Entity Framework Refresh context? [closed]

The best way to refresh entities in your context is to dispose your context and create a new one.

If you really need to refresh some entity and you are using Code First approach with DbContext class, you can use

    public static void ReloadEntity<TEntity>(        this DbContext context,         TEntity entity)        where TEntity : class    {        context.Entry(entity).Reload();    }

To reload collection navigation properties, you can use

    public static void ReloadNavigationProperty<TEntity, TElement>(        this DbContext context,         TEntity entity,         Expression<Func<TEntity, ICollection<TElement>>> navigationProperty)        where TEntity : class        where TElement : class    {        context.Entry(entity).Collection<TElement>(navigationProperty).Query();    }

Reference:https://msdn.microsoft.com/en-us/library/system.data.entity.infrastructure.dbentityentry.reload(v=vs.113).aspx#M:System.Data.Entity.Infrastructure.DbEntityEntry.Reload

yourContext.Entry(yourEntity).Reload();

If you want to reload specific entities, with the DbContextApi, RX_DID_RX already gave you the answer.

If you want to reload / refresh all the entities you loaded:

If you are using Entity Framework 4.1+ (EF5, or EF 6 probably), DbContext API:

public void RefreshAll(){     foreach (var entity in ctx.ChangeTracker.Entries())     {           entity.Reload();     }}

If you are using entityFramework 4 (ObjectContext API):

public void RefreshAll(){     // Get all objects in statemanager with entityKey     // (context.Refresh will throw an exception otherwise)     var refreshableObjects = (from entry in context.ObjectStateManager.GetObjectStateEntries(EntityState.Deleted                                               | EntityState.Modified                                               | EntityState.Unchanged)                                      where entry.EntityKey != null                                      select entry.Entity);     context.Refresh(RefreshMode.StoreWins, refreshableObjects);}

Best advice anyway is, try to use a "short lived context" and you'll avoid this kind of problems.

I wrote a couple of articles on the matter:

https://christianarg.wordpress.com/2013/06/13/entityframework-refreshall-loaded-entities-from-database/