ef-database-first

问题 Below are my 2 class sharing 1 to many relationship : public partial class Employee { public int Id { get; set; } public string Name { get; set; } public virtual ICollection<Skills> Skills { get; set; } } public partial class Skills { public int Id { get; set; } public Nullable<int> EmployeeId { get; set; } public string Skills { get; set; } public virtual Employee Employee { get; set; } } Now I am trying to remove employees with its corresponding skills in following way : 1) Deleting both

问题 I'm using EF5 with a Database-First model. And a database project in visual Visual Studio to maintain the Sql Server database schema of an application. To update the EF model, I'm deploying the changes in a empty database... Is it possible to generate and update a EF model from a Visual Studio (2012) database project? UPDATE: Also generate it from a dacpac file is a not too bad option. Is it possible? UPDATE: In the MS Build 2014 Conference, the ADO.NET team suggested that the future releases

问题 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 model. Adding a column to a table is reflected, but not adding a field to a stored procedure. It is interesting that if I go to the Model Browser , right click the stored procedure, select Add Function Import and click the button Get Column Information we

问题 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 model. Adding a column to a table is reflected, but not adding a field to a stored procedure. It is interesting that if I go to the Model Browser , right click the stored procedure, select Add Function Import and click the button Get Column Information we

问题 Assumptions Using EF 6.1, MVC 5, VS 2013, C# I have an existing database model designed in Toad DM for SQL Server and it's very important keep it always updated Steps and Notes Using ADO.NET Entity Data Model I chose Code First from Database ( new feature in EF 6.1 ) to generate the models. Note: Model classes and DbContext class generated successfuly but NO .edmx or .tt file was generated . Next I added a new scaffold item: MVC 5 Controllers with views, using Entity Framework. Note: Success,

问题 I need to create a Web API C# application for an existing MySQL database. I've managed to use Entity Framework 6 to bind every database table to a RESTful API (that allows CRUD operations) . I want to implement a login/registration system (so that I can implement roles and permissions in the future, and restrict certain API requests) . The MySQL database I have to use has a table for users (called user ) that has the following self-explanatory columns: id email username password_hash It seems

问题 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 'System.Data' (are you missing an assembly reference?) I understand that this is because the namespace has changed and i can manually fix the error by changing my imports from: using System.Data.Objects; and using System.Data.Objects.DataClasses; To:

问题 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. Code First approach. But I already have a database in place and I need to use it to build a Web API . Various business logic are already written as Stored Procedures and Views and I have to consume those from my Web API. Question 1: Is this at all possible to carry

问题 I can use MS SQL in MVC application, but now I want to create MVC Database First application with MySQL (MVC 4, VS 2012, MySQL 5.5). I can connect to MySQL in Server Explorer window. When I create new ADO.NET Entity Data Model , there is not MySQL in data sources list. How can I create my first application with MySQL? 来源： https://stackoverflow.com/questions/12997652/how-to-create-mvc-database-first-application-with-mysql

问题 I have little experience with Database First Models and how to approach these with MVC View Models. It is clear I cannot change the original model but I would like to add some annotations to the model for validation purposes. Therefore what I tried to do was create a ViewModel which inherits from the entity My DB First generated model - do not amend public partial class xmldata { public string ISBN { get; set; } public string title { get; set; } public string blurb { get; set; } ... } I then