从DbContext获取ObjectContext

Question

I have a DbContext application where I need to use ObjectContext on a certain form (data binding issue with DbContext). I tried accessing the ObjectContext entities using

var oc = ((IObjectContextAdapter)MyEntities).ObjectContext;

but entities do not show up when typing oc.Students . What shall I do to have access to entities?

Answer 1

I believe you're looking for the method CreateObjectSet<TEntity>()

In your scenario, that would be used like so

var oc = ((IObjectContextAdapter)MyEntities).ObjectContext;
var query = oc.CreateObjectSet<Student>();

You can then use LINQ to build your query much the same way you would with an IQueryable<Student>