex type. The first result set would contain a list of items of the same complex type as the second result set, etc. These do not cleanly correlate to specific entities. Fo...
asked by ChristyPiffat
EF 6 database first: How to update stored procedures?
We are using ...Entity Framework 6.0.0... and use database first ...(like this)... to generate code from tables and stored procedures. This seems to work great, except that changes in stored procedures are not reflected when updating or refreshing the mo...
asked by Halvard
MVC 4 and EF6 database first: issue with mapping
I am following along Pro ASP.NET MVC 4 by Adam Freeman on VS 2010 (I downloaded the MVC 4 template online). I have worked with the .edmx file before, but in Chapter 7 he does not do this. I setup a basic connection string with SQL Server in my web.config ...
asked by jmzagorski
Upgrade from Entity Framework 5 to 6
After upgrading our project from using Entity Framework 5 to Entity Framework 6 (though NuGets update function) i get the following error on my generated Entities class:...Error 1 The type or namespace name 'Objects' does not exist in the namespace 'Sy...
asked by RossBille
Entity Framework 6 database first many to many relationship
I am trying EF6 and trying to utilize a many to many relationship....Using Database first here is my scripted out database....CREATE TABLE [States] ( Id int identity (1, 1) not null primary key, Name varchar(50) not null, Abbreviation varchar(...
asked by EvilToaster101
Change entity framework database first auto generated domain classes
Can i change entity framework database first auto generated classes (under .tt) to derive from a base class (BaseEntity)?...Some of my domain classes has two property (CreateDateTime & CreateUserId) and i want to set this properties automatically before S...
asked by Mohammad Zare
Entity Framework 6 Model-First - Update Production Database Based On Local Changes
I'm new to EF and inherited a project that apparently used database-first development....The production environment uses SQL Azure and I'm basically trying to figure out the standard approach for updating its schema. ...At first, I tried enabling migratio...
asked by Colin
How to update record using Entity Framework 6?
I am trying to update record using EF6. First finding the record, if exists, update it. Here is my code:-...var book = new Model.Book { BookNumber = _book.BookNumber, BookName = _book.BookName, BookTitle = _book.BookTitle, }; using (var db =...
asked by user1327064
Complex type inside Database-first model of a DDD project
Let’s say in my EF6 project [Database-first approach] I have a complex type called ...Address... [just to clarify my complex type does not have any identity and is only a merge of aggregation of standalone data and it is not even responsible for its own...
asked by MHOOS
Entity Framework 6.1 : The given key was not present in the dictionary
I have a table with some relations, the program works fine until I add a new relation between this table and ...customer... table, the ddl for ...PermissionCode... Table (first table) is as below:...CREATE TABLE [dbo].[PermissionCode] ( [Id] int NOT NULL ...
asked by Mesut Talebi2
Generate Enum from Lookup Tables - EF 6
This might sound repeated but I have gone through all the available posts but could not figure out the best method in EF 6 version....I have two tables...PersonPhone (PersonID, PhoneTypeID) PhoneType(PhoneTypeID, Description) ...PhoneTypes as just look u...
asked by techspider
Entity Framework - DB-First - Composite Foreign Keys
I have a database that has a table with a 2-column primary composite key (one int, one bigint.) I have two tables that have a composite foreign key, referencing the first table's composite primary key. The relationships are (as far as I know,) fine and ...
asked by Bryan Morgan
Migrate database-first to code-first - switch from publish to migrations
We need to migrate an existing project from database-first to code-first. Each environment (DEV, TEST, PROD) has a slightly different version of the database. The differences are the changes in DEV that may not have been pushed to TEST and PROD....--...
asked by Don Chambers
EntityFramework refuses to forget old columns
I'm using EntityFramework 6.1.3, database-first. I am currently wishing I had chosen code-first......I have a database with some tables. I've previously built my edmx off of these tables. Then I changed the type of a few columns and added a few columns. ...
asked by Nacht - Reinstate Monica
How can I call a SQL Stored Procedure using EntityFramework 7 and Asp.Net 5
For last couple of days I am searching for some tutorials about how to call a ...Stored Procedure... from inside a ...Web API... controller method using ...EntityFramework 7.......All tutorials I came through are showing it the other way round, i.e. ...Co...
asked by Subrata Sarkar
Entity Framework Database first multiple schemas duplicate table names
I'm working with an existing database that has multiple schemas. In addition, different schemas duplicatate table names. Code First deployment is not an option....When generating my edmx, I'm hitting multiple issues, but the main one I'm concerned about...
asked by Allen Jergensen
Multiple EF6 DB Models with same Entity names conflicting and getting overwritten, How to set model output directory in EF6?
I am working with ...EF6... and generating models (database-first) from multiple databases. Some databases have same table names so when model is generated they start conflicting. To solve ...namespace... problem I went to ...Model.tt... file properties i...
asked by Matas Vaitkevicius
Error when scaffolding using Entity Framework Core in ASP.Net core
I am trying to create models using an existing SQL Server 2016 database. When the run the command prompt as shown in the documentation:...PM> Scaffold-DbContext "'Server=techestatevm.southeastasia.cloudapp.azure.com;Database=Blogging;User Id=newuser;Passw...
asked by Vinod
Entity Framework Core retrieve single object from table
I am trying to retrieve a single row from my table using Entity Framework core. This seems to be very simple, but i cannot get it to work....I am able to get the list by using ..._context.COUNTRY.ToList();...This gives me the full list of countries in my ...
asked by Vinod
How to add Data Validation in EF Core with Database First approach?
I am implementing a MVC-Webapplication with ASP.NET Core (RC2) and as ORM Entity Framework Core. Since I already got a database design, I have to create the entity models by the Scaffold-DBContext command....This works fine. Now, I want to add some annota...
asked by user1885888
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