private void DataPortal_Fetch()
{
using (var ctx = ContextManager <EFDataContext> .GetManager(Database.EFramework))
{
var i = from p in ctx.DataContext.EF_BarMark
select EF_BarMarkFactory.Fetch(p);
this.RaiseListChangedEvents = false;
this.IsReadOnly = false;
this.AddRange(i);
this.IsReadOnly = true;
this.RaiseListChangedEvents = true;
}
}