Entity Framework Core - Knowledge Base (KB)
15 results in tag: entity
The type 'Company.Model.User' and the type 'Company.Core.Model.User' both have the same simple name of 'User' and so cannot be used in the same model
I have a base entity class ...MyCompany.Core.Model.User... which is to be used for common properties of a ...User... entity:...public class User { public string Username { get; set; } public string Usercode { get; set; } } ...I also have a base ma...
asked by Brett Postin
Source Code for Entity framework 6.0.2
Why is there no source code history for entity framework:...http://entityframework.codeplex.com/releases/view/114074...We can download and build the latest release 6.1 (alpha) which we dont want to do but we cannot download and build earlier releases 6.0....
asked by Daniel Haddon
how to insert parent child while doing entityframework.bulkinsert?
I am using Entityframework 6, I am trying to insert a parent-child kind of data in the database. I am using Entityframework.BulkInsert to insert data. I have ...autoIncrement int primary key... in all the tables...My object is as follows :... var paren...
asked by user3825003
How to use Linq to join entity tables with a cross-reference table
Let me preface this by saying I'm relatively new to Linq, but I seem to have grasped most of it pretty quickly. But this problem has me stumped. I've searched and searched to no avail....I am using code-first and have created have 2 models, "Items" and ...
asked by Jason Thuli
How to get a list of all Entity relation in Entity Framework 6.1?
I am trying to get a list of all relations "foreign keys" on a model programmatically (key, related object, foreign column name.)...I found ...this other question... which seems to be doing the same thing. But I am unable to get the code in the answer to ...
asked by Jaylen
How can I create a new instance of a class at run time using c#?
I have the following class which I pass Entity Framework Model when making an instance of it....public class TableMapper<TSource> { protected IQueryExtractor QueryExtractor { get; set; } protected string TableAliasPrefix { get; private set; } ...
asked by Jaylen
EntityFrameworkCore is there a way to create EnumToStringConverter without passing the enum type as generic?
I am trying to use ...EntityFrameworkCore... ORM to interact with my databases. By default, ...EntityFrameworkCore... seems to store enum as int instead of string. ...However, I would like to store the value in the database as a string. I can see that ...
asked by Junior
Updating an entity object with relation to another table-object (NxN) (Inserting, deleting)
Using entity for a table with NxN-relation (to another table), I can´t update the first table object (with its second table inside it) because the program show an exception message related with the second table and it says there is a record with the same...
asked by Elias MP
EF when add Entity, attach this also to mistake Entity but with same property
I have this type of entity...Company with 'n' Service and Company with 'n' Container with 'n' Service...Company(id_s) -> Service(id_s, uuid_c)...Company(id_s) -> Container(uuid_c) -> Service(id_s, uuid_c)...When I add a service, with container, to company...
asked by ricga
how to save and compare datetime values in C# and asp.net core?
I'm writing a web app using asp.net core and entity framework core; i want to set current date and time for db objects when they are created and later i need to compare them with datetimes that users specified. my app target users is local to my country. ...
asked by Dewy Eve
Map DTO to Entity
These are my ...Entities...: In this scenario, each user can make a ...Post.... Each post can have a list of ...Items... and each item can have a list of users that Tagged in it....public class Post { public int Id { get; set; } public int UserId ...
asked by Saeid Amini
EF Core and DDD: Store ValueObjects in the same table as Entities, also use parametrized constructors to set property values on Entities
Consider these simple classes. They belong to a simple application with Domain Driven Design (DDD) principles, and as such every Entity and ValueObject receives its property values through the constructor while hiding the default, parameter-less construct...
asked by TheAgent
Entity Framework Core Entity > Value Object > Entity Relationship
I have the following classes...public class Slot : Entity { public SnackPile SnackPile { get; set; } public SnackMachine SnackMachine { get; set; } public int Position { get; } protected Slot() { } public Slot(SnackMachine sn...
asked by visualbam
How can I fix "The ObjectContext instance has been disposed "
I developed an application with entity framework. I get the ...The ObjectContext instance has been disposed and can no longer be used for operations that require a connection....error from sometimes....I did some research on the internet but I couldn't ...
asked by Engin Ozsozgun
Entity Framework - error: the principal end of this association must be explicitly configured
I have a project built on the top of the ASP.NET MVC 5 framework. I am using Entity Framework 6.2 to access data from my database....I have the following two models...public class Entity<T> where T : struct { [Key] public T Id { get; set; } } pub...
asked by user12310517
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