entity-framework-6

We are working with a rather large model in a EF 6.1 code first setup and we are using ints for entity ids. Unfortunately, this is not as typesafe as we would like, since one can easily mix up ids, for example comparing ids of entities of different types (myblog.Id == somePost.Id) or similar. Or even worse: myBlog.Id++. Therefore, I came up with the idea of using typed ids, so you cannot mix up ids. So we need a BlogId type for our blog entity. Now, the obvious choice would be to use an int wrapped in a struct, but you cannot use structs as keys. And you cannot extend int... - wait, you can!

For example, let say I have 4 different entity that each implement a Add() method that add the entity to the database : public class Profile { ... public void Add() { this._dbContext.Profile.Add(this); this._dbContext.SaveChanges(); } ... } Now I would like to have a generic class that implement this kind of behavior in one abstract class instead of X number of classes. So I tried the following : public abstract class Entity<TEntity> where TEntity : class { protected DbContext _dbContext; protected Entity() { this._dbContext = new SMTDBContext(); } public void Add() { this._dbContext.Set

Background I'm writing an application which finds events within a certain radius of a zip code. You can think of this like ticketmaster, where you type in your zip code and all of the concerts in the radius of x show up. I have a database table which has the zip code, and each zip codes' Latitude and Longitude. I also have an 'EventListings' table where each 'Event' has a ZipCode field. Problem Currently, I'm using the Haversine formula in a Linq-to-Entities query in my service layer to find which events are within the radius. Right now, I'm using it as a filter in the where clause. I'd also

Is there any possible configuration to set database column ordering in entity framework code first approach..? All of my entity set should have some common fields for keeping recordinfo public DateTime CreatedAt { get; set; } public int CreatedBy { get; set; } public DateTime ModifiedAt { get; set; } public int ModifiedBy { get; set; } public bool IsDeleted { get; set; } I want to keep this fields at the end of the table. Is there any possible EF configuration that i can use to config this rather than keeping this fields at the end of my model class. I'm assuming you are using Entity Framework

Just starting testing EF6 and its Async functions. Boy was I surprised when I realized that they are not thread safe. I kinda assumed that that was the point. I had my own Task based extension methods for years already, but what I was waiting for from EF was to make them thread safe. At least my Task based functions lock ed as to not interfere with each other. EF6 doesn't even go that far. But the main problem is something that my code shares with theirs. i.e. Try issuing an async query and then before it completes try accessing a navigation property (on a pre-loaded totally separate entity in

I trying to update nested collection (Cities) of Country entity. Just simple enitities and dto's: // EF Models public class Country { public int Id { get; set; } public string Name { get; set; } public virtual ICollection<City> Cities { get; set; } } public class City { public int Id { get; set; } public string Name { get; set; } public int CountryId { get; set; } public int? Population { get; set; } public virtual Country Country { get; set; } } // DTo's public class CountryData : IDTO { public int Id { get; set; } public string Name { get; set; } public virtual ICollection<CityData> Cities {