Question

I’m a new beginner to the entity framework .

and i can’t find the following method CreateQuery()

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why i can’t find this method ?!!

Answer 1

Since ESQL was considered an advanced use case, there is no straightforward API from DbContext. You can access the ObjectContext that backs your DbContext to do what you want:

((IObjectContextAdapter)context).ObjectContext.CreateQuery<Person>("esql..")

Related: http://thedatafarm.com/blog/data-access/accessing-objectcontext-features-from-ef-4-1-dbcontext/

As suggested there, you can also add a method ( or property) ObjectContext to your context class:

public class BloggingContext : DbContext
{
    public DbSet<Blog> Blogs { get; set; }
    public DbSet<Post> Posts { get; set; }

    public ObjectContext ObjectContext()
    {
        return (this as IObjectContextAdapter).ObjectContext;
    }
}