what is the difference between ApplicationDbContext and DbContext

Question

i'm looking online for how to make a dynamic repository with EF and i often see that people are using ApplicationDbContext as a private object.

i'm guessing that it derived from DbContext but is there any problem with just using DbContext?

BTW i cant seem to be able to add ApplicationDbContext.. is there any using i'm missing?

public class Repository<T> : IRepository<T> where T : EntityBase
{
    private readonly ApplicationDbContext _dbContext;

    public Repository(ApplicationDbContext dbContext)
    {
        _dbContext = dbContext;
    }

    public virtual T GetById(int id)
    {
        return _dbContext.Set<T>().Find(id);
    }

    public virtual IEnumerable<T> List()
    {
        return _dbContext.Set<T>().AsEnumerable();
    }

    public virtual IEnumerable<T> List(System.Linq.Expressions.Expression<Func<T, bool>> predicate)
    {
        return _dbContext.Set<T>()
               .Where(predicate)
               .AsEnumerable();
    }

    public void Insert(T entity)
    {
        _dbContext.Set<T>().Add(entity);
        _dbContext.SaveChanges();
    }

    public void Update(T entity)
    {
        _dbContext.Entry(entity).State = EntityState.Modified;
        _dbContext.SaveChanges();
    }

    public void Delete(T entity)
    {
        _dbContext.Set<T>().Remove(entity);
        _dbContext.SaveChanges();
    }
}

You are right that it is derivded, in your case here you can use `DbContext` if you like, it's just a matter of preference. — DavidG, Oct 23 '18 at 08:32
[this](https://stackoverflow.com/q/19902756/7571171) might be of help — Thomas Flinkow, Oct 23 '18 at 08:33
thanks @DavidG , is there any pros to use ApplicationDbContext over DbContext? — calios, Oct 23 '18 at 08:56
Well you are potentially losing some compile time type safety if you only use `DbContext`. — DavidG, Oct 23 '18 at 09:47

faikzeybek · Answer 1 · 2018-10-23T09:25:25.510

1

ApplicationDbContext with scaffolding may inherits from IdentityDbContext and either two inherits from DbContext which has EntityFramework features. ApplicationDbContext may have your context in other words, it is merging your contexts and yes, you can use your own DbContext.

edited Oct 23 '18 at 09:25

answered Oct 23 '18 at 09:18

faikzeybek

11
4

scaffolding? is that a typo? – calios Oct 23 '18 at 10:49
1

No, it is kind of wizard, code generator for structure – faikzeybek Oct 23 '18 at 11:07
i see...its not realy what i was looking for... already got the answer from @DavidG, but thanks... – calios Oct 23 '18 at 11:42

what is the difference between ApplicationDbContext and DbContext

1 Answers1