WebJun 26, 2011 · 5. From the exception message Invalid column name 'Discriminator' I would conclude that you didn't let EF 4.1 create the database table _AUDIT because otherwise EF would have created a column called Discriminator to the table. Perhaps you have an existing database table without such a column. When EF tries to save the entity it wants to store a ... WebFeb 22, 2015 · ResponseFormat=WebMessageFormat.Json] In my controller to return …
Inheritance in Entity Framework Core
WebNov 17, 2013 · EF Code-First inherit a single base class to implement easy historocity. I am running into some errors implementing my plan as described below. I am not so interested at this point in resolving particular errors as I am in whether or not this is a good idea. All history-capable objects descend from a common class AuditableObject with a single ... WebJun 29, 2024 · Entity Framework 6 & TPH inheritance: Map properties with the same name to same column by default. 2. Inherited nav property EF Core. Related. 2. EF Core - How to create inherited entity types that contain foreign key columns. 1. Linq, EF Core - group by on one field and use other field to get list of data from other table. 0. pho boat
Inheritance in Entity Framework Core Learn Entity
WebJul 19, 2014 · entity-framework; inheritance.net-4.0; ef-code-first; Share. Improve this question. Follow asked Jul 19, 2014 at 9:42. Masoud Masoud. 8,020 11 11 gold badges 59 59 silver badges 119 119 bronze badges. Add a comment 1 Answer Sorted by: Reset to default 3 This is a confirmed bug in the Entity Framework 5. ... WebOct 17, 2011 · 1. I have the following database schema: I'm using Table-per-Hiearchy (TPH) inheritance. The "Type" field of Cases table determines if a case is an email case or a twitter case. Both of them is an 1:N relation to Cases table. I'm using database first approach with EF, and this is the model I want to use: The problem is that I cannot map ... WebMay 23, 2024 · The EF inheritance does not support this scenario. The best way to create a Student for an existing Person is to use a stored procedure. Please note that this is not a stored procedure that is wired up to the Student entity through mappings, but a separate one that can be called explicitly from code. pho bo 219 d tham